CN104872457A - Mixed feed for improving streptococcus resistance of tilapia - Google Patents
Mixed feed for improving streptococcus resistance of tilapia Download PDFInfo
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Abstract
The invention relates to mixed feed for improving the streptococcus resistance of tilapia, and belongs to the technical field of fish feed. The mixed feed comprises fish meal, bean pulp, double-low rape seeds, DDGS, strong flour, degossypolized cottonseed protein, wheat bran, prickly ash seeds, soybean phosphatide oil, soybean oil, methionine, levan, vitamin premix, microelement premix, vitamin C phosphate, calcium dihydrogenphosphat, mildew preventive, choline chloride and vitamin E. According to the feed, the nutrition requirement of the tilapia is taken into full consideration, the levels of protein, energy and other nutrients of the feed are scientifically adjusted, and the feed utilization rate is improved for the tilapia. The vitamin E and the levan are added to the feed and cooperate with other raw materials so that the nonspecific immunity of the tilapia can be improved, and therefore the streptococcus resistance of the tilapia is improved. The morbidity and mortality of the diseases caused by streptococcus of tilapia are reduced, and economic loss caused by the diseases caused by streptococcus of tilapia is reduced.
Description
Technical field
The present invention relates to the mixed feed of a kind of aquatic livestock, more particularly, the present invention relates to a kind of mixed feed improving Tilapia mossambica streptococcus ability, belong to fish meal technical field.
Background technology
Tilapia mossambica (
oreochromismossambicus) belong to Perciformes, Callichthyidae, Tilapia mossambica genus, there is the features such as growth is fast, output is high, feeding habits are assorted, it is fish culture kind important in the world, one of aquaculture kind that Ye Shi China is main simultaneously, to introduce in China behind ground from nineteen fifty-seven by Vietnam, the Tilapia mossambica aquaculture of China is fast-developing, and within 2014, national Tilapia mossambica output has reached 1,550,000 tons, occupy first place, the world.
The three-dimensional cultures such as the Tilapia mossambica aquaculture model of the main culturing areas of Tilapia mossambica such as current western district of Guangdong (Yangjiang, Maoming, Zhanjiang) is still raised together with based on fish pig, fish duck is raised together with, and continuing to increase along with cultivation density and feeding volume, the cultivation water environment of Tilapia mossambica goes from bad to worse, Tilapia mossambica disease especially streptococcosis is day by day serious, and raiser suffers heavy losses.From the streptococcosis incidence of sheet area, south China in 2014 Tilapia mossambica, the Maoming City Tilapia mossambica streptococcosis incidence of disease reaches 80%-90%, the death rate is more than 80%, and the M & M in area, Pearl River Delta, all at 40-50%, causes great economic loss to raiser.
Can use a large amount of antibiotic and chemicals in traditional disease prevention and cure method, this can cause the series of problems such as the resistance to the action of a drug and food security, should stop this method gradually.Therefore be badly in need of the feed of a kind of nutrition of exploitation, safe improved Tilapia mossambica streptococcus ability, to reduce the economic loss of raiser, promote the sustainable and healthy development of China's Tilapia mossambica aquaculture.
It is CN101971928A that State Intellectual Property Office discloses a publication number in 2011.2.16, the invention that name is called " a kind of artifical compound feed with prevention Tilapia mossambica streptococcosis function ", this invention relates to a kind of tilapia feed, particularly relates to a kind of Tilapia mossambica artifical compound feed.A kind of artifical compound feed with prevention Tilapia mossambica streptococcosis function, calculate by percentage to the quality, comprise fish meal 5-10%, dregs of beans 20-30%, dish dregs of rice 20-30%, cotton dregs 10-15%, DDGS (maize alcohol lees and the dry thing of raffinate): 10-15%, rice bran 5-10%, flour 15-20%, corn 5-10%, soya-bean oil 1-2%, phosphatide oil 0.5-1.5%, calcium monohydrogen phosphate 1-2%, bentonite 1-10%, multidimensional many ore deposits pre-composition 0.5-1%, Choline Chloride 0.1-0.5%, antioxidant 0.01-0.05%, mould inhibitor 0.1-0.5%, compound Chinese medicine additive 1-5%.Add multiple antibacterial Chinese herbal medicines additive in this invention feed, improve the antibacterial ability of Tilapia mossambica, the generation of Tilapia mossambica streptococcosis can be prevented.
