CN113287689A - Selenium-rich chicken feed additive and application thereof - Google Patents

Selenium-rich chicken feed additive and application thereof Download PDF

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Publication number
CN113287689A
CN113287689A CN202110343629.6A CN202110343629A CN113287689A CN 113287689 A CN113287689 A CN 113287689A CN 202110343629 A CN202110343629 A CN 202110343629A CN 113287689 A CN113287689 A CN 113287689A
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selenium
crushing
barrel
drying
fulvic acid
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Inventor
朱永毅
张金尧
杨均
李潇蒙
刘军泽
潘成文
宋志雪
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/70—Feeding-stuffs specially adapted for particular animals for birds
    • A23K50/75—Feeding-stuffs specially adapted for particular animals for birds for poultry
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
    • A01K67/02—Breeding vertebrates
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/105—Aliphatic or alicyclic compounds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/174—Vitamins
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/30—Oligoelements
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/24—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/50—Ducting arrangements from the source of air or other gases to the materials or objects being dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C2018/162—Shape or inner surface of shredder-housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165—Screen denying egress of oversize material

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Zoology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Animal Husbandry (AREA)
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  • Biotechnology (AREA)
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Abstract

本发明公开了一种富硒鸡饲料添加剂及其应用，所述富硒鸡饲料添加剂包括富里酸硒干粉料、生化富里酸、维生素E和维生素B，所述富里酸硒干粉料、生化富里酸、维生素E和维生素B的质量比为1:20～25:1:12～15，所述富里酸硒干粉料使用富里酸溶液与亚硒酸钠络合反应制得。将该富硒鸡饲料添加剂按照质量比为1:2000的比例加入绿壳蛋鸡饲料中，对绿壳蛋鸡进行饲喂，饲喂7天后的绿壳蛋鸡生产出来的富硒绿壳鸡蛋的硒含量为0.2mg/kg‑0.5mg/kg，符合“蛋类及制品”富硒食品要求，且不含无机硒、无机砷、铅、镉、总汞，同时可提高绿壳蛋鸡的蛋品质、产蛋率和绿壳蛋率。

Figure 202110343629

The invention discloses a selenium-enriched chicken feed additive and an application thereof. The selenium-enriched chicken feed additive comprises selenium fulvic acid dry powder, biochemical fulvic acid, vitamin E and vitamin B, the selenium fulvic acid dry powder, biochemical fulvic acid The mass ratio of vitamin E and vitamin B is 1:20-25:1:12-15, and the selenium fulvic acid dry powder is prepared by complex reaction of fulvic acid solution and sodium selenite. The selenium-enriched chicken feed additive was added to the green-shelled laying hen feed at a mass ratio of 1:2000, and the green-shelled laying hens were fed, and the selenium-enriched green-shelled eggs produced by the green-shelled laying hens were fed for 7 days. The selenium content is 0.2mg/kg‑0.5mg/kg, which meets the requirements of "eggs and products" selenium-enriched food, and does not contain inorganic selenium, inorganic arsenic, lead, cadmium, and total mercury. Egg quality, egg production and green shell egg rate.

Figure 202110343629

Description

Selenium-rich chicken feed additive and application thereof
Technical Field
The invention relates to the technical field of agriculture, in particular to a selenium-rich chicken feed additive and application thereof.
Background
In our country 72% of the population belong to areas with selenium deficiency or low selenium, 2/3 has different degrees of selenium intake deficiency. The selenium deficiency of human body is caused by natural environment and environmental pollution, and due to industrial pollution, acid rain and other reasons, a large amount of sulfur dioxide reacts with selenium compounds to form elemental selenium which is not beneficial to plant absorption, thus aggravating the selenium deficiency condition of human body; selenium is an essential micronutrient for humans and animals. A large amount of data at home and abroad show that the selenium deficiency in the environment seriously affects the health of people and animals.
The human body has the absorption rate of organic selenium in eggs as high as 80 percent, and selenium-enriched eggs are the best selenium nutritional supplement known at present. At present, the method for producing selenium-rich eggs at home and abroad is to feed laying hens with high-selenium feed for production, and the selenium sources for producing the selenium-rich eggs by adding the selenium-rich eggs into daily ration exist in 2 types, namely organic selenium and inorganic selenium, wherein the organic selenium mainly comprises selenate polysaccharide, selenium amino acid and selenium yeast, the inorganic selenium mainly comprises sodium selenite, sodium selenate and sodium selenide, and the application effects of the organic selenium and the inorganic selenium are greatly different. The inorganic selenium and selenium source is rich, the price is lower, the cost is more economic, but the application effect is not as good as that of organic selenium.
In addition, when the high-selenium feed additive is prepared in the prior art, the fulvic acid selenium solution has high viscosity in the concentration and drying processes, so that the concentration and drying are difficult, the cost is high, multiple sets of equipment are required to perform operations such as drying and crushing respectively, and the preparation process is time-consuming.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a preparation method and application of a selenium-rich chicken feed additive.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a selenium-rich chicken feed additive is characterized in that: the vitamin E-vitamin B-fulvic acid dry powder comprises a fulvic acid selenium dry powder material, biochemical fulvic acid, vitamin E and vitamin B, wherein the mass ratio of the fulvic acid selenium dry powder material to the biochemical fulvic acid to the vitamin E to the vitamin B is 1: 20-25: 1: 12-15.
