Composite functional feed additive and application thereof
By using composite functional feed additives, the digestive organ function and stress resistance of largemouth bass and spotted fork-tailed juvenile fish are improved, and the problem of degradation of fish growth performance in high temperature seasons and inclement weather conditions is solved, and the economic benefits of fish growth promotion and breeding are improved.
Patent Information
- Application Number
- CN202411911321.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-21
AI Technical Summary
Largemouth black bass and spotted fork-tailed juvenile fish have decreased growth performance in high temperature seasons and inclement weather conditions, their digestive and absorption capacity have poor resistance to stress, which affects the economic benefits of breeding.
Complex functional feed additives are used, which include Vc-phosphate, taurine, betaine, bile acid, mannose oligosaccharide, β-glucan, Saccharomyces cerevisiae cell wall, sodium butyrate and complex traditional Chinese medicine preparations, which improve the digestive organ function of the fish body, improve anti-stress ability and enhance immunity.
Effectively improve the growth performance of largemouth black bass and spotted fork-tailed juvenile fish, promote fish body growth, improve stress resistance and immunity, improve digestion and absorption capacity, and improve breeding economic benefits.
Smart Images
Figure BDA0005205742190000061 
Figure BDA0005205742190000071 
Figure BDA0005205742190000081
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of feed product preparation, and specifically relates to a composite functional feed additive and application thereof. Background Art
[0002] Largemouth bass and channel catfish are the main species with high economic benefits in special aquaculture. In the hot season, the temperature in the pond is too high, causing the fish to be in a state of heat stress. As the breeding time increases, the amount of residual bait and feces in the pond increases, leading to the deterioration of the bottom quality, causing a series of problems such as turbid water, increased ammonia nitrogen and hypochlorite, and blue algae blooms. These problems lead to poor digestion and absorption capacity of bass, reduced fish feed intake, reduced growth rate, and poor stress resistance, which seriously affects the economic benefits of breeding.
[0003] The technical means to improve the growth performance of juvenile largemouth bass and channel catfish can be achieved by adding substances that improve the function of digestive organs or enhancing the fish's tolerance to stress to the feed.
[0004] Therefore, it is very valuable to develop a compound feed that can effectively improve the growth performance of juvenile largemouth bass and channel catfish. Summary of the invention
[0005] The purpose of the present invention is to provide a composite functional feed additive to address the problems in the prior art. The composite functional feed additive can be used to effectively improve the growth performance of largemouth bass and channel catfish fry. The composite functional feed additive is prepared into a compound feed together with other raw materials, which can effectively improve the growth performance of largemouth bass and channel catfish fry, meet the nutritional needs of largemouth bass and channel catfish fry, and effectively promote largemouth bass feeding in high temperature seasons or severe weather conditions, improve stress resistance, and promote growth.
[0006] In order to realize the above technical solution, the specific technical solution of the present invention is:
[0007] The present application protects a composite functional feed additive, which comprises, by weight, 1-2 parts of Vc-phosphate, 1-2 parts of taurine, 1-2 parts of betaine, 0.4-0.5 parts of bile acid, 0.4-0.5 parts of manno-oligosaccharide, 0.1-0.2 parts of β-glucan, 0.4-0.5 parts of brewer's yeast cell wall, 1-2 parts of sodium butyrate, and 8-10 parts of a composite Chinese medicine preparation.
[0008] Furthermore, in the composite functional feed additive, the composite Chinese medicine preparation contains scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis root, white peony root, bupleurum, and gynostemma pentaphyllum; the mass ratio thereof is 2:3:2:2:2:1:3:3:2:3.
[0009] The present application also protects the use of the above-mentioned composite functional feed additive in effectively improving the growth performance of largemouth bass.
