CN107410772B - Semi-floating whitebait culture feed and preparation method thereof - Google Patents

Semi-floating whitebait culture feed and preparation method thereof Download PDF

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CN107410772B
CN107410772B CN201710746293.1A CN201710746293A CN107410772B CN 107410772 B CN107410772 B CN 107410772B CN 201710746293 A CN201710746293 A CN 201710746293A CN 107410772 B CN107410772 B CN 107410772B
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parts
powder
meal
mixed material
whitebait
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CN107410772A (en
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余青山
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Hanshou Yinhean Agriculture And Forestry Technology Development Co ltd
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Hanshou Yinhean Agriculture And Forestry Technology Development Co ltd
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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
    • A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/20—Animal feeding-stuffs from material of animal origin
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/20—Animal feeding-stuffs from material of animal origin
    • A23K10/26—Animal feeding-stuffs from material of animal origin from waste material, e.g. feathers, bones or skin
    • 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
    • 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
    • A23K10/37—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
    • 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
    • A23K20/163—Sugars; Polysaccharides
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/25—Shaping or working-up of animal feeding-stuffs by extrusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish
    • Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87—Re-use of by-products of food processing for fodder production

Abstract

The invention discloses a semi-floating whitebait breeding feed and a preparation method thereof, the feed is prepared from livestock and poultry leftover zymolyte, fishbone meal, Dongting lake asparagus leaf meal, green hay meal, cottonseed meal, bean meal, rapeseed meal, S-dimethyl-beta-chloropropionic acid thetin, human placenta hominis meal, Melissitus ruthenicus seed meal, aniseed meal, licorice root meal, cinnamon bark meal, tangerine peel meal, tomato peel meal, pagodatree leaf meal, hydroxypropyl modified starch and water. The prepared feed has a double-layer structure, the inner layer is nutritional ingredients, the outer layer adopts a unique formula to have a special attracting effect on the whitebait, and the product is aromatic in flavor and has a good inducing effect after being puffed at low temperature.

Description

Semi-floating whitebait culture feed and preparation method thereof
Technical Field
The invention relates to the field of aquatic feed preparation, in particular to a semi-floating whitebait culture feed and a preparation method thereof.
Background
The whitebait, also called noodle fish and icefish, is a small fish with slender, semitransparent, naked and scale-free body. The 'Dongting loquat yellow and the silver fish fertilizer are fragrant' said that the Dongting lakeside of May all the year, the loquat is yellow and ripe, the silver fish comes into the market, and the Shangjia cloud is integrated into a landscape of the Dongting water countryside. The whitebait is rich in nutrition, has the characteristics of high protein and low fat, is one of important aquatic products exported in recent years, is particularly popular with consumers in Japan and southeast Asia, and the research on the whitebait culture technology becomes a popular subject of attention.
At present, research reports on whitebait feed in the market are few, most people stay in research on feed formulas, the habit of throwing livestock and poultry leftovers into a fishpond for whitebait culture is also used in folk, and due to the fact that a plurality of matters such as hair, fur, cuticle and the like exist in the livestock and poultry leftovers, although certain nutrition can be brought to whitebait, water pollution can be caused at the same time. Patent 201510508885.0 discloses a feed for whitebait feeding, which is extruded by an extruder and put into the water area of the whitebait feeding, and the feed is extruded by traditional particles without adopting an extrusion process, has high density and can not float, so that the whitebait can sink to the silt or the impurities at the bottom layer quickly. Since the whitebait is a fish species living in the middle and lower water areas, a lot of feed whitebait with sinking bottom cannot be eaten at all, which causes great waste. The feed can float for about 30 minutes on the water surface, and because no suspended matter is used for controlling suspension, the feed can quickly sink after absorbing water in the floating process, is not beneficial to eating whitebait, and still cannot effectively solve the problem of feed waste.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a semi-buoyant whitebait culture feed which is semi-buoyant, capable of floating in the middle and lower layers of a water area for 15 to 30 minutes, has a special aroma, and can attract whitebait to eat before it, and a method for preparing the same.