It is CN103750030A that State Intellectual Property Office discloses a publication number in 2014.4.30, name is called the invention of " a kind of nutrient enrichment fodder improving the anti-Streptococcusagalactiae ability of juvenile tilapia ", a kind of nutrient enrichment fodder improving the anti-Streptococcusagalactiae ability of juvenile tilapia of this disclosure of the invention.The nutrition composition of tilapia feed of the present invention is as follows according to mass percentage: protein sources raw material 25-40, fat source raw material 3-10, sugar source raw material 30-55, B B-complex 0-3.5, composite mineral salt 0-3.5, antioxidant 0-0.5, adhesive 0-5, cellulose 0-15, glycine 0-3.0, arginine 0-3.0.This invention tilapia feed can meet the nutritional need that Tilapia mossambica body maintains best immune state, effectively can improve the ability of the anti-Streptococcusagalactiae of juvenile tilapia.This invention not only can reduce the incidence of disease in Tilapia mossambica breeding process, the effect improving industrial profit can also be played, feed good palatability of the present invention simultaneously, medicament residue problem is there is not after Tilapia mossambica picked-up, meet the requirement of green health aquatic products, significant for the sustainable development realizing Tilapia mossambica aquaculture.
Above-mentioned two sections of prior aries are improved the resistance against diseases of Tilapia mossambica by Chinese herbal medicine and functional amino respectively.
Summary of the invention
The present invention is intended to solve the series of problems such as the resistance to the action of a drug that uses a large amount of antibiotic and chemicals to cause and food security, a kind of mixed feed improving Tilapia mossambica streptococcus ability is provided, this feed does not use antibiotic and chemicals, preparation is simple, nutrient balance, Growth Op Tilapia needs can be met, and Tilapia mossambica streptococcus ability can be improved, reduce the M & M in breeding process, improve raiser's economic benefit, promote the sustainable and healthy development of China's Tilapia mossambica industry.
For solving the problems of the technologies described above, concrete technical scheme of the present invention is as follows:
Improve a mixed feed for Tilapia mossambica streptococcus ability, it is characterized in that: comprise the following raw material according to weight parts:
Fish meal 3-15 part, dregs of beans 15-40 part, double-low rapeseed meal 5-25 part, DDGS 5-15 part, Strong flour 15-30 part, dephenolization cottonseed protein 3-10 part, wheat bran 5-10 part, wild pepper seed 1-5 part, soyabean lecithin oil 0.5-1 part, soya-bean oil 0.5-3.5 part, methionine 0.1-0.5 part, levulan 0.1-0.3 part, vitamin premix 0.1-0.5 part, microelement pre-mix material 0.5-2.5 part, vitamin C phosphoric ester 0.2-0.5 part, calcium dihydrogen phosphate 1-3 part, mould inhibitor 0.01-0.05 part, Choline Chloride 0.05-0.2 part, vitamin E 0.01-0.05 part.
In above-mentioned basic technical scheme, described levulan, vitamin premix, microelement pre-mix material and mould inhibitor all use this area conventional products.Preferably, can adopt:
The levulan pulvis that described levulan provides for Jiangmen quantum high-tech group.
The F21V omnivorefish vitamin premix that described vitamin premix provides for Guangdong Tongwei Feed Co., Ltd..
The F29M omnivorefish microelement pre-mix material that described microelement pre-mix material provides for Guangdong Tongwei Feed Co., Ltd..
Described mould inhibitor is " mould must gram " mould inhibitor that Guilin Wankang Biotechnology Co., Ltd. produces.
Preferably, a kind of mixed feed improving Tilapia mossambica streptococcus ability of the present invention, is characterized in that: comprise the following raw material according to weight parts:
Fish meal 5-10 part, dregs of beans 20-30 part, double-low rapeseed meal 10-20 part, DDGS 5-10 part, Strong flour 15-20 part, dephenolization cottonseed protein 5-8 part, wheat bran 4-8 part, wild pepper seed 2-4 part, soyabean lecithin oil 0.5-1 part, soya-bean oil 1.0-3.5 part, methionine 0.1-0.5 part, levulan 0.1-0.3 part, vitamin premix 0.2-0.5 part, microelement pre-mix material 1.0-2.5 part, vitamin C phosphoric ester 0.3-0.5 part, calcium dihydrogen phosphate 2-3 part, mould inhibitor 0.01-0.05 part, Choline Chloride 0.1-0.2 part, vitamin E 0.03-0.05 part.