Further, the mass ratio of the selenium fulvate dry powder to the biochemical fulvic acid to the vitamin E to the vitamin B is 1:23:1: 12.
Further, the preparation of the selenium fulvate dry powder comprises the following steps,
s1: carrying out a complex reaction on the fulvic acid solution and sodium selenite to prepare a fulvic acid selenium solution;
s2: adding corn flour into the selenium-fulvic acid solution, and mixing to obtain a selenium-fulvic acid wet material;
s3: and drying, crushing and screening the selenium-fulvic acid wet material to obtain a selenium-fulvic acid dry powder material.
Further, in the step S1, the mass ratio of the fulvic acid solution to the sodium selenite is 300-150: 1; the temperature of the complexation reaction is 50-80 ℃, and the complexation time is 4-8 hours.
Further, in the step S2, the mass ratio of the selenium fulvate solution to the corn flour is 1: 40-60.
Further, in the step S3, drying, crushing and screening the selenium fulvate wet material by using a drying, crushing and screening integrated machine; the drying, crushing and screening all-in-one machine comprises a plurality of first supports and second supports, a drying barrel is arranged on each first support, the bottom surface of each drying barrel is of an inclined structure, a discharge hole is formed in one side surface, close to the bottom of the inclined structure, of each drying barrel, the discharge hole is located at the bottom of the corresponding side surface, and a barrel cover is movably connected to the top of each drying barrel;
a crushing and screening barrel is rotatably arranged in the drying barrel, is of a horizontal cylindrical shape and is of a screen mesh structure; the crushing and screening barrel is an eccentric barrel, a feeding hole is formed in the top of the crushing and screening barrel, and a sealing cover is movably connected to the feeding hole;
a rotating shaft penetrates through the crushing and screening barrel, the rotating shaft is fixedly connected with the left side wall and the right side wall of the crushing and screening barrel, one end of the rotating shaft is rotatably connected with the left side inner wall of the drying barrel, and the other end of the rotating shaft penetrates through the right side wall of the drying barrel and is fixedly connected with an output shaft of a driving motor arranged on the second support;
one end of the rotating shaft, which is close to the left side wall of the drying barrel, is fixedly provided with an eccentric wheel, the right side surface of the eccentric wheel is fixedly connected with the crushing and screening barrel through a connecting barrel, and the connecting barrel is also of a screen mesh structure;
a crushing shaft is sleeved outside the part, located in the crushing and screening barrel, of the rotating shaft, is of a hollow structure, a driving assembly is arranged inside the crushing shaft, the driving assembly is located outside the rotating shaft, the driving assembly drives the crushing shaft and the rotating shaft to rotate in opposite directions, and a plurality of crushing blades are fixedly arranged on the periphery of the crushing shaft;
one side of the drying barrel is provided with an air heater, a hollow cavity is arranged on the barrel wall of the drying barrel, the air heater is communicated with the hollow cavity through a hot air pipeline, a plurality of air outlet pipes are uniformly distributed on the inner side wall of the drying barrel, one end of each air outlet pipe is communicated with the hollow cavity, and the other end of each air outlet pipe is provided with a nozzle; the barrel cover is provided with an air outlet; and the air outlet is provided with an active carbon filter layer and an adsorption layer.
Furthermore, the driving assembly comprises a square block sleeved outside the rotating shaft, a transverse through hole is formed in the square block, and the rotating shaft is located in the through hole and is rotatably connected with the square block through a bearing; two mounting rods are fixedly arranged on the right side of the square block, the two mounting rods are symmetrically arranged on the upper side and the lower side of the rotating shaft, a first gear is rotatably arranged at the end part of each mounting rod, a second gear is fixedly arranged on the rotating shaft, the two first gears are both meshed with the second gear, a connecting rod is fixedly arranged on the right side surface of each second gear, one end of each connecting rod is fixedly connected with the right side surface of the corresponding first gear, and the other end of each connecting rod is fixedly connected with the inner side surface of the crushing shaft;
the left and right sides face of the crushing shaft is provided with through holes matched with the rotating shaft, and sliding grooves are formed in the positions of the rotating shaft corresponding to the left and right sides of the crushing shaft.
Furthermore, a third gear is fixedly installed at a position, close to the right side wall of the drying barrel, of the rotating shaft, the third gear is located in the drying barrel, a fourth gear is further installed on the right side wall of the drying barrel, the fourth gear is located right below the third gear, and the third gear is connected with the fourth gear through a chain; the left side fixed mounting of fourth gear has the stirring shaft, the right-hand member of stirring shaft with the left side fixed connection of fourth gear, the left end of stirring shaft with the left side wall of drying barrel rotates to be connected, the bottom parallel of stirring shaft has set firmly many stirring rods, and is many the length of stirring rod is along the incline direction of drying barrel bottom surface increases gradually, every the bottom of stirring rod all is equipped with curved doctor-bar.
Further, an application of the selenium-rich chicken feed additive is characterized in that: the feed is added into the feed for the green-shell laying hens according to the mass ratio of 1:2000, and the green-shell laying hens are fed.