In order to achieve the purpose, the invention adopts the following technical scheme:
the semi-floating whitebait breeding feed is characterized in that the feed is particles with a double-layer structure, and the diameter of the particles is 2-7 mm; the feed is prepared from 50-65 parts of livestock and poultry leftover zymolyte, 5-7 parts of fishbone meal, 3-8 parts of Dongting lake asparagus leaf powder, 6-15 parts of green hay meal, 5-10 parts of cottonseed meal, 3-8 parts of bean cake powder, 2-7 parts of rapeseed meal, 2-5 parts of S, S-dimethyl-beta-chloropropionic acid thetin, 4-7 parts of human placenta, 3-9 parts of Melissitus ruthenicus seed powder, 5-8 parts of fructus Anisi Stellati powder, 2-7 parts of licorice powder, 3-5 parts of cinnamon bark powder, 1-7 parts of dried orange peel powder, 3-7 parts of tomato peel powder, 2-7 parts of Japanese pagodatree leaf powder, 10-24 parts of hydroxypropyl modified starch and 18-38 parts of water.
Furthermore, the livestock and poultry leftover enzymatic hydrolysate is prepared by adding cellulase and alkaline protease into livestock and poultry leftovers, and then carrying out enzymolysis, inactivation, concentration and spray drying on the livestock and poultry leftovers.
Furthermore, the Dongting lake asparagus leaf powder is prepared by drying Dongting lake and asparagus leaves around the Dongting lake in the sun and then crushing, and the granularity of the powder is between 10 and 20 meshes.
Furthermore, the tomato peel powder is prepared by crushing tomatoes, filtering to obtain light red peel, drying and crushing, and the granularity of the tomato peel powder is between 10 and 20 meshes.
Furthermore, the hydroxypropyl modified starch is prepared from a starch raw material according to a hydroxypropyl modification method.
Furthermore, the Melissitus ruthenicus seeds are also called as coriander seeds, which are a substance with unique flavor.
The other raw materials are all sold in the market.
Further, the preferable formula of the semi-floating whitebait breeding feed is as follows: 58 parts of livestock and poultry leftover zymolyte, 6 parts of fishbone meal, 5 parts of Dongting lake asparagus leaf powder, 10 parts of green hay meal, 8 parts of cottonseed meal, 5 parts of bean meal, 5 parts of rapeseed meal, 4 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 5 parts of human placenta meal, 6 parts of Melissus ruthenicus seeds meal, 6 parts of aniseed meal, 4 parts of licorice root meal, 3 parts of cinnamon bark meal, 2 parts of tangerine peel meal, 4 parts of tomato peel meal, 5 parts of Japanese pagodatree leaf meal, 16 parts of hydroxypropyl modified starch and 26 parts of water.
The preparation method of the semi-floating whitebait culture feed is characterized by comprising the following processing and production processes:
preparing a first mixed material: adding 58 parts of livestock and poultry leftover zymolyte, 6 parts of fishbone meal, 5 parts of Dongting lake asparagus leaf powder, 10 parts of green hay powder, 8 parts of cottonseed cake powder, 5 parts of soybean cake powder and 5 parts of rapeseed cake powder into a powder mixer for stirring uniformly, slowly adding 16 parts of water into the powder during stirring, and stirring uniformly to obtain a first mixed material;
(II) preparing a second mixed material: adding 4 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 5 parts of placenta hominis powder, 6 parts of alfalfa seed powder, 6 parts of star anise powder, 4 parts of licorice powder, 3 parts of cinnamon powder, 2 parts of tangerine peel powder, 4 parts of tomato peel powder, 5 parts of sophora japonica leaf powder and 16 parts of hydroxypropyl modified starch into a powder mixer for stirring uniformly, slowly adding 10 parts of water into the powder during stirring, and stirring uniformly to obtain a second mixed material;
(III) twin-screw co-extrusion: adding a first mixed material into a machine A of an AB double-screw machine, setting the expansion temperature to be 55-75 ℃ in the front region, 100-120 ℃ in the rear region and controlling the rotating speed of a host machine to be 35-40 HZ; adding the second mixed material into the machine B, setting the puffing temperature to be 50-65 ℃ in the front region, 80-100 ℃ in the rear region, and controlling the rotating speed of a main machine to be 35-40 HZ; wherein the host frequency of the A, B machine is kept consistent, the first mixed material and the second mixed material are extruded through a co-extrusion die head, a double-layer die head for forming the inside and the outside is selected, wherein the extrudate of the first mixed material is arranged on the inner layer, and the extrudate of the second mixed material is wrapped on the outer layer of the first mixed material to form particles with a double-layer structure;
and (IV) drying the semi-finished product with the double-layer structure obtained in the step three in a drying device until the water content is less than 12%, and obtaining the semi-floating whitebait culture feed.
