CN114886049A - Preparation method of aquatic feed added with chitosan oligosaccharide - Google Patents
Preparation method of aquatic feed added with chitosan oligosaccharide Download PDFInfo
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- CN114886049A CN114886049A CN202210423305.8A CN202210423305A CN114886049A CN 114886049 A CN114886049 A CN 114886049A CN 202210423305 A CN202210423305 A CN 202210423305A CN 114886049 A CN114886049 A CN 114886049A
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- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 238000010298 pulverizing process Methods 0.000 claims abstract description 27
- 241001465754 Metazoa Species 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
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- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004472 Lysine Substances 0.000 claims abstract description 9
- 239000002366 mineral element Substances 0.000 claims abstract description 9
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- 239000004467 fishmeal Substances 0.000 claims abstract description 8
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Classifications
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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
- A23K10/22—Animal feeding-stuffs from material of animal origin from fish
-
- 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
- A23K20/142—Amino acids; Derivatives thereof
-
- 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
- A23K20/158—Fatty acids; Fats; Products containing oils or fats
-
- 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
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/22—Compounds of alkali metals
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- 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
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- 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
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- 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
- A23K40/30—Shaping or working-up of animal feeding-stuffs by encapsulating; by coating
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- 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 preparation method of an aquatic feed added with chitosan oligosaccharide, and particularly relates to the field of aquatic feed preparation, the aquatic feed comprises a basic feed and a chitosan oligosaccharide additive, the chitosan oligosaccharide additive is 2% -5% of chitosan oligosaccharide, and the preparation method of the aquatic feed comprises the following steps: the method comprises the following steps: preparing basic feed, namely firstly selecting the basic feed, wherein the basic material comprises 35% of soybean meal, 12% of fish meal, 20% of wheat bran, 10% of flour, 6% of wheat middling, 7% of fat, 5% of aquatic animal compound mineral elements, 2% of lysine and 1% of salt, weighing by a metering device, and finally sequentially introducing into a pulverizer according to a formula, wherein the step II comprises the following steps: pulverizing, and pulverizing basic feed with DF-50-A micronizer. According to the invention, the chitosan oligosaccharide is added into the aquatic feed, so that the survival rate and the growth speed of the fry are improved, and in an experiment, the survival rate of the fry using the aquatic feed is improved by about 10 percent on average and the growth speed is improved by about 14.2 percent on average compared with the survival rate of the traditional aquatic feed.
Description
Technical Field
The invention relates to the technical field of feeds, and particularly relates to a preparation method of an aquatic feed added with chitosan oligosaccharide.
Background
Chitosan oligosaccharide, called chitosan oligosaccharide and oligomeric chitosan, with the scientific name of beta-1, 4-oligosaccharide-glucosamine, is a brand new product obtained by processing chitosan through a special biological enzyme technology, has the polymerization degree of 2-20, the molecular weight of less than or equal to 3200Da, has the characteristics of no pollution, no residue, high efficiency, low cost and the like, is an ideal substitute of antibiotics, has very obvious effects on improving the immunity and disease resistance of aquatic animals (fish, shrimp, shellfish and ginseng), promotes growth and the like, is mature in preparation and action mechanism research at present, has wide application prospect and is environment-friendly, but no specific product is prepared in aquatic feed.
In the intensive aquaculture process of aquatic animals, the selection of the aquatic feed is an important factor influencing the quality of the aquatic animals, the aquatic feed is a bait specially provided for the aquaculture of the aquatic animals, the raw materials mainly comprise fish meal, grain raw materials, grease and trace elements, China is the biggest aquatic feed producing country in the world at present, the aquatic feed can still grow at the speed of about 5 percent every year in the future, the common problems in the intensive aquaculture are that the aquatic animals are infected by pathogenic microorganisms, mass death occurs, a plurality of farmers lose disasters, cost is saved, management is convenient, a large amount of artificially synthesized feed additives such as antibiotics, growth promoters and the like appear in the market, wherein the abuse of the antibiotics causes the increase of bacterial drug resistance, the reduction of the immunity of the aquatic animals, the antibiotic residues in aquatic product environments and the like, and the serious harm is caused to the aquaculture industry, the feed industry, the aquatic animals and the health of human beings, the invention discloses an antibiotic-free microbial fermentation aquatic feed which is invented at present and capable of improving the immunity and survival rate of aquatic animals, for example, the invention patent application with the publication number of CN101253941B, and the antibiotic-free microbial fermentation aquatic feed comprises a microbial fermentation culture, mineral trace elements, a compound vitamin preparation, a phagostimulant, bran, flour, fish meal, soybean meal and the like, but a microbial ecological fermentation product is sensitive to temperature and humidity and requires the temperature to be 10-45 ℃, the water activity to be 0.1-0.25aw, and the water activity of the aquatic feed is below 0.6aw and usually cannot reach 0.1-0.25aw, so that the number of live bacteria in the aquatic feed is difficult to guarantee, and the expected antibacterial effect and the survival rate improvement cannot be achieved.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a preparation method of an aquatic feed added with chitosan oligosaccharide, which is used for solving the problems of poor antibacterial effect and overproof antibiotics in the aquatic feed in the background technology by adding chitosan oligosaccharide into a nutritionally balanced aquatic feed formula.
