Method for breeding crayfish in workshop in early spring

Abstract

The invention discloses a method for breeding crayfish in a workshop in early spring. The method comprises the steps of S1, building the workshop; S2, breeding in a breeding pond; and S3, harvesting and catching crayfish seedlings, wherein the workshop adopts a workshop early spring breeding technical mode of a cement pond and hydrilla varticillata, the natural advantages of the end of winter andearly spring cold season of Nanning in Guangxi Province are utilized, the early breeding environment control of the crayfish is achieved through a water treatment pond and a control assembly, and thepossibility that the crayfish obtains early breeding seedlings in February to March every year is achieved. The method is simple and low in production cost, due to the fact that the climate is proper,the feed ratio is scientific, the breeding time of the crayfish is short, the breeding survival rate of the crayfish with eggs is high, the market economic value is high, and compared with an existing method, the time to market can be advanced by 2-3 months; and meanwhile, natural enemies of the seedlings can be effectively avoided in workshop breeding, and the crayfish is prevented from escaping.

Description

technical field [0001] The invention relates to the field of crayfish farming. More specifically, the present invention relates to a method for breeding crayfish in early spring in a workshop. Background technique [0002] The annual market of crayfish has a relatively obvious fluctuation trend. The price is high in the early spring season. From May to September, due to the concentrated listing of commodity shrimp, the price drops, and in winter it becomes a scarce resource and the price increases. Breeding seedlings will produce great breeding benefits; therefore, crayfish early breeding technology is particularly important. [0003] At present, the early breeding technology is mostly applied to aquatic species such as largemouth bass, California perch, Taiwan loach and red-eyed trout, but there are relatively few reports on crayfish. The breeding and breeding system of crayfish in the Yangtze River Basin for early breeding and listing proposed in "Morning Market Breeding...

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Problems solved by technology

[0003] At present, the early breeding technology is mostly applied to aquatic species such as largemouth bass, California perch, Taiwan loach and red-eyed trout, but there are relatively few reports on crayfish. The breeding and breeding system of crayfish in the Yangtze River Basin for early breeding and listing proposed in "Morning Market Breeding System Design", Chang Zhiwei's "Crayfish Early Breeding Experiment" published in the journal Aquaculture, and Jiang Yuanfang's paper in the journal Aquaculture "Early breeding experiment of crayfish earthen ponds" published in , but the former were all carried out in ponds, and the cultivation in ponds was limited by the specific natural environment, there were natural enemies, and the survival rate of shrimp fry was not high. At the same time, the parents and seedlings in the ponds Quantity cannot be determined, quality cannot be guaranteed

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