Compared with the prior art, the invention has the beneficial effects that:
1. provides a brand new semi-floating feed, the outer layer is a special temptation component for whitebait, the inner layer is a nutrient component, the feed is extruded and expanded at low temperature, the structure of the outer layer and the inner layer is adjusted, the feed enters water, the product has larger density and can sink rapidly, when the feed contacts water, the secondarily modified hydroxypropyl modified starch on the surface layer can be dissolved rapidly and form a suspension film on the surface of feed particles, the feed can keep suspension in the middle and lower water areas for 15-30 minutes, whitebait living in the middle and lower water areas can eat the feed smoothly, therefore, the semi-floating feed can greatly reduce the waste rate of the feed, through comparison tests, the feed prepared by adopting the raw materials with the same nutrient component, one prepared by adopting the method of the invention, and one prepared by adopting the conventional extrusion granulation process, compared with the feed prepared by adopting the conventional extrusion granulation process, the semi-floating feed prepared by the method can save 4-8% of feed consumption in the process of culturing the whitebait.
2. The feed prepared by the method has a double-layer structure, the outer layer adopts a unique formula, the S, S-dimethyl-beta-chloropropionic acid thetine, the placenta hominis, the Melissitus ruthenicus seeds, the aniseed, the liquorice, the cinnamon, the dried orange peel and other compositions which have a special attraction effect on the whitebait are added, and after low-temperature puffing, the product is aromatic and has a good induction effect.
3. The tomato peel powder is added into the formula, and when the outer layer of the feed is dissolved in water, the color of the feed is similar to that of zooplankton loved by whitebait, so that the induction effect is further enhanced.
4. The feed has reasonable nutrient components, the inner layer feed prepared by mixing the livestock and poultry leftover zymolyte and other substances has the characteristic of rich nutrition, and the Dongting lake asparagus leaf powder is added aiming at the characteristic that Dongting lake silverfish likes to eat Dongting lake asparagus leaves, so that the targeted nutritional effect of the feed is more prominent.
5. The livestock and poultry leftovers are used as main protein sources, compared with the existing formula using the fishbone powder as the main material, the raw material cost is reduced, and the utilization rate of the livestock and poultry leftovers is improved. And the livestock and poultry leftovers are added with cellulase and alkaline protease and then are subjected to enzymolysis, inactivation, concentration and spray drying, so that the pollution of the livestock and poultry leftovers to the water quality environment is avoided.
Detailed Description
The preparation process of the present invention will be described below with reference to specific embodiments.
Example one
The processing and production process of the semi-floating whitebait culture feed comprises the following steps:
preparing a first mixed material: adding 50 parts of livestock and poultry leftover zymolyte, 5 parts of fishbone meal, 3 parts of Dongting lake asparagus leaf powder, 6 parts of green hay powder, 5 parts of cottonseed cake powder, 3 parts of soybean cake powder and 2 parts of rapeseed cake powder into a powder mixer for stirring uniformly, slowly adding 10 parts of water into the powder during stirring, and stirring uniformly to obtain a first mixed material.
(II) preparing a second mixed material: adding 2 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 4 parts of placenta hominis powder, 3 parts of alfalfa seed powder, 5 parts of star anise powder, 2 parts of licorice powder, 3 parts of cinnamon powder, 2 parts of tangerine peel powder, 3 parts of tomato peel powder, 2 parts of sophora japonica leaf powder and 10 parts of hydroxypropyl modified starch into a powder mixer for stirring uniformly, slowly adding 8 parts of water into the powder during stirring, and stirring uniformly to obtain a second mixed material.