Furthermore, selenium content of selenium-rich green shell eggs produced by green shell laying hens fed for 7 days is 0.2mg/kg-0.5 mg/kg.
The invention has the beneficial effects that:
1. the selenium-rich chicken feed additive is a dry powder agent, and is very convenient for feed manufacturers and livestock production.
2. The preparation method of the dry powder of the selenium fulvate overcomes the problems of high viscosity, difficulty in concentration and drying and high cost of the selenium fulvate solution in the concentration and drying processes, and is a method with low cost and easy control.
3. The selenium-rich chicken feed additive is added into green-shell layer chicken feed, the green-shell layer chicken is fed, after 7 days of feeding, selenium-rich eggs produced by the green-shell layer chicken are inspected in different batches, the selenium content meets the standard of 0.2mg/kg-0.5mg/kg, and inorganic selenium is not detected.
4. The selenium-rich chicken feed additive is added into green-shell layer chicken feed, the green-shell layer chicken is fed, and after 7 days of feeding, inorganic arsenic, lead, cadmium and total mercury are not detected in selenium-rich eggs produced by the green-shell layer chicken after different batches of inspection.
4. The drying, crushing and screening integrated machine can simultaneously crush, screen and dry the selenium-rich-acid wet material, and the crushing and screening barrel adopting the eccentric wheel and eccentric barrel structure can increase the centrifugal force of the rotation of the crushing and screening barrel, so that the material in the crushing and screening barrel rotates in the crushing and screening barrel; the rotating direction of the crushing shaft is opposite to that of the rotating shaft, so that materials in the rotating process are cut by the crushing blades rotating in the opposite direction, the crushing effect is better, the crushed materials fall into the drying barrel through the crushing and screening barrel with the screen structure to be dried in the rotating process, and the phenomenon that the crushing, screening and drying in the prior art are operated by different devices independently is avoided, so that time and labor are consumed; the bottom of the drying barrel adopts an inclined plane structure, dried materials after being dried can be automatically discharged from a discharge hole at the bottom to be collected, and the operation is convenient.
5. The drying, crushing and screening integrated machine only adopts one driving motor, and simultaneously realizes synchronous rotation of the rotating shaft, the crushing shaft and the stirring shaft, the rotating shaft and the crushing shaft rotate reversely, and the stirring shaft and the rotating shaft rotate in the same direction, so that the energy consumption is greatly saved, and the cost of the device is also reduced.
Drawings
FIG. 1 is a schematic structural diagram of a drying, crushing and screening integrated machine according to the invention;
FIG. 2 is a schematic view of the connection relationship between the rotating shaft and the crushing shaft of the drying, crushing and screening integrated machine of the invention;
FIG. 3 is a schematic view of the structure inside a drying barrel of the drying, crushing and screening integrated machine of the invention;
FIG. 4 is a side view of the structure of the stirring shaft, the stirring rod and the scraping sheet of the drying, crushing and screening all-in-one machine of the invention;
FIG. 5 is a top view of a crushing and screening barrel structure of the drying, crushing and screening all-in-one machine of the invention;
FIG. 6 shows the results of detection of medium-length eggs (4.22A) with straight green shell according to an embodiment of the present invention;
FIG. 7 shows the detection results of medium-length eggs (4.22B) with straight green shells according to an embodiment of the present invention;
FIG. 8 shows the results of detection of medium-length eggs (4.22C) with straight green shell according to one embodiment of the present invention;
FIG. 9 shows the results of detection of Changshun green shell eggs (5.15A) in example II of the present invention;
FIG. 10 shows the results of detection of Changshun green shell eggs (5.15B) according to example two of the present invention;
FIG. 11 shows the results of detection of Alternaria sinensis (5.15C) eggs;
FIG. 12 shows the test results of eggs laid on green shell produced in the third embodiment of the present invention on day 31/7/2020;
FIG. 13 shows the test results of a first group of eggs laid on green shell day 23/7/2020 in the third embodiment of the present invention;
FIG. 14 shows the test results of a second group of eggs laid on day 7, 23 of 2020 in the third example of the present invention.
Wherein, 1-a first bracket, 2-a second bracket, 3-a drying barrel, 4-a discharge port, 5-a barrel cover, 6-a crushing and screening barrel, 7-a rotating shaft, 8-a driving motor, 9-an eccentric wheel, 10-a connecting barrel, 11-a crushing shaft, 12-a crushing blade, 13-a sealing cover, 14-a hot air blower, 15-a hollow chamber, 16-a hot air pipeline, 17-an air outlet pipe, 18-a nozzle, 19-a square block, 20-a through hole, 21-a bearing, 22-a mounting rod, 23-a first gear, 24-a second gear, 25-a connecting rod, 26-a sliding groove, 27-an active carbon filtering layer, 28-an adsorption layer, 29-a third gear, 30-a fourth gear and 31-a chain, 32-stirring shaft, 33-stirring rod, 34-scraping blade, 35-air outlet,
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
The first embodiment is as follows:
a selenium-rich chicken feed additive comprises a fulvic acid selenium dry powder material, biochemical fulvic acid, vitamin E and vitamin B, wherein the mass ratio of the fulvic acid selenium dry powder material to the biochemical fulvic acid to the vitamin E to the vitamin B is 1:23:1: 12.