In order to achieve the purpose, the invention provides the following technical scheme: the aquatic feed added with chitosan oligosaccharide comprises a basal feed and a chitosan oligosaccharide additive, wherein the chitosan oligosaccharide additive is added in an amount of 2-5%, and the preparation method of the aquatic feed comprises the following steps:
the method comprises the following steps: preparing a basic feed, namely firstly selecting the basic feed, weighing the basic feed by using a metering device, wherein the basic feed comprises 35% of soybean meal, 12% of fish meal, 20% of wheat bran, 10% of flour, 6% of wheat middling, 7% of fat, 5% of aquatic animal compound mineral elements, 2% of lysine and 1% of salt, and finally sequentially introducing the basic feed into a crusher according to a formula;
step two: pulverizing, namely pulverizing the basic feed by adopting an ultrafine pulverizer with the model of DF-50-A, wherein the pulverizing fineness is 80-120, simultaneously completing the processes of pulverizing, grading and re-pulverizing, and finally guiding into a mixer;
step three: mixing, namely, adopting a single-shaft coulter type Buhler DFLM series mixer, and guiding the mixture into a granulator after mixing;
step four: granulating, namely adding water into a granulator filled with the mixture, granulating by adopting an EM-104YK-160 type swing granulator, and introducing into an expansion machine after granulating;
step five: puffing and curing, namely puffing and curing the granules by adopting a shepherd puffing machine with the model of MY165, cooling the granules to 40 ℃ in the puffing machine after puffing and curing, and introducing the granules into a dryer;
step six: cooling and drying, then conveying the mixture to an SKGD series belt type circulation dryer for drying through a spiral conveying device, and finally introducing the dried mixture into spraying system equipment;
step seven: spraying chitosan oligosaccharide, and spraying the surface of the feed particles by adopting liquid spraying equipment;
step eight: and (5) packaging in a grading way, and finally packaging the finished product of the granules by adopting a belt feeding type packaging machine with the model of CKBZJ.
In a preferred embodiment, the fat, the aquatic animal complex mineral elements, the lysine and the salt are all put into the mixer after the main materials are put into the mixer for mixing.
The diameter value of the step four granulation ranges from 0.5mm to 5 mm.
In a preferred embodiment, the operating temperature of the SKGD series belt circulation dryer in the sixth step is 85 ℃, and the operating time is 1 h.
In a preferred embodiment, the degree of expansion in step 5 is between 1.4 and 1.8.
The invention has the technical effects and advantages that:
1. according to the invention, chitosan oligosaccharide is added into the aquatic feed, so that the survival rate and the growth speed of the fry are improved. In experiments, the survival rate of the fry is improved by about 10 percent compared with the survival rate of the traditional aquatic feed, and the growth speed is improved by about 14.2 percent on average.
2. According to the preparation method of the aquatic feed added with the chitosan oligosaccharide, the chitosan oligosaccharide is sprayed on the surface of the feed particles by adopting liquid spraying equipment, so that the problem that the content of the chitosan oligosaccharide is reduced in high-temperature puffing is avoided. The aquatic feed can ensure the antibacterial effect.
Drawings
FIG. 1 is a flow chart of the preparation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
The invention provides an aquatic feed formula and a preparation method thereof, and the technical scheme is as follows: a preparation method of an aquatic feed added with chitosan oligosaccharide comprises a basal feed and a chitosan oligosaccharide additive, wherein the chitosan oligosaccharide additive is added in an amount of 2 percent, and the basal feed comprises: 35% of soybean meal, 12% of fish meal, 17% of wheat bran, 8% of flour, 3% of fat, 5% of aquatic animal composite mineral elements, 2% of lysine and 1% of salt, so that the prepared feed is balanced in nutrition and meets the growth requirements of aquatic animals.