(III) twin-screw co-extrusion: adding a first mixed material into a machine A of an AB double-screw machine, setting the puffing temperature to be 55 ℃ in the front region and 100 ℃ in the rear region, and controlling the rotating speed of a main machine to be 35 HZ; adding a second mixed material into the machine B, setting the puffing temperature to be 50 ℃ in the front region and 80 ℃ in the rear region, and controlling the rotating speed of a host machine to be 35 HZ; wherein the host frequency of the A, B machine is kept consistent, the first mixed material and the second mixed material are extruded through a co-extrusion die head, a double-layer die head for forming the inside and the outside is selected, wherein the extrudate of the first mixed material is arranged on the inner layer, and the extrudate of the second mixed material is wrapped on the outer layer of the first mixed material to form particles with a double-layer structure and a diameter of 3 mm.
And (IV) drying the semi-finished product with the double-layer structure obtained in the step three in a drying device until the water content is less than 12%, thus obtaining the semi-floating whitebait culture feed.
Example two
The processing and production process of the semi-floating whitebait culture feed comprises the following steps:
preparing a first mixed material: 58 parts of livestock and poultry leftover zymolyte, 6 parts of fishbone meal, 5 parts of Dongting lake asparagus leaf powder, 10 parts of green hay powder, 8 parts of cottonseed cake powder, 5 parts of soybean cake powder and 5 parts of rapeseed cake powder are added into a powder mixer to be uniformly mixed, 16 parts of water is slowly added into the powder during stirring, and the first mixed material is obtained after uniform mixing.
(II) preparing a second mixed material: 4 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 5 parts of placenta hominis powder, 6 parts of alfalfa seed powder, 6 parts of star anise powder, 4 parts of licorice powder, 3 parts of cinnamon powder, 2 parts of tangerine peel powder, 4 parts of tomato peel powder, 5 parts of sophora japonica leaf powder and 16 parts of hydroxypropyl modified starch are added into a powder mixer to be uniformly stirred, 10 parts of water is slowly added into the powder during stirring, and a mixed material II is obtained after uniform stirring.
(III) twin-screw co-extrusion: adding a first mixed material into a machine A of an AB double-screw machine, setting the puffing temperature to be 65 ℃ in the front region and 110 ℃ in the rear region, and controlling the rotating speed of a main machine to be 40 HZ; adding a second mixed material into the machine B, setting the puffing temperature to be 60 ℃ in the front region and 90 ℃ in the rear region, and controlling the rotating speed of a main machine to be 40 HZ; the host frequency of the A, B machine is kept consistent, the first mixed material and the second mixed material are extruded through a co-extrusion die head, a double-layer die head for forming the inside and the outside is selected, the extrudate of the first mixed material is arranged on the inner layer, and the extrudate of the second mixed material is wrapped on the outer layer of the first mixed material to form particles with a double-layer structure and a diameter of 5 mm.
And (IV) drying the semi-finished product with the double-layer structure obtained in the step three in a drying device until the water content is less than 12%, thus obtaining the semi-floating whitebait culture feed.
EXAMPLE III
The processing and production process of the semi-floating whitebait culture feed comprises the following steps:
preparing a first mixed material: adding 65 parts of livestock and poultry leftover zymolyte, 7 parts of fishbone meal, 8 parts of Dongting lake asparagus leaf powder, 15 parts of green hay powder, 10 parts of cottonseed cake powder, 8 parts of soybean cake powder and 7 parts of rapeseed cake powder into a powder mixer for stirring uniformly, slowly adding 28 parts of water into the powder during stirring, and stirring uniformly to obtain a first mixed material.
(II) preparing a second mixed material: adding 5 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 7 parts of placenta hominis powder, 9 parts of alfalfa seed powder, 8 parts of star anise powder, 7 parts of licorice powder, 5 parts of cinnamon powder, 7 parts of dried orange peel powder, 7 parts of tomato peel powder, 7 parts of sophora leaf powder and 24 parts of hydroxypropyl modified starch into a powder mixer for stirring uniformly, slowly adding 10 parts of water into the powder during stirring, and stirring uniformly to obtain a mixed material II.