[0010] As a preferred method in the present application, the preparation method of the composite functional additive comprises the following steps:
[0011] (1) Preparation of composite Chinese medicine preparation: naturally air-dry scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis root, white peony root, bupleurum, and gynostemma pentaphyllum, weigh them according to proportion, ultrafinely grind them, and pass them through a 100-mesh sieve. Mix the sieved materials evenly with a micro mixer, and store them in a sealed container at room temperature for later use;
[0012] (2) Preparation of functional feed additives: Vc-phosphate, taurine, betaine, bile acid, manno-oligosaccharide, β-glucan, saccharomyces cerevisiae cell wall and sodium butyrate are weighed in proportion, and then these materials are mixed with the composite Chinese medicine preparation prepared in step (1) in a mixer, and the mixture is sealed and stored at room temperature to obtain the functional feed additive.
[0013] The present application also protects a compound feed for effectively improving the growth performance of largemouth bass and channel catfish fry, which contains the composite functional feed additive as described above or the composite functional feed additive prepared by the method described above.
[0014] Preferably, a compound feed that effectively improves the growth performance of largemouth bass and channel catfish fry contains the following raw materials in parts by weight: 4-5 parts of wheat flour, 10-15 parts of soybean meal, 3-5 parts of fermented soybean meal, 1-2 parts of gluten, 8-10 parts of chicken meal, 10-15 parts of domestic fish meal, 30-35 parts of imported fish meal, 1-2 parts of brewer's yeast hydrolyzate, 8-10 parts of cassava starch, 6-10 parts of soybean oil, 1-2 parts of monocalcium phosphate, 0.2-0.3 parts of choline chloride, 1-2 parts of vitamin premix, 1-2 parts of trace element premix, and 1-2 parts of composite functional feed additives.
[0015] Furthermore, in the compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish, each kilogram of the vitamin premix contains the following components by weight:
[0016] Vitamin A, 0.107g; Vitamin D3, 0.1g; Vitamin K3, 3.312g; Vitamin B1, 2.568g; Vitamin B2, 0.625g; Vitamin B6, 1.829g; Vitamin B12, 2.7g; Vitamin E, 5.6g; Vitamin C, 16.12g; Nicotinamide, 2.62g; Calcium pantothenate, 2.7g; Folic acid, 0.1g; Biotin, 0.3g; Inositol, 40.81g; The remainder is wheat flour.
[0017] Furthermore, in the compound feed for effectively improving the growth performance of largemouth bass and channel catfish fry, each kilogram of trace element premix includes the following components by weight:
[0018] 150g ferrous sulfate monohydrate, 40g copper sulfate pentahydrate, 100g zinc sulfate monohydrate, 150g manganese sulfate monohydrate, 20g sodium selenite, 20g potassium iodide, 520g stone powder.
[0019] As a preferred embodiment of the present application, the method for preparing the compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish comprises the following steps:
[0020] (1) preparing a vitamin premix: weighing raw materials of various components of the vitamin premix according to a proportion, and then mixing the various components of the vitamin premix in a mixer for 150-200 seconds to mix them evenly and set aside;
[0021] (2) Preparing a trace element premix: weighing the raw materials of each component of the trace element premix according to the proportion, and then mixing the components of the trace element premix in a mixer for 150-200 seconds to mix them evenly and set aside;
[0022] (3) Preparing compound feed: weighing each component except soybean oil according to a proportion, then crushing the raw materials and passing them through an 80-mesh sieve, and then mixing the crushed raw materials with the raw materials reserved in steps (1) and (2) in a mixer for 90-120 seconds, and tempering the mixed materials under a steam pressure of 0.35-0.45 MPa and a temperature of 95-98° C., and then extruding and puffing to granulate; finally, adding soybean oil through vacuum spraying, cooling, and packaging to obtain the compound feed.
[0023] Preferably, during extrusion puffing granulation, the puffing degree is controlled at 1.55-1.7.