Further, the aquatic feed formula is measured and weighed by the measuring device in the manufacturing process, so that the preparation accuracy of the formula is effectively ensured, and the problem that the feeding period is prolonged due to unbalanced internal preparation is effectively solved.
The preparation method of the aquatic feed comprises the following steps:
the method comprises the following steps: preparing a basic feed, namely selecting preparation materials, weighing the preparation materials by a metering device, dividing the preparation materials by weighing according to a formula, conveying the materials to a raw material receiving inlet of a pulverizer by a transport trolley, and sequentially adding the materials into the pulverizer from a plurality of times according to the formula ratio content;
step two: pulverizing, namely pulverizing the basic feed by adopting an ultrafine pulverizer with the model of DF-50-A, wherein the pulverizing fineness is 80-120, simultaneously completing the processes of pulverizing, grading and re-pulverizing, and finally introducing into a mixer;
step three: mixing, namely adopting a single-shaft coulter type Buhler DFLM series mixer, and guiding the mixture into a granulator after mixing;
step four: granulating, namely adding water into a granulator filled with the mixture, granulating by adopting an EM-104YK-160 type swing granulator, and introducing into an expansion machine after granulating;
step five: puffing and curing, namely puffing and curing the granules by adopting a shepherd puffing machine with the model of MY165, cooling the granules to 45 ℃ in the puffing machine after puffing and curing, and introducing the granules into a dryer;
step six: cooling and drying, then conveying the mixture to an SKGD series belt type circulation dryer for drying through a spiral conveying device, heating the belt type circulation dryer to 120 ℃, drying for 1h, and finally introducing the mixture into spraying system equipment;
step seven: spraying chitosan oligosaccharide, and spraying the surfaces of the feed particles by adopting liquid spraying equipment;
step eight: and (5) packaging the granules by classification by adopting a belt feeding type packaging machine with the model of CKBZJ.
In the embodiment of the application, it is specifically noted that, during preparation, chitosan oligosaccharide effectiveness is effectively ensured by liquid spraying, and internal nutrition of a preparation formula is balanced and is convenient for aquatic animals to absorb, and absorption efficiency is high, so that aquatic animals can be effectively promoted to grow, bacterial diseases of aquatic animals are effectively reduced, so that the cultivation cost of farmers is effectively reduced, and meanwhile, pollution to the environment is reduced.
Wherein, the fat, the aquatic animal compound mineral elements, the lysine and the salt are all put into a mixer in batches when being mixed, the diameter value range of the granulation in the step four is between 0.5 and 5 millimeters, the operation temperature of the SKGD series belt type circulation dryer in the step six is 85 ℃, the operation time is 1 hour, and the expansion degree in the step 5 is 1.4 to 1.8.
In the embodiment of the application, it is specifically noted that the fat is added into the main material 30-60s after the main material is completely added into the mixer, which is beneficial to the full mixing of the feed, the additive is added in batches after half of the raw material is added, the aquatic feed contains raw materials with the adhesive property such as flour, the additive is directly added, which can cause the additive to be difficult to be uniformly distributed in the granules, the diameter value range refers to the diameter of the mouth of the fry, and the feed is suitable for feeding the granular feed with the diameter of 0.5mm for the fish with the body length of 4-6 cm; for fish with a body length of 7-8cm, the fish is preferably fed with pellet feed with a diameter of 3mm, the water content of an extruded and puffed product is relatively high, taking floating fish feed as an example, the water content after demolding is usually 21% -24%, the safe storage water content of the puffed aquatic feed is generally required to be controlled to be about 10%, the drying needs heat, the temperature is higher within an allowable limit, the working efficiency of a dryer is favorably improved, but the nutritional value of the feed, such as non-enzymatic browning, can be influenced under the high-temperature condition. Generally the temperature at which the feed is dried should not exceed 120 c, at which temperature the feed can be held for 4-6 minutes. Experience shows that the general requirement of no sinking and no scattering in water can be met only by controlling the expansion degree of the feed particles to be more than or equal to 1.4 (the ratio of the particle size of the expanded particles to the diameter of a discharge die hole). The expansion degree of the feed reaches or even exceeds 1.8, the surface of the feed granules looks like a plurality of fluffy small bread, the temperature and the pressure in the cavity of the expansion machine are too high, the equipment loss is aggravated, and the protein nutrition in the feed is also reduced.