(III) twin-screw co-extrusion: adding a first mixed material into a machine A of an AB double-screw machine, setting the puffing temperature to be 75 ℃ in the front region and 120 ℃ in the rear region, and controlling the rotating speed of a main machine to be 40 HZ; adding a second mixed material into the machine B, setting the puffing temperature to be 65 ℃ in the front region, 100 ℃ in the rear region and controlling the rotating speed of a main machine to be 40 HZ; the host frequency of the A, B machine is kept consistent, the first mixed material and the second mixed material are extruded through a co-extrusion die head, a double-layer die head for forming the inside and the outside is selected, the extrudate of the first mixed material is arranged on the inner layer, and the extrudate of the second mixed material is wrapped on the outer layer of the first mixed material to form particles with a double-layer structure and a diameter of 7 mm.
And (IV) drying the semi-finished product with the double-layer structure obtained in the step three in a drying device until the water content is less than 12%, thus obtaining the semi-floating whitebait culture feed.
The above description is only a preferred embodiment of the present invention, and it is needless to say that the scope of the present invention is not limited by this, and therefore, the scope of the present invention is covered by the claims equivalent to the modifications of the present invention.

Claims (6)

1. The semi-floating whitebait breeding feed is characterized in that the feed is particles with a double-layer structure, and the diameter of the particles is 2-7 mm; the feed is prepared from 50-65 parts of livestock and poultry leftover zymolyte, 5-7 parts of fishbone meal, 3-8 parts of Dongting lake asparagus leaf powder, 6-15 parts of green hay meal, 5-10 parts of cottonseed meal, 3-8 parts of bean cake powder, 2-7 parts of rapeseed meal, 2-5 parts of S, S-dimethyl-beta-chloropropionic acid thetin, 4-7 parts of human placenta, 3-9 parts of Melissitus ruthenicus seed powder, 5-8 parts of fructus Anisi Stellati powder, 2-7 parts of licorice powder, 3-5 parts of cinnamon bark powder, 1-7 parts of dried orange peel powder, 3-7 parts of tomato peel powder, 2-7 parts of Japanese pagodatree leaf powder, 10-24 parts of hydroxypropyl modified starch and 18-38 parts of water; wherein, the mixture I comprises livestock and poultry leftover zymolyte, fishbone meal, Dongting lake asparagus leaf powder, green hay powder, cottonseed cake powder, bean cake powder and rapeseed cake powder; s, S-dimethyl-beta-chloropropionic acid thetine, placenta hominis powder, alfalfa seed powder, star anise powder, licorice powder, cinnamon powder, tangerine peel powder, tomato peel powder, pagodatree leaf powder and hydroxypropyl modified starch form a mixed material II, the mixed material I and the mixed material II are extruded out through a co-extrusion die head, a double-layer die head for forming inside and outside is selected, the extrudate of the mixed material I is arranged on the inner layer, and the extrudate of the mixed material II is wrapped on the outer layer of the mixed material I to form particles with a double-layer structure; the livestock and poultry leftover zymolyte is prepared by adding cellulase and alkaline protease into livestock and poultry leftovers, and then carrying out enzymolysis, inactivation, concentration and spray drying on the livestock and poultry leftovers.
2. The feed for culturing semi-floating whitebait according to claim 1, wherein the Dongting lake asparagus leaf powder is prepared by drying and crushing Dongting lake and asparagus leaves around the Dongting lake, and the granularity of the powder is 10-20 meshes.
3. The feed for culturing semi-floating whitebait according to claim 1, wherein the tomato skin powder is prepared by crushing tomatoes, filtering the crushed tomato skin to obtain light red skin, drying and crushing the light red skin, and the granularity of the light red skin is 10-20 meshes.
4. The semi-floating whitebait culture feed as claimed in claim 1, wherein the modified hydroxypropyl starch is a modified hydroxypropyl starch prepared by a method of modifying a starch raw material by hydroxypropyl modification.