[0024] Furthermore, the above-mentioned composite functional feed additive is used to effectively improve the growth performance of juvenile largemouth bass and channel catfish, and the growth performance includes but is not limited to at least one of promoting growth, resisting stress, enhancing body immunity and improving disease resistance.
[0025] Furthermore, the composite functional feed additive is combined with other raw materials to form a compound feed, and the compound feed is fed twice a day, with 1-3% of the fish body weight being fed each time.
[0026] Compared with the prior art, the functional additives of the present invention have the following advantages:
[0027] (1) The composite functional additive provided by the present invention has a simple processing technology and can be packaged independently, which is more conducive to the promotion and application of the invention.
[0028] (2) A composite Chinese medicine preparation is used in this composite functional feed additive. Chinese herbal medicine has multiple biological activities in fish and shrimp farming, such as anti-stress, growth promotion, appetite stimulation, immune stimulation and anti-pathogen. In addition, the use of Chinese medicine will not lead to the production of drug-resistant bacteria, nor will it remain in the muscles of commercial fish, and there is no potential threat to human health.
[0029] (3) Yeast cell wall components are used in this composite functional feed additive. It has no bitter taste and good palatability. It is used as an immunostimulant in this application to enhance the body's immunity and improve the health of animals so that animals can achieve their best growth potential. It can be used together with other materials on aquatic animals to improve the activity of the nonspecific immune system.
[0030] (4) Adding sodium butyrate to the composite functional feed additive can improve the intestinal morphology and structure together with other materials, promote the development of intestinal epithelial cells; improve the intestinal flora structure; stimulate the secretion of digestive enzymes, improve the digestion and absorption of nutrients, and thus promote the growth of fish. DETAILED DESCRIPTION
[0031] The present invention is further described below in conjunction with embodiments, which are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the scope of protection of the present invention.
[0032] The raw materials used in this application are all commercially available products.
[0033] In the following examples, each kilogram of the vitamin premix contains the following components by weight:
[0034] Vitamin A, 0.107g; Vitamin D3, 0.1g; Vitamin K3, 3.312g; Vitamin B1, 2.568g; Vitamin B2, 0.625g; Vitamin B6, 1.829g; Vitamin B12, 2.7g; Vitamin E, 5.6g; Vitamin C, 16.12g; Nicotinamide, 2.62g; Calcium pantothenate, 2.7g; Folic acid, 0.1g; Biotin, 0.3g; Inositol, 40.81g. Mix all ingredients with wheat flour to 1kg.
[0035] The trace element premix per kilogram comprises the following components by weight:
[0036] 150g ferrous sulfate monohydrate, 40g copper sulfate pentahydrate, 100g zinc sulfate monohydrate, 150g manganese sulfate monohydrate, 20g sodium selenite, 20g potassium iodide, 520g stone powder.
[0037] The composite functional feed additive comprises the following components in parts by weight:
[0038] 1.5 parts of Vc-phosphate, 1 part of taurine, 1 part of betaine, 0.4 parts of bile acid, 0.4 parts of manno-oligosaccharide, 0.2 parts of beta-glucan, 0.4 parts of brewer's yeast cell wall, 1.5 parts of sodium butyrate, and 8 parts of compound Chinese medicine preparation.
[0039] The preparation method of the composite functional feed additive comprises the following steps:
[0040] (1) Preparation of composite Chinese medicine preparation: naturally air-dry scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis root, white peony root, bupleurum, and gynostemma pentaphyllum, weigh them according to proportion, ultrafinely grind them, and pass them through a 100-mesh sieve. Mix the sieved materials evenly with a micro mixer, and store them in a sealed container at room temperature for later use;
[0041] (2) Preparation of functional feed additives: Vc-phosphate, taurine, betaine, bile acid, manno-oligosaccharide, β-glucan, saccharomyces cerevisiae cell wall and sodium butyrate are weighed in proportion, and then these materials are mixed with the composite Chinese medicine preparation prepared in step (1) in a mixer, and the mixture is sealed and stored at room temperature to obtain the functional feed additive.