Example 2
A preparation method of an aquatic feed added with chitosan oligosaccharide comprises a basal feed and a chitosan oligosaccharide additive, wherein the chitosan oligosaccharide additive is added in an amount of 3.5%, and the basal feed comprises: 35% of soybean meal, 12% of fish meal, 17% of wheat bran, 8% of flour, 3% of fat, 5% of aquatic animal composite mineral elements, 2% of lysine and 1% of salt, so that the prepared feed is balanced in nutrition and meets the growth requirements of aquatic animals.
Further, the aquatic feed formula is measured and weighed by the measuring device in the manufacturing process, so that the preparation accuracy of the formula is effectively ensured, and the problem that the feeding period is prolonged due to unbalanced internal preparation is effectively solved.
The preparation method of the aquatic feed comprises the following steps:
the method comprises the following steps: preparing a basic feed, namely selecting preparation materials, weighing the preparation materials by a metering device, dividing the preparation materials by weighing according to a formula, conveying the materials to a raw material receiving inlet of a pulverizer by a transport trolley, and sequentially adding the materials into the pulverizer from a plurality of times according to the formula ratio content;
step two: pulverizing, namely pulverizing the basic feed by adopting an ultrafine pulverizer with the model of DF-50-A, wherein the pulverizing fineness is 80-120, simultaneously completing the processes of pulverizing, grading and re-pulverizing, and finally introducing into a mixer;
step three: mixing, namely adopting a single-shaft coulter type Buhler DFLM series mixer, and guiding the mixture into a granulator after mixing;
step four: granulating, namely adding water into a granulator filled with the mixture, granulating by adopting an EM-104YK-160 type swing granulator, and introducing into an expansion machine after granulating;
step five: puffing and curing, namely puffing and curing the granules by adopting a shepherd puffing machine with the model of MY165, cooling the granules to 45 ℃ in the puffing machine after puffing and curing, and introducing the granules into a dryer;
step six: cooling and drying, then drying in a belt type circulation dryer which is conveyed to HF-20220310 through a spiral conveying device, heating to 85 ℃ by the belt type circulation dryer, drying for 1h, and finally introducing into spraying system equipment;
step seven: spraying chitosan oligosaccharide, and spraying the surface of the feed particles by adopting liquid spraying equipment;
step eight: and (5) packaging the granules by classification by adopting a belt feeding type packaging machine with the model of CKBZJ.
Example 3
A preparation method of an aquatic feed added with chitosan oligosaccharide comprises a basal feed and a chitosan oligosaccharide additive, wherein the chitosan oligosaccharide additive is added in an amount of 5 percent, and the basal feed comprises: 35% of soybean meal, 12% of fish meal, 17% of wheat bran, 8% of flour, 3% of fat, 5% of aquatic animal composite mineral elements, 2% of lysine and 1% of salt, so that the prepared feed is balanced in nutrition and meets the growth requirements of aquatic animals.
Further, the aquatic feed formula is measured and weighed by the measuring device in the manufacturing process, so that the preparation accuracy of the formula is effectively ensured, and the problem that the feeding period is prolonged due to unbalanced internal preparation is effectively solved.
The preparation method of the aquatic feed comprises the following steps:
the method comprises the following steps: preparing a basic feed, namely selecting preparation materials, weighing the preparation materials by a metering device, dividing the preparation materials by weighing according to a formula, conveying the materials to a raw material receiving inlet of a pulverizer by a transport trolley, and sequentially adding the materials into the pulverizer from a plurality of times according to the formula ratio content;
step two: pulverizing, namely pulverizing the basic feed by adopting an ultrafine pulverizer with the model of DF-50-A, wherein the pulverizing fineness is 80-120, simultaneously completing the processes of pulverizing, grading and re-pulverizing, and finally introducing into a mixer;
step three: mixing, namely adopting a single-shaft coulter type Buhler DFLM series mixer, and guiding the mixture into a granulator after mixing;
step four: granulating, namely adding water into a granulator filled with the mixture, granulating by adopting an EM-104YK-160 type swing granulator, and introducing into an expansion machine after granulating;
step five: puffing and curing, namely puffing and curing the granules by adopting a shepherd puffing machine with the model of MY165, cooling the granules to 45 ℃ in the puffing machine after puffing and curing, and introducing the granules into a dryer;
step six: cooling and drying, then drying in a belt type circulation dryer which is conveyed to HF-20220310 through a spiral conveying device, heating to 85 ℃ by a roller dryer, drying for 1h, and finally introducing into spraying system equipment;
step seven: spraying chitosan oligosaccharide, and spraying the surfaces of the feed particles by adopting liquid spraying equipment;
step eight: and (5) packaging the granules in a grading way by adopting a belt feeding type packaging machine with the model of CKBZJ to obtain a finished product.