5. The semi-buoyant whitebait culture feed of claim 1, wherein the preferred formulation of the semi-buoyant whitebait culture feed is: 58 parts of livestock and poultry leftover zymolyte, 6 parts of fishbone meal, 5 parts of Dongting lake asparagus leaf powder, 10 parts of green hay meal, 8 parts of cottonseed meal, 5 parts of bean meal, 5 parts of rapeseed meal, 4 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 5 parts of human placenta meal, 6 parts of Melissus ruthenicus seeds meal, 6 parts of aniseed meal, 4 parts of licorice root meal, 3 parts of cinnamon bark meal, 2 parts of tangerine peel meal, 4 parts of tomato peel meal, 5 parts of Japanese pagodatree leaf meal, 16 parts of hydroxypropyl modified starch and 26 parts of water.
6. The method for preparing the semi-floating whitebait culture feed according to claim 1, wherein the processing and production process comprises the following steps:
preparing a first mixed material: adding 58 parts of livestock and poultry leftover zymolyte, 6 parts of fishbone meal, 5 parts of Dongting lake asparagus leaf powder, 10 parts of green hay powder, 8 parts of cottonseed cake powder, 5 parts of soybean cake powder and 5 parts of rapeseed cake powder into a powder mixer for stirring uniformly, slowly adding 16 parts of water into the powder during stirring, and stirring uniformly to obtain a first mixed material;
(II) preparing a second mixed material: adding 4 parts of S, S-dimethyl-beta-chloropropionic acid thetine, 5 parts of placenta hominis powder, 6 parts of alfalfa seed powder, 6 parts of star anise powder, 4 parts of licorice powder, 3 parts of cinnamon powder, 2 parts of tangerine peel powder, 4 parts of tomato peel powder, 5 parts of sophora japonica leaf powder and 16 parts of hydroxypropyl modified starch into a powder mixer for stirring uniformly, slowly adding 10 parts of water into the powder during stirring, and stirring uniformly to obtain a second mixed material;
(III) twin-screw co-extrusion: adding a first mixed material into a machine A of an AB double-screw machine, setting the expansion temperature to be 55-75 ℃ in the front region, 100-120 ℃ in the rear region and controlling the rotating speed of a host machine to be 35-40 HZ; adding the second mixed material into the machine B, setting the puffing temperature to be 50-65 ℃ in the front region, 80-100 ℃ in the rear region, and controlling the rotating speed of a main machine to be 35-40 HZ; wherein the host frequency of the A, B machine is kept consistent, the first mixed material and the second mixed material are extruded through a co-extrusion die head, a double-layer die head for forming the inside and the outside is selected, wherein the extrudate of the first mixed material is arranged on the inner layer, and the extrudate of the second mixed material is wrapped on the outer layer of the first mixed material to form particles with a double-layer structure;
and (IV) drying the semi-finished product with the double-layer structure obtained in the step three in a drying device until the water content is less than 12%, and obtaining the semi-floating whitebait culture feed.
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Citations (6)

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CN105076804A (en) * 2015-08-18 2015-11-25 杨文礼 Silverfish raising feed and preparation method thereof
CN106562132A (en) * 2016-11-14 2017-04-19 重庆文洪水产品养殖有限公司 Sinking feed for aquaculture animals in middle and lower layers and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1081580A (en) * 1993-02-23 1994-02-09 易鹤翔 A kind of collagen protein floating aquaculture bait and production method thereof
CN1293906A (en) * 1999-10-20 2001-05-09 江苏正昌集团公司 Process for preparing granular feed of high-grade special aquatic products
CN103875978A (en) * 2014-03-20 2014-06-25 苏州市阳澄湖现代农业产业园特种水产养殖有限公司 Preparation method for water-resistant aquaculture fodder
CN104026413A (en) * 2014-06-26 2014-09-10 武汉轻工大学 Special slow sinking type feed for bighead and preparation process of feed
CN105076804A (en) * 2015-08-18 2015-11-25 杨文礼 Silverfish raising feed and preparation method thereof
CN106562132A (en) * 2016-11-14 2017-04-19 重庆文洪水产品养殖有限公司 Sinking feed for aquaculture animals in middle and lower layers and preparation method thereof

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