[0042] The compound Chinese medicine preparation contains scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis root, white peony root, bupleurum, and gynostemma pentaphyllum; the mass ratio thereof is 2:3:2:2:2:1:3:3:2:3.
[0043] Embodiment 1:
[0044] A compound feed for effectively improving the growth performance of largemouth bass and channel catfish fry contains the following raw materials in parts by weight: 4.5 parts of wheat flour (1 part can be regarded as 1 kg, the same below), 13 parts of soybean meal, 13.4 parts of fermented soybean meal, 1 part of gluten, 8.4 parts of chicken meal, 12 parts of domestic fish meal, 35 parts of imported fish meal, 1.5 parts of yeast hydrolyzate (beer type), 8.5 parts of cassava starch, 6.8 parts of soybean oil, 1 part of vitamin premix, 1 part of trace element premix, 2 parts of monocalcium phosphate, 0.3 parts of choline chloride and 1 part of composite functional feed additive.
[0045] Preparation method of compound feed: crush soybean meal, fermented soybean meal, chicken meal, domestic fish meal and imported fish meal through an 80-mesh sieve for later use. Mix gluten powder, yeast hydrolyzate, cassava starch, choline chloride, vitamin premix, trace element premix and calcium dihydrogen phosphate with the crushed raw materials, and extrude and granulate them after conditioning, with a particle size of 6mm. Send the expanded particles into a drying oven, and control the moisture content to about 10%. Finally, use a vacuum spraying method to evenly add soybean oil to the dried expanded pellet feed, and package it after cooling.
[0046] The feed of the present invention was compared with the expanded feed of largemouth black sea bass of Tieqi Lishi. Sea bass with an average weight of 255g / tail were selected and randomly divided into 6 cages, 45 tails in each cage, and 3 repetitions were set for each treatment group. The control group was fed with Tieqi Lishi sea bass feed (provided by Chengdu Tieqi Lishi Feed Co., Ltd.), and the test group was fed with the expanded feed of sea bass of Example 1 of the present invention. Feed twice a day (6:30, 19:30), each time feeding 1-1.5% of the fish body weight of feed, for 35 days. Test water conditions: water temperature 28-30℃, pH 7.0-8.5, dissolved oxygen concentration ≥5.0mg / L, ammonia nitrogen concentration ≤0.5mg / L, nitrite concentration <0.05mg / L. After the animal experiment, fast for 24h, filter water and weigh and count each box. Specific results are shown in Table 1.
[0047] Table 1 Growth indexes of largemouth bass
[0048]
[0049] As shown in Table 1, the final body weight, body weight gain, weight gain rate and specific growth rate of sea bass in the experimental group were significantly higher than those in the control group, and the feed coefficient of the experimental group was significantly reduced.
[0050] Embodiment 2:
[0051] A compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish contains the following raw materials in parts by weight: 6 parts of wheat flour, 3 parts of soybean meal, 3 parts of fermented soybean meal, 2 parts of soybean protein concentrate, 28 parts of domestic fish meal, 16 parts of imported fish meal, 6 parts of chicken meal, 6 parts of pork meal, 1 part of gluten powder, 4 parts of intestinal membrane protein powder, 1.5 parts of yeast hydrolyzate, 8 parts of cassava starch, 8 parts of soybean oil, 1 part of vitamin premix, 1 part of trace element premix, 1.5 parts of monocalcium phosphate, 0.3 parts of choline chloride and 1 part of composite functional feed additive.
[0052] Preparation method of compound feed: crush soybean meal, fermented soybean meal, chicken meal, pork meal, domestic fish meal, imported fish meal, and intestinal membrane protein powder and pass through an 80-mesh sieve for later use. Mix gluten powder, yeast hydrolyzate, cassava starch, choline chloride, vitamin premix, trace element premix, and composite functional feed additives with the crushed raw materials, and extrude and granulate them after conditioning, with a particle size of 6mm. Send the expanded particles into a drying oven, and control the moisture content to about 10%. Finally, use a vacuum spraying method to evenly add soybean oil to the dried expanded pellet feed, and package it after cooling.