Fish meal of the present invention is the fish meal of crude protein content 60%.
The Advantageous Effects that the present invention brings:
1, feed of the present invention solves the series of problems such as the resistance to the action of a drug that uses a large amount of antibiotic and chemicals to cause and food security, take into full account the nutritional need of Tilapia mossambica, scientifically adjust the level of the nutrients such as the albumen of feed, energy, improve Tilapia mossambica to the utilization rate of feed.Vitamin E and levulan is with the addition of in feed, coordinate other raw materials, fish body non-specific immunity can be improved, thus improve fish body streptococcus ability, reduce Tilapia mossambica streptococcosis M & M, thus the economic loss that minimizing Tilapia mossambica streptococcosis is brought.
2, with the addition of wild pepper seed in tilapia feed of the present invention, wild pepper seed is rich in crude protein, unrighted acid, multivitamin and mineral matter, is a kind of raw material of super quality and competitive price, and has special spicy fragrance, can improve the attractant of feed.
3, feedstuff provided by the invention forms simply and easily obtains, and cultivation income is high, is conducive to spread and uses.
Detailed description of the invention
embodiment 1
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 3 parts, dregs of beans 15 parts, double-low rapeseed meal 5 parts, DDGS 5 parts, Strong flour 15 parts, dephenolization cottonseed protein 3 parts, wheat bran 5 parts, wild pepper seed 1 part, soyabean lecithin oil 0.5 part, 0.5 part, soya-bean oil, methionine 0.1 part, levulan 0.1 part, vitamin premix 0.1 part, microelement pre-mix material 0.5 part, vitamin C phosphoric ester 0.2 part, calcium dihydrogen phosphate 1 part, mould inhibitor 0.01 part, Choline Chloride 0.05 part, vitamin E 0.01 part.
embodiment 2
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 15 parts, dregs of beans 40 parts, double-low rapeseed meal 25 parts, DDGS 15 parts, Strong flour 30 parts, dephenolization cottonseed protein 10 parts, wheat bran 10 parts, wild pepper seed 5 parts, soyabean lecithin oil 1 part, 3.5 parts, soya-bean oil, methionine 0.5 part, levulan 0.3 part, vitamin premix 0.5 part, microelement pre-mix material 2.5 parts, vitamin C phosphoric ester 0.5 part, calcium dihydrogen phosphate 3 parts, mould inhibitor 0.05 part, Choline Chloride 0.2 part, vitamin E 0.05 part.
embodiment 3
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 9 parts, dregs of beans 28 parts, double-low rapeseed meal 15 parts, DDGS 10 parts, Strong flour 23 parts, dephenolization cottonseed protein 7 parts, wheat bran 8 parts, wild pepper seed 3 parts, soyabean lecithin oil 0.75 part, 2 parts, soya-bean oil, methionine 0.3 part, levulan 0.2 part, vitamin premix 0.3 part, microelement pre-mix material 1.5 parts, vitamin C phosphoric ester 0.35 part, calcium dihydrogen phosphate 2 parts, mould inhibitor 0.03 part, Choline Chloride 0.125 part, vitamin E 0.03 part.
embodiment 4
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 11 parts, dregs of beans 35 parts, double-low rapeseed meal 21 parts, DDGS 12 parts, Strong flour 21 parts, dephenolization cottonseed protein 4 parts, wheat bran 6 parts, wild pepper seed 2 parts, soyabean lecithin oil 0.8 part, 3 parts, soya-bean oil, methionine 0.45 part, levulan 0.15 part, vitamin premix 0.2 part, microelement pre-mix material 0.8 part, vitamin C phosphoric ester 0.4 part, calcium dihydrogen phosphate 2.5 parts, mould inhibitor 0.02 part, Choline Chloride 0.07 part, vitamin E 0.04 part.