Further, the preparation of the selenium fulvate dry powder comprises the following steps,
s1: carrying out a complex reaction on the fulvic acid solution and sodium selenite to prepare a fulvic acid selenium solution;
specifically, the mass ratio of the fulvic acid solution to the sodium selenite is 200: 1; the temperature of the complexation reaction is 65 ℃, and the complexation time is 6 hours.
S2: adding corn flour into the selenium-fulvic acid solution, and mixing to obtain a selenium-fulvic acid wet material; the liquid-solid ratio of the selenium fulvate solution to the corn flour is 1: 50.
s3: and drying, crushing and screening the selenium-fulvic acid wet material to obtain a selenium-fulvic acid dry powder material.
Specifically, in the operation step, a drying, crushing and screening integrated machine is used for drying, crushing and screening the selenium fulvate wet material; the structure of the drying, crushing and screening all-in-one machine is shown in the attached figures 1-5, in particular, the drying, crushing and screening all-in-one machine comprises a plurality of first brackets 1 and second brackets 2, the first bracket 1 is provided with a drying barrel 3, the bottom surface of the drying barrel 3 inclines downwards from left to right, a discharge hole 4 is arranged on one side surface of the drying barrel 3 close to the bottom of the inclined structure, namely the right side surface of the drying barrel 3, the discharge port 4 is positioned at the bottom of the right side surface of the drying barrel 3, the materials in the drying barrel 3 can automatically slide down along the bottom surface of the drying barrel 3 in detail and are discharged from the discharge port 4, before the materials in the drying barrel 3 are dried, the discharge port 4 can be blocked by a blocking block (not shown in the figure), and after the materials in the drying barrel 3 are completely dried, the blocking block is opened, so that the dried materials can be automatically discharged; the top of the drying barrel 3 is movably connected with a barrel cover 5, one side of the barrel cover 5 is hinged to the top of the drying barrel 3, the other side of the barrel cover 5 is connected with the top of the drying barrel 3 in a buckling mode, the buckling connection adopts an existing male and female buckling structure, the top of the drying barrel 3 can be sealed by the barrel cover 5, and materials are prevented from overflowing from the top of the drying barrel 3 in the crushing, screening and drying processes.
Furthermore, a crushing and screening barrel 6 is arranged in the drying barrel 3 in a rotating mode, the crushing and screening barrel 6 is in a horizontal cylindrical shape, the crushing and screening barrel 6 is in a screen structure, and the size of the screen meshes of the crushing and screening barrel 6 can be selected according to actual needs to meet the material crushing particle size. The crushing and screening barrel 6 is an eccentric barrel, a feeding hole is formed in the top of the crushing and screening barrel 6, a sealing cover 13 is movably connected to the feeding hole, one side of the sealing cover 13 is hinged to the top of the crushing and screening barrel 6, the other side of the sealing cover 13 is connected with the top of the crushing and screening barrel 6 through a buckle, the barrel cover 5 is opened, then the sealing cover 13 is opened, materials can be filled into the crushing and screening barrel 6 from the feeding hole, the sealing cover 13 and the barrel cover 5 are closed, the materials are crushed and screened in the crushing and screening barrel 6, and the materials meeting the particle size requirement can fall into the drying barrel 3 in the crushing and screening barrel 6.
A rotating shaft 7 penetrates through the crushing and screening barrel 6, the position of the rotating shaft 7, which penetrates through the left and right side walls of the crushing and screening barrel 6, is welded and fixed with the left side wall or the right side wall corresponding to the crushing and screening barrel 6, one end of the rotating shaft 7 is rotatably connected with the left side inner wall of the drying barrel 3 through a bearing, and the other end of the rotating shaft 7 penetrates through the right side wall of the drying barrel 3 and is fixedly connected with an output shaft of a driving motor 8 installed on the second bracket 2; an eccentric wheel 9 is fixedly installed at one end, close to the left side wall of the drying barrel 3, of the rotating shaft 7, the right side face of the eccentric wheel 9 is fixedly connected with the crushing and screening barrel 6 through a connecting barrel 10, and the connecting barrel 10 is also of a screen mesh structure; driving motor 8 rotates, it rotates to drive pivot 7, pivot 7 pivoted in-process drives eccentric wheel 9 and the synchronous equidirectional eccentric rotation of broken screening bucket 6, it can play the effect of further strengthening stable broken screening bucket 6 eccentric rotation to connect bucket 10, the broken screening bucket 6 that adopts eccentric wheel 9 and eccentric bucket structure can make the material produce great centrifugal force in broken screening bucket 6, thereby make the material rotate fast in broken screening bucket 6, play better screening effect.