[0053] The feed of the present invention was compared with the expanded feed of largemouth black sea bass of Tieqi Lishi. Sea bass with an average weight of 144g / tail were selected and randomly divided into 6 cages, 40 tails in each cage, and 3 repetitions were set for each treatment group. The control group was fed with Tieqi Lishi sea bass feed (provided by Chengdu Tieqi Lishi Feed Co., Ltd.), and the test group was fed with the expanded feed of sea bass of Example 2 of the present invention. Feed twice a day (6:30, 19:30), 1-1.5% of the fish body weight feed each time, for 45 days. Test water conditions: water temperature 28-30℃, pH 7.0-8.5, dissolved oxygen concentration ≥5.0mg / L, ammonia nitrogen concentration ≤1.0mg / L, nitrite concentration <0.08mg / L. After the animal experiment, fast for 24h, filter water and weigh and count each box. Specific results are shown in Table 2.
[0054] Table 2 Growth indexes of largemouth bass
[0055]
[0056] As shown in Table 2, the weight gain of sea bass in the experimental group was significantly higher than that in the control group, and the feed coefficient of the experimental group was significantly reduced.
[0057] Embodiment 3:
[0058] A compound feed for effectively improving the growth performance of largemouth bass and channel catfish fry contains the following raw materials in parts by weight: 18 parts of wheat flour, 33 parts of soybean meal, 3 parts of fermented soybean meal, 3 parts of cottonseed meal, 1 part of corn gluten meal, 4 parts of domestic fish meal, 6.4 parts of chicken meal, 6.8 parts of pork meal, 6 parts of intestinal membrane protein powder, 1 part of yeast hydrolyzate, 2 parts of nucleotide residues, 8 parts of soybean oil, 3 parts of crispy meat residues, 1 part of vitamin premix, 1 part of trace element premix, 2 parts of monocalcium phosphate, and 1 part of composite functional feed additive.
[0059] Preparation method of compound feed: crush soybean meal, fermented soybean meal, cottonseed meal, corn protein powder, chicken meal, pork meal, domestic fish meal, intestinal membrane protein powder, and crispy meat residue and pass through an 80-mesh sieve for later use. Mix wheat flour, yeast hydrolyzate, nucleotide residue, vitamin premix, trace element premix, and composite functional feed additives with the crushed raw materials, and extrude and granulate them after conditioning, with a particle size of 3mm. Send the expanded particles into a drying oven, and control the moisture content to about 10%. Finally, use a vacuum spraying method to evenly add soybean oil to the dried expanded granular feed, and package it after cooling.
[0060] The feed of the present invention was compared with the expanded feed of channel catfish of Tieqi Lishi. Channel catfish with an average weight of 255g / tail were selected and randomly divided into 6 net cages, 40 tails in each net cage, and 3 repetitions were set for each treatment group. The control group was fed with expanded feed of channel catfish of Tieqi Lishi (provided by Chengdu Tieqi Lishi Feed Co., Ltd.), and the test group was fed with expanded feed of channel catfish of Example 3 of the present invention. Feed twice a day (6:30, 19:30), each time feeding 1-2% of the feed of the fish body weight, for 45 days. Test water conditions: water temperature 28-30°C, pH 7.0-8.5, dissolved oxygen concentration ≥5.0mg / L, ammonia nitrogen concentration ≤0.8mg / L, nitrite concentration ≤0.08mg / L. After the animal experiment, fast for 48h, filter water and weigh each box, and count. Specific results are shown in Table 3.
[0061] Table 3 Growth performance of channel catfish
[0062]
[0063]
[0064] As shown in Table 3, the bait coefficient of channel catfish in the experimental group was significantly reduced.