embodiment 5
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 5 parts, dregs of beans 20 parts, double-low rapeseed meal 10 parts, DDGS 5 parts, Strong flour 15 parts, dephenolization cottonseed protein 5 parts, wheat bran 4 parts, wild pepper seed 2 parts, soyabean lecithin oil 0.5 part, 1.0 parts, soya-bean oil, methionine 0.1 part, levulan 0.1 part, vitamin premix 0.2 part, microelement pre-mix material 1.0 parts, vitamin C phosphoric ester 0.3 part, calcium dihydrogen phosphate 2 parts, mould inhibitor 0.01 part, Choline Chloride 0.1 part, vitamin E 0.03 part.
embodiment 6
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 10 parts, dregs of beans 30 parts, double-low rapeseed meal 20 parts, DDGS 10 parts, Strong flour 20 parts, dephenolization cottonseed protein 8 parts, wheat bran 8 parts, wild pepper seed 4 parts, soyabean lecithin oil 1 part, 3.5 parts, soya-bean oil, methionine 0.5 part, levulan 0.3 part, vitamin premix 0.5 part, microelement pre-mix material 2.5 parts, vitamin C phosphoric ester 0.5 part, calcium dihydrogen phosphate 3 parts, mould inhibitor 0.05 part, Choline Chloride 0.2 part, vitamin E 0.05 part.
embodiment 7
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 8 parts, dregs of beans 25 parts, double-low rapeseed meal 15 parts, DDGS 8 parts, Strong flour 18 parts, dephenolization cottonseed protein 7 parts, wheat bran 6 parts, wild pepper seed 3 parts, soyabean lecithin oil 0.75 part, 2.3 parts, soya-bean oil, methionine 0.3 part, levulan 0.2 part, vitamin premix 0.35 part, microelement pre-mix material 1.8 parts, vitamin C phosphoric ester 0.4 part, calcium dihydrogen phosphate 2.5 parts, mould inhibitor 0.03 part, Choline Chloride 0.15 part, vitamin E 0.04 part.
embodiment 8
Improve a mixed feed for Tilapia mossambica streptococcus ability, comprise the following raw material according to weight parts:
Fish meal 7 parts, dregs of beans 21 parts, double-low rapeseed meal 19 parts, DDGS 6 parts, Strong flour 17 parts, dephenolization cottonseed protein 6 parts, wheat bran 5 parts, wild pepper seed 3.5 parts, soyabean lecithin oil 0.6 part, 3 parts, soya-bean oil, methionine 0.4 part, levulan 0.15 part, vitamin premix 0.3 part, microelement pre-mix material 2 parts, vitamin C phosphoric ester 0.45 part, calcium dihydrogen phosphate 2.2 parts, mould inhibitor 0.02 part, Choline Chloride 0.12 part, vitamin E 0.035 part.
embodiment 9
A kind of feed improving Tilapia mossambica streptococcus ability provided by the invention is made up of the component of following mass number: domestic fish meal (crude protein content is 60%) 9kg, dregs of beans 25kg, double-low rapeseed meal 18kg, DDGS10kg, dephenolization cottonseed protein 5kg, Strong flour 16.26kg, wild pepper seed 2kg, wheat bran 8kg, soyabean lecithin oil 0.5kg, soya-bean oil 1 kg, methionine 0.1kg, levulan 0.3kg, vitamin premix 0.3kg, microelement pre-mix material 2kg, vitamin C phosphoric ester 0.3kg, calcium dihydrogen phosphate 2kg, mould inhibitor (" mould must gram " mould inhibitor that Guilin Wankang Biotechnology Co., Ltd. produces) 0.01kg, Choline Chloride 0. 2kg, vitamin E 0.03kg.
embodiment 10
A kind of feed improving Tilapia mossambica streptococcus ability provided by the invention is made up of the component of following mass number: domestic fish meal (crude protein content is 60%) 8kg, dregs of beans 27kg, double-low rapeseed meal 18kg, DDGS9.5kg, dephenolization cottonseed protein 5kg, Strong flour 16.16kg, wild pepper seed 2kg, wheat bran 7kg, soyabean lecithin oil 0.6kg, soya-bean oil 1.5 kg, methionine 0.1kg, levulan 0.3kg, vitamin premix 0.3kg, microelement pre-mix material 2kg, vitamin C phosphoric ester 0.3kg, calcium dihydrogen phosphate 2kg, mould inhibitor (" mould must gram " mould inhibitor that Guilin Wankang Biotechnology Co., Ltd. produces) 0.01kg, Choline Chloride 0. 2kg, vitamin E 0.03kg.