Furthermore, a crushing shaft 11 is sleeved outside the part of the rotating shaft 7, which is located in the crushing and screening barrel 6, the crushing shaft 11 is of a hollow structure, a driving assembly is arranged inside the crushing shaft 11, the driving assembly is located outside the rotating shaft 7, the driving assembly drives the crushing shaft 11 and the rotating shaft 7 to rotate in opposite directions, and a plurality of crushing blades 12 are fixedly arranged on the periphery of the crushing shaft 11; the material in the crushing and screening bucket 6 is along the in-process with crushing and screening bucket 6 and pivot 7 syntropy pivoted, and crushing shaft 11 antiport drives crushing blade 12 and material antiport, can play better cutting action to the material of rotation in-process to improve the efficiency of crushing and screening.
Specifically, the driving assembly comprises a square block 19 sleeved outside the rotating shaft 7, a transverse through hole 20 is formed in the square block 19, and the rotating shaft 7 is located in the through hole 20 and is rotatably connected with the square block 19 through a bearing 21; the bearing 21 can support the square block 19, and prevent the square block 19 from directly contacting with the rotating shaft 7, and the rotation of the rotating shaft 7 is influenced by the gravity action of the square block 19. Two mounting rods 22 are fixedly arranged on the right side of the square block 19, the two mounting rods 22 are symmetrically arranged on the upper side and the lower side of the rotating shaft 7, a first gear 23 is rotatably arranged at the end part of each mounting rod 22, a second gear 24 is fixedly arranged on the rotating shaft 7, the two first gears 23 are both meshed with the second gear 24, a connecting rod 25 is fixedly arranged on the right side surface of each second gear 24, one end of each connecting rod 25 is fixedly connected with the right side surface of the corresponding first gear 23, and the other end of each connecting rod 25 is fixedly connected with the inner side surface of the crushing shaft 11; the left side surface and the right side surface of the crushing shaft 11 are provided with through holes matched with the rotating shaft 7, and sliding grooves 26 are formed in the positions, corresponding to the left side surface and the right side surface of the rotating shaft 7 and the crushing shaft 11. In the rotating process of the rotating shaft 7, the second gear 24 is driven to rotate in the same direction as the rotating shaft, the two first gears 23 meshed with the second gear 24 rotate in opposite directions, so that the two connecting rods 25 and the rotating shaft 7 are driven to rotate in opposite directions, the connecting rods 25 drive the crushing shaft 11 and the rotating shaft 7 to rotate in opposite directions in the rotating process, and the sliding groove 26 in the rotating shaft 7 can ensure that the crushing shaft 11 always rotates in the direction opposite to that of the rotating shaft 7 and cannot move in the axial direction of the rotating shaft 7.
Further, an air heater 14 is arranged on one side of the drying barrel 3, a hollow cavity 15 is arranged on the barrel wall of the drying barrel 3, the air heater 14 is communicated with the hollow cavity 15 through a hot air pipeline 16, a plurality of air outlet pipes 17 are uniformly distributed on the inner side wall of the drying barrel 3, one ends of the air outlet pipes 17 are communicated with the hollow cavity 15, and a nozzle 18 is arranged at the other end of each air outlet pipe 17; hot air generated by the hot air blower 14 enters the hollow cavity 15 of the wall of the drying barrel 3 through the hot air pipeline 16, and then is sprayed into the drying barrel 3 through the plurality of air outlet pipes 17 and the nozzles 18 to dry the materials in the drying barrel 3; an air outlet 35 is formed in the barrel cover 5, and an activated carbon filter layer 27 and an adsorption layer 28 are arranged at the air outlet 18; the moisture and the gas with peculiar smell generated in the drying process are discharged from the air outlet 35, and are purified by the activated carbon filter layer 27 and the adsorption layer 28 in the discharging process, so that the pollution to the surrounding environment is avoided.
Further, in order to improve the drying efficiency, a third gear 29 is fixedly mounted at a position of the rotating shaft 7 close to the right side wall of the drying tub 3, the third gear 29 is located in the drying tub 3, a fourth gear 30 is further mounted on the right side wall of the drying tub 3, the fourth gear 30 is located right below the third gear 29, and the third gear 29 is connected with the fourth gear 30 through a chain 31; the left side face of the fourth gear 30 is fixedly provided with a stirring shaft 32, the right end of the stirring shaft 32 is fixedly connected with the left side face of the fourth gear 30, the left end of the stirring shaft 32 is rotatably connected with the left side wall of the drying barrel 3 through a bearing, a plurality of stirring rods 33 are fixedly arranged at the bottom of the stirring shaft 32 in parallel, the length of each stirring rod 33 is gradually increased along the inclination direction of the bottom face of the drying barrel 3, each stirring rod 33 is provided with an arc-shaped scraping blade 34 at the bottom, the scraping blade 34 is contacted with the bottom of the drying barrel 3 when rotating to the lowest position, the material at the bottom of the drying barrel 3 can be lifted, then the material is scattered along with the rotation of the scraping blade 34, and the contact area between the material and hot air can be increased in the scattering process, so that the drying efficiency is improved.