[0065] Embodiment 4:
[0066] A compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish contains the following raw materials in parts by weight: 17.8 parts of wheat flour, 38.3 parts of soybean meal, 3 parts of fermented soybean meal, 1.7 parts of cottonseed meal, 2 parts of full-fat rice bran, 7 parts of domestic fish meal, 3 parts of chicken meal, 6.5 parts of pork meal, 1.5 parts of yeast hydrolyzate, 6 parts of soybean oil, 1 part of vitamin premix, 1 part of trace element premix, 2 parts of monocalcium phosphate, and 1 part of a composite functional feed additive.
[0067] Preparation method of compound feed: crush soybean meal, fermented soybean meal, full-fat rice bran, cottonseed meal, chicken meal, pork meal, and domestic fish meal, and pass through an 80-mesh sieve for later use. Mix wheat flour, yeast hydrolyzate, calcium dihydrogen phosphate, vitamin premix, trace element premix, and composite functional feed additives with the crushed raw materials, and extrude and granulate them after conditioning, with a particle size of 3mm. Send the expanded particles into a drying oven, and control the moisture content to about 10%. Finally, use a vacuum spraying method to evenly add soybean oil to the dried expanded pellet feed, and package it after cooling.
[0068] The feed of the present invention was compared with the expanded feed of channel catfish of Tieqi Lishi. Channel catfish with an average weight of 280g / tail were selected and randomly divided into 6 net cages, 40 tails in each net cage, and 3 repetitions were set for each treatment group. The control group was fed with expanded feed of channel catfish of Tieqi Lishi (provided by Chengdu Tieqi Lishi Feed Co., Ltd.), and the test group was fed with expanded feed of channel catfish of Example 4 of the present invention. Feed twice a day (6:30, 19:30), each time feeding 1-2% of the feed of the fish body weight, for 45 days. Test water conditions: water temperature 28-32°C, pH value 7.0-8.5, dissolved oxygen concentration ≥8.0mg / L, ammonia nitrogen concentration ≤0.2mg / L, nitrite concentration ≤0.02mg / L. After the animal experiment, fast for 48h, filter water and weigh each box, and count. Specific results are shown in Table 4.
[0069] Table 4 Growth performance of channel catfish
[0070]
[0071] As shown in Table 4, the final body weight, body weight gain and specific growth rate of channel catfish in the experimental group were significantly increased, and the feed coefficient was significantly reduced.
[0072] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. A person skilled in the art will understand that many changes, modifications and even equivalent changes may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.
Claims
1. A composite functional feed additive, characterized in that: The composite functional feed additive comprises, by weight, 1-2 parts of Vc-phosphate, 1-2 parts of taurine, 1-2 parts of betaine, 0.4-0.5 parts of bile acid, 0.4-0.5 parts of manno-oligosaccharide, 0.1-0.2 parts of beta-glucan, 0.4-0.5 parts of brewer's yeast cell wall, 1-2 parts of sodium butyrate, and 8-10 parts of composite Chinese medicine preparation; the composite Chinese medicine preparation contains scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis indigotica, white peony root, bupleurum, and gynostemma pentaphyllum; and the mass ratio thereof is 2:3:2:2:2:1:3:3:2:
3.
2. Use of the composite functional feed additive as claimed in claim 1 in effectively improving the growth performance of juvenile largemouth bass and channel catfish.
3. The method for preparing the composite functional feed additive according to claim 1, characterized in that The following steps are involved: (1) Preparation of composite Chinese medicine preparation: naturally air-dry scutellaria baicalensis, rhubarb, phellodendron, astragalus, isatis indigotica, houttuynia cordata, isatis root, white peony root, bupleurum, and gynostemma pentaphyllum, weigh them according to proportion, ultrafinely grind them, and pass them through a 100-mesh sieve. Mix the sieved materials evenly with a micro mixer, and store them in a sealed container at room temperature for later use; (2) Preparation of functional feed additives: Vc-phosphate, taurine, betaine, bile acid, manno-oligosaccharide, β-glucan, saccharomyces cerevisiae cell wall and sodium butyrate are weighed in proportion, and then these materials are mixed with the composite Chinese medicine preparation prepared in step (1) in a mixer to obtain a functional feed additive, and then sealed and stored at room temperature.