embodiment 11
A kind of feed improving Tilapia mossambica streptococcus ability provided by the invention is made up of the component of following mass number: domestic fish meal (crude protein content is 60%) 5kg, dregs of beans 28kg, double-low rapeseed meal 16.5kg, DDGS8kg, dephenolization cottonseed protein 8kg, Strong flour 16.44kg, wild pepper seed 3kg, wheat bran 6kg, soyabean lecithin oil 0.7kg, soya-bean oil 2kg, methionine 0.15kg, levulan 0.2kg, vitamin premix 0.4kg, microelement pre-mix material 2.5kg, vitamin C phosphoric ester 0.4kg, calcium dihydrogen phosphate 2.5kg, mould inhibitor (" mould must gram " mould inhibitor that Guilin Wankang Biotechnology Co., Ltd. produces) 0.03kg, Choline Chloride 0. 15kg, vitamin E 0.03kg.
embodiment 12
A kind of feed improving Tilapia mossambica streptococcus ability provided by the invention is made up of the component of following mass number: domestic fish meal (crude protein content is 60%) 5kg, dregs of beans 28.5kg, double-low rapeseed meal 16kg, DDGS8.5kg, dephenolization cottonseed protein 8kg, Strong flour 16.68kg, wild pepper seed 4kg, wheat bran 4kg, soyabean lecithin oil 0.8kg, soya-bean oil 2kg, methionine 0.2kg, levulan 0.2kg, vitamin premix 0.4kg, microelement pre-mix material 2.5kg, vitamin C phosphoric ester 0.5kg, calcium dihydrogen phosphate 2.5kg, mould inhibitor (" mould must gram " mould inhibitor that Guilin Wankang Biotechnology Co., Ltd. produces) 0.03kg, Choline Chloride 0. 15kg, vitamin E 0.04kg.
embodiment 13
In embodiment 9 to 12, any one group of preparation method improving Tilapia mossambica streptococcus ability feed is: carry out Primary batching system and mixed once by after above-mentioned raw materials precise, once pulverize through pulverizer after mixing, carry out second batch and secondary mixing again, after mixing, carry out ultramicro grinding (90% by 80 eye mesh screens) through micronizer again.Undertaken modulating (refining temperature 80-98 DEG C) by modem after ultramicro grinding, cool after appropriateness oven dry (bake out temperature 55-70 DEG C) after feed slaking, pack.
In order to effect of the present invention and effect are better described, provide the feed of the raising Tilapia mossambica streptococcus ability provided in embodiment 9 below to the culture experiment of Tilapia mossambica.
Culture experiment:
Cultivation contrast experiment is carried out in the tilapia feed adopting on market two kinds of good raisers of public praise to commonly use and this technological invention, by mixed feed of the present invention and two kinds of market business feeds respectively label be 1#, 2# and 3#, this test is carried out in the net cage of 9 2*1.5*1.5m, test totally 3 processed group, establish 3 repetitions respectively, eachly repeat the Tilapia mossambica putting 40 tail 50 ± 2g/ tails in a suitable place to breed, the culture-cycle is 6 weeks.After culture experiment terminates, 5 tail fishes are got in each repetition at random, take a blood sample in tail vein place with syringe, go to rapidly in 2mL sterile centrifugation tube, left at room temperature is centrifugal 10min(4 DEG C, 3000r/min after its blood coagulation), collect serum and be stored in ﹣ 80 DEG C of ultra low temperature freezers, for the mensuration of sero-immunity index.Often organize in addition and get 25 tail fishes at random and carry out streptococcus and attack malicious infection experiment: every tail fish lumbar injection 0.1mL concentration is the living bacterial liquid of the Streptococcusagalactiae of 1.0 × 109cfu/mL, the death rate of statistical test fish after one week, and from dying fish disease stove inoculated bacteria, whether qualification fish dies from streptococcosis.Experimental result is as follows:
Table 1 Tilapia mossambica sero-immunity Indexs measure result
Note: the different lowercase alphabet of subscript of going together in table 1 show significant difference (
p<0.05).
