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32results about How to "Increase body length" patented technology

Special feed capable of increasing survival rate of leiocassis longirostris

The invention discloses a special feed capable of increasing the survival rate of leiocassis longirostris. The special feed comprises the following raw materials in parts by weight: 15-30 parts of sweet sorghum, 20-40 parts of oat flour, 10-20 parts of alfalfa powder, 10-18 parts of water hyacinth dry powder, 60-70 parts of a vegetable protein additive, 4-12 parts of kelp powder, 4-10 parts of puffed blood powder, 2-4 parts of rice wine distillers' grains, 2-4 parts of yeast protein, 4-8 parts of an immune enhancer, 2-4 parts of a Chinese herbal medicine additive and 4-6 parts of a chitosan compound, wherein the chitosan compound is prepared through the following technology: stirring the bentonite, the chitosan, a silane coupling agent and water, performing ultrasonic vibration, adding Tween 80, continuing performing stirring, performing filtering, performing washing and performing drying, so that the chitosan compound is obtained. According to the special feed, the leiocassis longirostris can easily adapt to breeding environment, the survival rate of seedlings is high, the immunity is high, the obtained leiocassis longirostris has the characteristics of being natural in body colorand healthy in fish body, the nutrient value of the leiocassis longirostris bred with the feed disclosed by the invention can be the same as that of wild leiocassis longirostris, and the requirementsfor high nutrient value of consumers can be met.
Owner:全椒县鮰鱼养殖专业合作社

Penaeus vannamei aquaculture system

The invention discloses a penaeus vannamei aquaculture system which comprises the following steps: 1, arranging an oxygen-increasing machine, a laser emission device and an ultrasonic wave generation device in a pond, and controlling the pH value and the transparency of water; 2, feeding penaeus vannamei seeds; 3, on the first to fifth days after the penaeus vannamei seeds are fed, uniformly mixing a conditioner with an opening material, feeding the penaeus vannamei seeds with the mixture, and feeding an activator and shrimp shell maintenance liquid every day; 4, on the sixth day after the penaeus vannamei seeds are fed, stopping feeding the opening material, but feeding the penaeus vannamei with a young shrimp material, and feeding the shrimp shell maintenance liquid every 3 days; 5, stopping feeding the young shrimp material, but feeding the penaeus vannamei with a medium shrimp material, feeding the shrimp shell maintenance liquid every 7 days, starting a motor and a laser emitter after each feeding of the activator is completed, and starting an oil cylinder and an ultrasonic wave generator after each feeding of the shrimp shell maintenance liquid is completed. The penaeus vannamei aquaculture system has outstanding beneficial effects of reducing the bait coefficient of penaeus vannamei, shortening the aquaculture period, increasing the survival rate and the acre yield and realizing fast individual weight gain.
Owner:北京三沙龙泰科技发展有限公司 +1

Complex enzyme preparation for feed of mink in winter fur growth period

The invention discloses a complex enzyme preparation for a feed of a mink in a winter fur growth period. The complex enzyme preparation for the feed of the mink in the winter fur growth period comprises the following six enzymes: amylase, acid proteinase, araboxylan enzyme, Beta-mannase, pectinase and phytase. The complex enzyme preparation can effectively fill the gap on endogenous enzyme of the mink, degrades the main antinutritional factors, namely, non-starch polysaccharides (NSP), in a vegetable feedstuff, reduces the gut digesta viscosity of the alimentary canal of the mink, and improves the digestibility utilization rate of the mink to the maize-bean pulp-fish meal type daily ration. By adding the complex enzyme preparation, the apparent metabolizable energy (AME) in the daily ration can be increased, the digestibility and utilization rate of the protein and starch can be raised, the excessive multiplication of spoilage organisms in the intestinal canal can be reduced, the microecological balance of the intestinal canal can be adjusted, the diarrhea rate is reduced, the premunition and the survival rate of the mink in the winter fur growth period can be increased, the feed conversion rate is raised, the average daily weight gain of the mink is increased, and the dimension of the skin of the mink is expanded, the costs of the feed and breeding are decreased, and the economic benefit is increased.
Owner:INST OF SPECIAL ANIMAL & PLANT SCI OF CAAS

Rapid breeding technology of hapalogenys mucronatus

The invention discloses a rapid breeding technology of hapalogenys mucronatus. The rapid breeding technology comprises the following steps: treatment of a culture pond: selecting an elliptical culture pond, disinfecting the culture pond and culture tools by using a disinfectant, and cleaning the culture pond with seawater for later use; fry putting: selecting an ecological polyculture mode of hapalogenys mucronatus and perches; bait feeding: putting bait into the culture pond; carrying out bottom sucking and water changing continuously in the culture period, adopting aerated micro-flowing water for culture, and ensuring that water is fresh; grading at proper time: when the pond is cleaned and disinfected, independently selecting individuals growing slowest to another water body for independent culture; adopting a competitive mechanism of last elimination; and disease control: performing medicated bath disinfection and pond cleaning treatment on the fish bodies in the culture process. The rapid, efficient and healthy breeding technology for the hapalogenys mucronatus is provided; and the obtained hapalogenys mucronatus has the advantages of higher survival rate, higher body length, higher body mass, higher nutrient substances, higher nutritional value and higher polyunsaturated fatty acid content.
Owner:MARINE FISHERIES RES INST OF ZHEJIANG