Examples of the experiments
Taking four groups of fish fries, wherein the number of each group of fish fries is one hundred, and the average amount of each fish fry is 1.8g, respectively placing the fish fries in four fish ponds with the same environment, then feeding the fish fries in the last group by using traditional feed, feeding the fish fries in the other three groups by using the prepared feed in the examples 1-3, feeding the fish fries with the same weight every day, taking the fish fries out of each pond thirty days, weighing the fish fries in the pond, and recording the survival rate and the weight gain rate of the fish fries in 30 days to finally obtain the following table:
| group number | First group | Second group | Third group | Fourth group |
| Number of survivors | 86 | 91 | 92 | 81 |
| Mean body weight | 94.2 | 98.6 | 98.5 | 80.5 |
In conclusion, compared with the traditional aquatic feed, the survival quantity and the growth speed of the fry using the aquatic feed are obviously improved; by the effect of the chitosan oligosaccharide on the fry through different concentration gradient feeds, the optimal effect on the survival quantity and the growth speed of the fry is found when the concentration of the chitosan oligosaccharide is 3.5 percent.
And finally: the present invention is not limited to the above preferred embodiments, but rather, any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An aquatic feed added with chitosan oligosaccharide is characterized in that: comprises a basic feed and a chitosan oligosaccharide additive, wherein the chitosan oligosaccharide additive accounts for 2 to 5 percent of the additive amount of the chitosan oligosaccharide, and the preparation method of the aquatic feed comprises the following steps:
the method comprises the following steps: preparing a basic feed, namely firstly selecting the basic feed, weighing the basic feed by using a metering device, wherein the basic feed comprises 35% of soybean meal, 12% of fish meal, 20% of wheat bran, 10% of flour, 6% of wheat middling, 7% of fat, 5% of aquatic animal compound mineral elements, 2% of lysine and 1% of salt, and finally sequentially introducing the basic feed into a crusher according to a formula;
step two: pulverizing, namely pulverizing the basic feed by adopting an ultrafine pulverizer with the model of DF-50-A, wherein the pulverizing fineness is 80-120 meshes, simultaneously completing the processes of pulverizing, grading and re-pulverizing, and finally introducing into a mixer;
step three: mixing, namely adopting a single-shaft coulter type Buhler DFLM series mixer, and guiding the mixture into a granulator after mixing;
step four: granulating, adding water into granulator filled with mixture, granulating with EM-104YK-160 type swing granulator, introducing into bulking machine,
step five: puffing and curing, namely puffing and curing the granules by adopting a shepherd puffing machine with the model of MY165, cooling the granules to 40 ℃ in the puffing machine after puffing and curing, and introducing the granules into a dryer;
step six: cooling and drying, then conveying the mixture to an SKGD series belt type circulation dryer for drying through a spiral conveying device, and finally introducing the dried mixture into spraying system equipment;
step seven: spraying chitosan oligosaccharide, and spraying the surfaces of the feed particles by adopting liquid spraying equipment;
step eight: and (5) packaging in a grading way, and finally packaging the finished product of the granules by adopting a belt feeding type packaging machine with the model of CKBZJ.
2. The method for preparing aquatic feed added with chitosan oligosaccharide as claimed in claim 1, wherein the method comprises the following steps: the fat, the aquatic animal compound mineral elements, the lysine and the salt are added into the mixer after the main materials are added and mixed.
3. The method for preparing aquatic feed added with chitosan oligosaccharide as claimed in claim 1, wherein the method comprises the following steps: the diameter value of the step four granulation ranges from 0.5mm to 5 mm.
4. The method for preparing aquatic feed added with chitosan oligosaccharide as claimed in claim 1, wherein the method comprises the following steps: and the operation temperature of the SKGD series belt type circulation dryer in the sixth step is 85 ℃, and the operation time is 1 h.
5. The method for preparing aquatic feed added with chitosan oligosaccharide as claimed in claim 1, wherein the method comprises the following steps: the bulking degree in the step 5 is between 1.4 and 1.8.
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| CN103202407A (en) * | 2013-05-03 | 2013-07-17 | 新疆泰昆集团股份有限公司 | Puffed aquatic feed and preparation method thereof |
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| Title |
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| 李明波: "壳寡糖对杂交黄颡鱼"黄优1号"(黄颡鱼♀×瓦氏黄颡鱼♂)生长性能与免疫机能的影响", 《水生生物学报》 * |
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