As can be seen from Table 1, the lysozyme of 1# group, superoxide dismutase activity be all significantly higher than 2# group and 3# group (
p<0.05); The mda content of 1# group significantly lower than 2# group and 3# group (
p<0.05).
Table 2 Tilapia mossambica challenge viral dosage result
As can be seen from Table 2, the death rate of 1# group is well below 2#, 3# group.
As can be seen here, the tilapia feed prepared according to the present embodiment 9 is fed Tilapia mossambica, can significantly improve Tilapia mossambica streptococcus ability, reduce Tilapia mossambica infect streptococcus after the death rate.
Claims (3)
1. improve a mixed feed for Tilapia mossambica streptococcus ability, it is characterized in that: comprise the following raw material according to weight parts:
Fish meal 3-15 part, dregs of beans 15-40 part, double-low rapeseed meal 5-25 part, DDGS 5-15 part, Strong flour 15-30 part, dephenolization cottonseed protein 3-10 part, wheat bran 5-10 part, wild pepper seed 1-5 part, soyabean lecithin oil 0.5-1 part, soya-bean oil 0.5-3.5 part, methionine 0.1-0.5 part, levulan 0.1-0.3 part, vitamin premix 0.1-0.5 part, microelement pre-mix material 0.5-2.5 part, vitamin C phosphoric ester 0.2-0.5 part, calcium dihydrogen phosphate 1-3 part, mould inhibitor 0.01-0.05 part, Choline Chloride 0.05-0.2 part, vitamin E 0.01-0.05 part.
2. a kind of mixed feed improving Tilapia mossambica streptococcus ability according to claim 1, is characterized in that: comprise the following raw material according to weight parts:
Fish meal 5-10 part, dregs of beans 20-30 part, double-low rapeseed meal 10-20 part, DDGS 5-10 part, Strong flour 15-20 part, dephenolization cottonseed protein 5-8 part, wheat bran 4-8 part, wild pepper seed 2-4 part, soyabean lecithin oil 0.5-1 part, soya-bean oil 1.0-3.5 part, methionine 0.1-0.5 part, levulan 0.1-0.3 part, vitamin premix 0.2-0.5 part, microelement pre-mix material 1.0-2.5 part, vitamin C phosphoric ester 0.3-0.5 part, calcium dihydrogen phosphate 2-3 part, mould inhibitor 0.01-0.05 part, Choline Chloride 0.1-0.2 part, vitamin E 0.03-0.05 part.
3. a kind of mixed feed improving Tilapia mossambica streptococcus ability according to claim 1 and 2, is characterized in that: described fish meal is the fish meal of crude protein content 60%.
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| CN105076713A (en) * | 2015-09-30 | 2015-11-25 | 通威股份有限公司 | Composite feed capable for improving intestinal health of tilapia and preparation method of composite feed |
| CN105076712A (en) * | 2015-09-30 | 2015-11-25 | 通威股份有限公司 | Composite feed capable of protecting liver health of tilapia and preparation method of composite feed |
| CN105211534A (en) * | 2015-09-29 | 2016-01-06 | 广东恒兴饲料实业股份有限公司 | A kind ofly prevent mixed feed of Tilapia mossambica streptococcosis and preparation method thereof |
| CN106172145A (en) * | 2016-09-13 | 2016-12-07 | 中国水产科学研究院淡水渔业研究中心 | A kind of method that anti-Streptococcus iniae of gift tilapia improving high-density breeding infects |
| CN106615993A (en) * | 2016-09-13 | 2017-05-10 | 通威股份有限公司 | Compound feed used for tilapia mossambica breeding and preparation method thereof |
| CN109007460A (en) * | 2018-10-31 | 2018-12-18 | 成都三旺农牧股份有限公司 | A kind of mixed feed and preparation method thereof improving grass carp immunity |
| CN110521858A (en) * | 2019-08-19 | 2019-12-03 | 福建大北农水产科技有限公司 | A kind of mixed feed and preparation method thereof reducing Tilapia mossambica streptococcus lethality |
| CN111011661A (en) * | 2019-12-24 | 2020-04-17 | 广西北海市旺海生物科技有限公司 | Tilapia compound feed |
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