Ecological totally-enclosed circulating mariculture system

The invention discloses an ecological totally-enclosed circulating mariculture system which comprises a fish culture pond, a purification pond and a circulating unit. The fish culture pond has an area of 25-30 m<2> and water depth of 1.0-1.5 m; red sea bream is cultured in the fish culture pond; the putting density of the red sea bream is 10-20/m <3>; and the body length of the red sea bream is 12.0 +/-3.0 cm, and the weight of the red sea bream is 56.4 +/-25.0 g. Sesuvium portulacastrum is cultured in the purification pond, the specification of the purification pond is (3.5-4.5)m * (5.5-6.5)m, the water depth of the purification pond is 0.5-1.0 m, the purification pond is divided into 3-4 water channels at equal intervals, the water channels are connected in series end to end, and water flow bypasses the water channels in an S shape; and the density of the sesuvium portulacastrum is 20-30 plants/m<2>, the sesuvium portulacastrum plants are 35.9 +/-15.0 cm, and the average wet weight is 212.6 +/-100.0 g/plant. The circulating unit is used for enabling water in the fish culture pond to flow into the purification pond and enabling water in the purification pond to flow into the fish culture pond; and the culture water is circulated for 5-10 times every day between the fish culture pond and the purification pond. A breeding-planting-water quality purification three-in-one ecological culture system is constructed, and a benign composite ecological circulation system which can recycle energy and is stable in structure is formed.
Owner:FISHERIES RES INST OF FUJIAN

Preparation method of feed for promoting growth and development of procambarus clarkia

The invention belongs to the technical field of shrimp feed preparation, and discloses a preparation method of a feed for promoting growth and development of procambarus clarkia. Theprocambarus clarkia feed comprises white fish meal, soybean meal, fish oil, soybean phospholipid, flour, bran, earthworm powder, vitamin and mineral premix, monocalcium phosphate, choline chloride, molting element, dextrin and algin. According to the method, 3%-4% of the soybean phospholipid is added into the feed, so that the body length, the weight growth rate and the characteristic growth rate of procambarus clarkia juvenile shrimps can be effectively increased, the feed coefficient is reduced, the survival rate of the juvenile shrimps is increased, and the growth of the juvenile shrimps is accelerated; thedigestive enzyme activity and the oxidation resistance of the procambarus clarkia can be remarkably improved by adding 3% of the soybean phospholipid; and 3%-4% of the soybean phospholipid plays an important role in promoting the ovarian development of the procambarus clarkia, increasing the ovarian index, increasing the diameter of oocytes, accelerating the synthesis and accumulation of egg yellow phosphorus protein and promoting the maturation of the oocytes.
Owner:YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Culture method of Penaeus vannamei with low bait coefficient

The invention discloses a Litopenaeus vannamei culture method with the low bait coefficient. The method includes the following steps that 1, one aerator is arranged per mu, a laser emitting device is installed every 300 square meters, an ultrasonic generation device is installed every 100 square meters, water flows in, and the pH value and transparency are controlled; 2, shrimp larvae are put; 3, a nutrient enrichment material is fed on the first to fifth days after the shrimp larvae are put; 4, feedstuff for the mouth-open period stops being fed on the sixth day after the shrimp larvae are put, and a fitness material replaces the feedstuff for the mouth-open period to be fed for 20-35 days; 5, the fitness material and a meat increase material are mixed to be uniform according to the mass ratio of 1:0.5, and the mixture is fed for 6-10 days; 6, the fitness material and the meat increase material are mixed to be uniform according to the mass ratio of 1:1, and then the mixture is fed. The method has the advantages that the bait coefficient of Litopenaeus vannamei is remarkably reduced, the survival rate and per mu yield are effectively increased, and individuals of the Litopenaeus vannamei are longer and heavier within the same culture time.
Owner:海南正源水产研究院有限公司 +1

Litopenaeus vannamei culture method with low bait coefficient

The invention discloses a Litopenaeus vannamei culture method with the low bait coefficient. The method includes the following steps that 1, one aerator is arranged per mu, a laser emitting device is installed every 300 square meters, an ultrasonic generation device is installed every 100 square meters, water flows in, and the pH value and transparency are controlled; 2, shrimp larvae are put; 3, a nutrient enrichment material is fed on the first to fifth days after the shrimp larvae are put; 4, feedstuff for the mouth-open period stops being fed on the sixth day after the shrimp larvae are put, and a fitness material replaces the feedstuff for the mouth-open period to be fed for 20-35 days; 5, the fitness material and a meat increase material are mixed to be uniform according to the mass ratio of 1:0.5, and the mixture is fed for 6-10 days; 6, the fitness material and the meat increase material are mixed to be uniform according to the mass ratio of 1:1, and then the mixture is fed. The method has the advantages that the bait coefficient of Litopenaeus vannamei is remarkably reduced, the survival rate and per mu yield are effectively increased, and individuals of the Litopenaeus vannamei are longer and heavier within the same culture time.
Owner:海南正源水产研究院有限公司 +1
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