When the drying, crushing and screening integrated machine is used, the barrel cover 5 is opened, then the sealing cover 13 is opened, materials to be dried, crushed and screened are loaded into the crushing and screening barrel 6 from the feeding hole, and the sealing cover 13 and the barrel cover 5 are closed; the driving motor 8 is started, the driving motor 8 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the eccentric wheel 9 and the crushing and screening barrel 6 to synchronously rotate eccentrically in the same direction in the rotating process, and simultaneously, under the matching action of the first gear 23 and the second gear 24, the crushing shaft 11 and the rotating shaft 7 are driven to rotate in the opposite direction, so that the crushing blade 12 and the material are driven to rotate in the opposite direction, and a better cutting effect can be achieved on the material in the rotating process; after the granularity of the material cut by the crushing blade 12 meets the requirement, the material automatically falls into the drying barrel 3 from the screen mesh structure of the crushing and screening barrel 6 in the rotating process. The hot air blower 14 is turned on, hot air generated by the hot air blower 14 enters the hollow cavity 15 of the wall of the drying barrel 3 through the hot air pipeline 16, and then is sprayed into the drying barrel 3 through the air outlet pipes 17 and the nozzles 18 to dry the materials in the drying barrel 3; moisture and peculiar smell generated in the drying process are discharged from the air outlet 35, and are purified through the activated carbon filter layer 27 and the adsorption layer 28 in the discharging process, so that the pollution to the surrounding environment is avoided; after drying, the blocking block at the discharge port 4 is opened, and the dried material can be automatically discharged.
Further, the application of the selenium-rich chicken feed additive is that the selenium-rich chicken feed additive is added into green-shell layer chicken feed according to the mass ratio of 1:2000, and the green-shell layer chicken feed is fed. And (4) detecting the selenium content of eggs produced by the green-shell laying hens after feeding for 7 days.
Three groups of green-shell eggs produced by the method on 22 months and 4 months in 2020 are randomly selected, each group of three green-shell eggs is marked as Changshun green-shell egg (4.22A), Changshun green-shell egg (4.22B) and Changshun green-shell egg (4.22C), the selenium content of 3 groups of samples is detected by the GB 5009.93-2017 third method, and the detection result is shown in attached figures 6-8. As can be seen from the attached figures 6-8, the selenium content of the green shell eggs produced by the method is respectively 0.277mg/kg, 0.371mg/kg and 0.321mg/kg, and the selenium content meets the standard of 0.2mg/kg-0.5 mg/kg.
Example two:
a selenium-rich chicken feed additive comprises a fulvic acid selenium dry powder material, biochemical fulvic acid, vitamin E and vitamin B, wherein the mass ratio of the fulvic acid selenium dry powder material to the biochemical fulvic acid to the vitamin E to the vitamin B is 1:23:1: 12.
Further, the preparation of the selenium fulvate dry powder comprises the following steps,
s1: carrying out a complex reaction on the fulvic acid solution and sodium selenite to prepare a fulvic acid selenium solution;
specifically, the mass ratio of the fulvic acid solution to the sodium selenite is 200: 1; the temperature of the complexation reaction is 65 ℃, and the complexation time is 6 hours.
S2: adding corn flour into the selenium-fulvic acid solution, and mixing to obtain a selenium-fulvic acid wet material; the liquid-solid ratio of the selenium fulvate solution to the corn flour is 1: 50.
s3: and drying, crushing and screening the selenium-fulvic acid wet material to obtain a selenium-fulvic acid dry powder material.
Specifically, in the operation step, a drying, crushing and screening integrated machine is used for drying, crushing and screening the selenium fulvate wet material; the structure of the drying, crushing and screening all-in-one machine is the same as that of the drying, crushing and screening all-in-one machine in the embodiment.
Further, the application of the selenium-rich chicken feed additive is that the selenium-rich chicken feed additive is added into green-shell layer chicken feed according to the mass ratio of 1:2000, and the green-shell layer chicken feed is fed. And (4) detecting the selenium content of eggs produced by the green-shell laying hens after feeding for 7 days.
Three groups of green-shell eggs produced by the method on 5-15 days in 2020 are randomly selected, each group of three green-shell eggs are respectively marked as Changshun green-shell eggs (5.15A), Changshun green-shell eggs (5.15B) and Changshun green-shell eggs (5.15C), the selenium content of 3 groups of samples are respectively detected by a GB 5009.93-2017 third method, and the detection results are shown in attached figures 9-11. As can be seen from the attached figures 9-11, the selenium content of the green shell eggs produced by the method is respectively 0.344mg/kg, 0.295mg/kg and 0.344mg/kg, and the selenium content meets the standard of 0.2mg/kg-0.5 mg/kg; meanwhile, the lead content is detected by a second method of GB 5009.12-2017, the inorganic arsenic content is detected by a first method of GB5009.11-2014, the total mercury content is detected by a first method of GB 5009.17-2014, and the cadmium content is detected by a first method of GB 5009.268-2016, and the result shows that the lead, the inorganic arsenic, the total mercury and the cadmium in the selenium-enriched eggs produced by the method are detected.
Example three:
a selenium-rich chicken feed additive comprises a fulvic acid selenium dry powder material, biochemical fulvic acid, vitamin E and vitamin B, wherein the mass ratio of the fulvic acid selenium dry powder material to the biochemical fulvic acid to the vitamin E to the vitamin B is 1:23:1: 12.
Further, the preparation of the selenium fulvate dry powder comprises the following steps,
s1: carrying out a complex reaction on the fulvic acid solution and sodium selenite to prepare a fulvic acid selenium solution;
specifically, the mass ratio of the fulvic acid solution to the sodium selenite is 200: 1; the temperature of the complexation reaction is 65 ℃, and the complexation time is 6 hours.