4. The use of the composite functional feed additive as claimed in claim 2 in effectively improving the growth performance of juvenile largemouth bass and channel catfish, characterized in that: The growth performance includes but is not limited to at least one of anti-stress, growth promotion, enhancement of body immunity and anti-pathogen.
5. A compound feed for effectively improving the growth performance of largemouth bass and channel catfish fry, characterized in that Contains the composite functional feed additive according to claim 1 or the composite functional feed additive prepared by the method according to claim 3.
6. The compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish as claimed in claim 5, characterized in that: The compound feed contains the following raw materials in parts by weight: 4-5 parts of wheat flour, 10-15 parts of soybean meal, 3-5 parts of fermented soybean meal, 1-2 parts of gluten, 8-10 parts of chicken meal, 10-15 parts of domestic fish meal, 30-35 parts of imported fish meal, 1-2 parts of beer yeast hydrolyzate, 8-10 parts of cassava starch, 6-10 parts of soybean oil, 1-2 parts of monocalcium phosphate, 0.2-0.3 parts of choline chloride, 1-2 parts of vitamin premix, 1-2 parts of trace element premix and 1-2 parts of composite functional feed additive.
7. The compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish according to claim 6, characterized in that: Each kilogram of vitamin premix contains the following components by weight: Vitamin A, 0.107g; Vitamin D3, 0.1g; Vitamin K3, 3.312g; Vitamin B1, 2.568g; Vitamin B2, 0.625g; Vitamin B6, 1.829g; Vitamin B12, 2.7g; Vitamin E, 5.6g; Vitamin C, 16.12g; Nicotinamide, 2.62g; Calcium pantothenate, 2.7g; Folic acid, 0.1g; Biotin, 0.3g; Inositol, 40.81g; The balance is wheat flour; Each kilogram of trace element premix includes the following components by weight: 150g ferrous sulfate monohydrate, 40g copper sulfate pentahydrate, 100g zinc sulfate monohydrate, 150g manganese sulfate monohydrate, 20g sodium selenite, 20g potassium iodide, 520g stone powder.
8. The method for preparing a compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish according to claim 6, characterized in that The following steps are involved: (1) preparing a vitamin premix: weighing raw materials of various components of the vitamin premix according to a proportion, and then mixing the various components of the vitamin premix in a mixer for 150-200 seconds to mix them evenly and set aside; (2) Preparing a trace element premix: weighing the raw materials of each component of the trace element premix according to the proportion, and then mixing the components of the trace element premix in a mixer for 150-200 seconds to mix them evenly and set aside; (3) Preparing compound feed: weighing each component except soybean oil according to a proportion, then crushing the raw materials and passing them through an 80-mesh sieve, and then mixing the crushed raw materials with the raw materials prepared in steps (1) and (2) in a mixer for 90-120 seconds, and tempering the mixed materials under a steam pressure of 0.35-0.45 MPa and a temperature of 95-98° C., and then extruding and puffing to granulate; finally, adding soybean oil through vacuum spraying, cooling, and packaging to obtain the compound feed.
9. The method for preparing a compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish as claimed in claim 8, characterized in that: During extrusion granulation, the expansion degree is controlled at 1.55-1.
7.
10. A compound feed for effectively improving the growth performance of juvenile largemouth bass and channel catfish obtained by the method according to any one of claims 5 to 9, characterized in that: The feeding amount of compound feed is twice a day, 1-3% of the fish body weight each time.