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Bait feeding method for improving industrialized larva breeding survival rate of freshwater shrimps
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A bait feeding and industrialization technology is applied in the field of aquaculture to achieve the effects of reducing costs, improving aquaculture water quality, and increasing the survival rate.
Inactive Publication Date: 2017-06-13
河北省海洋与水产科学研究院
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Problems solved by technology
[0004] According to the respective advantages and disadvantages of the artificial bait and the biological bait for freshwater shrimp, the present invention performs bait matching, and provides a mixed feeding method of the artificial bait and the biological bait
Method used
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Effect test
Embodiment 1
[0018] See the table below for the specific feeding methods and dosage for the cultivation of freshwater shrimp larvae:
[0019] .
[0020] One seedling in 2016, 1000m 3 A total of 160 million larvae were cultivated in the water body. Using this technology, after nearly a month of seed cultivation, the body length of larvae can reach 1.0-1.5cm, and the cultivation density can reach 150,000-200,000 fish / m 3 , the survival rate is as high as 47.2%, and the bait cost is only 3.2 yuan / 10,000 tails.
Embodiment 2
[0022] See the table below for the specific feeding methods and dosage for the cultivation of freshwater shrimp larvae:
[0023] .
[0024] One seedling in 2016, 1000m 3 A total of 160 million larvae were cultivated in the water body. Using this technology, after nearly a month of seed cultivation, the body length of larvae can reach 1.0-1.5cm, and the cultivation density can reach 150,000-200,000 fish / m 3 , the survival rate is as high as 47.9%, and the bait cost is only 3.2 yuan / 10,000 tails.
Embodiment 3
[0026] See the table below for the specific feeding methods and dosage for the cultivation of freshwater shrimp larvae:
[0027] .
[0028] One seedling in 2016, 1000m 3 A total of 160 million larvae were cultivated in the water body. Using this technology, after nearly a month of seed cultivation, the body length of larvae can reach 1.0-1.5cm, and the cultivation density can reach 150,000-200,000 fish / m 3 , the survival rate is as high as 48.3%, and the cost of bait is greatly reduced.
[0029] In 2011, using the feeding method of the patented technology "a high-density industrialized seedling raising method for freshwater shrimp" (patent number 201110361355.X), after nearly 30 days of seedling cultivation, the body length of larvae can reach 1.0- 1.5cm, the breeding density reaches 150,000-200,000 / m 3 , the survival rate was 42.2%, and the cost was 5.8 yuan / 10,000 tails.
[0030] Comparing the two feeding methods, the new method increased the survival rate of larvae b...
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Abstract
The invention provides a bait feeding method for improving the industrialized larva breeding survival rate of freshwater shrimps. In a freshwater shrimplarva production process, artificial baits and biological baits are mixed according to a certain ratio and fed, and the nutrient is more comprehensive than that of single feeding of frozen and fresh biological baits. Furthermore, compared with a manner of completely feeding the artificial baits, the pollution to a breeding water body is extremely effectively reduced, the occurrence probability of sessilinasis and filamentous bacteria is reduced, and the survival rate of larva breeding is improved and can reach 47.2 percent at maximum; in addition, the cost is saved by 40 percent or more when being compared with the manner of completely feeding the artificial baits. The method provided by the invention is a method capable of improving the larva breeding survival rate of the freshwater shrimps and reducing the production cost; especially, the bait feeding method is suitable for freshwater shrimp larva production of the Northern inland region in China and has relatively high popularization value.
Description
technical field [0001] The invention belongs to the field of breeding technology, and in particular relates to a feeding method for improving the survival rate of freshwater shrimp in industrial seedling cultivation. Background technique [0002] Freshwater prawn, also known as river prawn, scientific name Macrobrachiumjaponica, belongs to Arthropoda, Crustacea, Longarm Shrimp family, Macrobrachiumgenus, is a unique freshwater shrimp in Japan and China. In my country, green shrimps are widely distributed in rivers and lakes in the north and south. Green shrimps are highly adaptable, omnivorous, short breeding cycle, strong fecundity, rich in nutrition, and high in market price. They are popular among consumers. It is a valuable aquatic product and can be exported to earn foreign exchange, so it is a promising breeding species. At present, domestic shrimp breeding methods mainly include earthen pond breeding, net cage breeding and factory breeding. The seedling cultivation...
Claims
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Application Information
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