S2: adding corn flour into the selenium-fulvic acid solution, and mixing to obtain a selenium-fulvic acid wet material; the liquid-solid ratio of the selenium fulvate solution to the corn flour is 1: 50.
s3: and drying, crushing and screening the selenium-fulvic acid wet material to obtain a selenium-fulvic acid dry powder material.
Specifically, in the operation step, a drying, crushing and screening integrated machine is used for drying, crushing and screening the selenium fulvate wet material; the structure of the drying, crushing and screening all-in-one machine is the same as that of the drying, crushing and screening all-in-one machine in the embodiment.
Further, the application of the selenium-rich chicken feed additive is that the selenium-rich chicken feed additive is added into green-shell layer chicken feed according to the mass ratio of 1:2000, and the green-shell layer chicken feed is fed. And (4) detecting the selenium content of eggs produced by the green-shell laying hens after feeding for 7 days.
Randomly selecting one group of three green shell eggs produced by the method in 31/7/2020, and detecting selenium content by GB 5009.93-2017 third methodThe detection results are shown in FIG. 12. As can be seen from the attached figure 12, the selenium content of the green shell eggs produced by the method is 0.308mg/kg, and the selenium content meets the standard of 0.2mg/kg-0.5 mg/kg; meanwhile, the method in appendix A in DBS42/002-2014 is adopted to detect the content of inorganic arsenic, the GB 5009.12-2017 second method is adopted to detect the content of lead, the GB 5009.268-2016 first method is adopted to detect the content of cadmium, and the GB5009.11-2014 second first method is adopted to detect the content of inorganic arsenicsThe content is detected, the total mercury content is detected by adopting a first method of GB 5009.17-2014, and the result shows that inorganic arsenic, lead, cadmium and inorganic arsenic in the selenium-rich eggs produced by adopting the method aresAnd total mercury were detected.
Two groups of green shell eggs produced by the method on 23/7/2020, are randomly selected as a first group, a second group and a group of three eggs, and selenium content detection is performed by using a GB 5009.93-2017 third method, wherein the detection results are shown in figures 13 and 14, wherein figure 13 is the detection result of the first group of eggs, and figure 14 is the detection result of the second group of eggs. As can be seen from the attached figures 13 and 14, the selenium content of the green shell eggs produced by the method is 0.288mg/kg and 0.420mg/kg respectively, and the selenium content meets the standard of 0.2mg/kg-0.5 mg/kg; meanwhile, the method in appendix A in DBS42/002-2014 is adopted to detect the content of inorganic arsenic, the GB 5009.12-2017 second method is adopted to detect the content of lead, the GB 5009.268-2016 first method is adopted to detect the content of cadmium, and the GB5009.11-2014 second first method is adopted to detect the content of inorganic arsenicsThe content is detected, the total mercury content is detected by adopting a first method of GB 5009.17-2014, and the result shows that inorganic arsenic, lead, cadmium and inorganic arsenic in the selenium-rich eggs produced by adopting the method aresAnd total mercury were detected.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A selenium-rich chicken feed additive is characterized in that: the vitamin E-vitamin B-fulvic acid dry powder comprises a fulvic acid selenium dry powder material, biochemical fulvic acid, vitamin E and vitamin B, wherein the mass ratio of the fulvic acid selenium dry powder material to the biochemical fulvic acid to the vitamin E to the vitamin B is 1: 20-25: 1: 12-15.
2. The selenium-enriched chicken feed additive according to claim 1, which is characterized in that: the mass ratio of the selenium fulvate dry powder to the biochemical fulvic acid to the vitamin E to the vitamin B is 1:23:1: 12.
3. The selenium-enriched chicken feed additive according to claim 1 or 2, which is characterized in that: the preparation method of the selenium fulvate dry powder comprises the following steps,
s1: carrying out a complex reaction on the fulvic acid solution and sodium selenite to prepare a fulvic acid selenium solution;
s2: adding corn flour into the selenium-fulvic acid solution, and mixing to obtain a selenium-fulvic acid wet material;
s3: and drying, crushing and screening the selenium-fulvic acid wet material to obtain a selenium-fulvic acid dry powder material.
4. The selenium-enriched chicken feed additive according to claim 3, wherein the mass ratio of the fulvic acid solution to the sodium selenite in the step S1 is 300-150: 1; the temperature of the complexation reaction is 50-80 ℃, and the complexation time is 4-8 hours.
5. The selenium-enriched chicken feed additive according to claim 3, wherein the mass ratio of the selenium fulvate solution to the corn meal in step S2 is 1: 40-60.
6. The selenium-enriched chicken feed additive according to claim 3, which is characterized in that: in the step S3, drying, crushing and screening the selenium fulvate wet material by using a drying, crushing and screening integrated machine; the drying, crushing and screening all-in-one machine comprises a plurality of first supports (1) and second supports (2), a drying barrel (3) is mounted on each first support (1), the bottom surface of each drying barrel (3) is of an inclined structure, a discharge hole (4) is formed in one side surface, close to the bottom of the inclined structure, of each drying barrel (3), the discharge hole (4) is located at the bottom of the corresponding side surface, and a barrel cover (5) is movably connected to the top of each drying barrel (3);
a crushing and screening barrel (6) is rotatably arranged in the drying barrel (3), the crushing and screening barrel (6) is in a horizontal cylindrical shape, and the crushing and screening barrel (6) is in a screen structure; the crushing and screening barrel (6) is an eccentric barrel, a feeding hole is formed in the top of the crushing and screening barrel (6), and a sealing cover (13) is movably connected to the feeding hole;
a rotating shaft (7) penetrates through the crushing and screening barrel (6), the rotating shaft (7) is fixedly connected with the left side wall and the right side wall of the crushing and screening barrel (6), one end of the rotating shaft (7) is rotatably connected with the inner wall of the left side of the drying barrel (3), and the other end of the rotating shaft (7) penetrates through the right side wall of the drying barrel (3) and is fixedly connected with an output shaft of a driving motor (8) installed on the second support (2);
an eccentric wheel (9) is fixedly installed at one end, close to the left side wall of the drying barrel (3), of the rotating shaft (7), the right side face of the eccentric wheel (9) is fixedly connected with the crushing and screening barrel (6) through a connecting barrel (10), and the connecting barrel (10) is also of a screen mesh structure;
a crushing shaft (11) is sleeved outside the part, located in the crushing and screening barrel (6), of the rotating shaft (7), the crushing shaft (11) is of a hollow structure, a driving assembly is arranged inside the crushing shaft (11), the driving assembly is located outside the rotating shaft (7), the driving assembly drives the crushing shaft (11) and the rotating shaft (7) to rotate in the opposite direction, and a plurality of crushing blades (12) are fixedly arranged on the periphery of the crushing shaft (11);
an air heater (14) is arranged on one side of the drying barrel (3), a hollow cavity (15) is arranged on the barrel wall of the drying barrel (3), the air heater (14) is communicated with the hollow cavity (15) through a hot air pipeline (16), a plurality of air outlet pipes (17) are uniformly distributed on the inner side wall of the drying barrel (3), one end of each air outlet pipe (17) is communicated with the hollow cavity (15), and a nozzle (18) is arranged at the other end of each air outlet pipe (17); an air outlet (35) is formed in the barrel cover (5); and an active carbon filter layer (27) and an adsorption layer (28) are arranged at the air outlet (35).
7. The selenium-enriched chicken feed additive according to claim 6, which is characterized in that: the driving assembly comprises a square block (19) sleeved outside the rotating shaft (7), a transverse through hole (20) is formed in the square block (19), and the rotating shaft (7) is located in the through hole (20) and is rotatably connected with the square block (19) through a bearing (21); two mounting rods (22) are fixedly arranged on the right side of the square block (19), the two mounting rods (22) are symmetrically arranged on the upper side and the lower side of the rotating shaft (7), a first gear (23) is rotatably arranged at the end part of each mounting rod (22), a second gear (24) is fixedly arranged on the rotating shaft (7), the two first gears (23) are respectively meshed with the second gear (24), a connecting rod (25) is fixedly arranged on the right side surfaces of the two second gears (24), one end of each connecting rod (25) is fixedly connected with the right side surface of the corresponding first gear (23), and the other end of each connecting rod (25) is fixedly connected with the inner side surface of the crushing shaft (11);
the left side surface and the right side surface of the crushing shaft (11) are provided with through holes matched with the rotating shaft (7), and sliding grooves (26) are arranged at the positions of the rotating shaft (7) corresponding to the left side surface and the right side surface of the crushing shaft (11).
8. The selenium-enriched chicken feed additive according to claim 7, which is characterized in that: a third gear (29) is fixedly mounted at a position, close to the right side wall of the drying barrel (3), of the rotating shaft (7), the third gear (29) is located in the drying barrel (3), a fourth gear (30) is further mounted on the right side wall of the drying barrel (3), the fourth gear (30) is located right below the third gear (29), and the third gear (29) is connected with the fourth gear (30) through a chain (31); the left surface fixed mounting of fourth gear (30) has stirring shaft (32), the right-hand member of stirring shaft (32) with the left surface fixed connection of fourth gear (30), the left end of stirring shaft (32) with the left side wall of drying barrel (3) rotates and connects, the bottom parallel of stirring shaft (32) has set firmly many stirring rod (33), many the length of stirring rod (33) is along the incline direction of drying barrel (3) bottom surface increases gradually, every the bottom of stirring rod (33) all is equipped with curved doctor-bar (34).
9. The use of the selenium-enriched chicken feed additive as claimed in any one of claims 1, 2, 4-8, wherein: the feed is added into the feed for the green-shell laying hens according to the mass ratio of 1:2000, and the green-shell laying hens are fed.
10. The application of the selenium-enriched chicken feed additive according to claim 9, which is characterized in that: selenium content of selenium-rich green shell egg produced by feeding green shell laying hens for 7 days is 0.2mg/kg-0.5 mg/kg.
CN202110343629.6A 2021-03-30 2021-03-30 Selenium-rich chicken feed additive and application thereof Pending CN113287689A (en)

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