Breeding method capable of increasing proportion of superior commodity crabs
A farming method and commodity technology, applied in fish farming, application, climate change adaptation, etc., can solve problems such as lower unit yields, and achieve the effects of increasing the stocking specifications, strengthening the management of aquaculture supporting technologies, and improving the farming model.
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[0019] A new breeding method for improving the cultivation ratio of high-grade commercial crabs, comprising the following steps:
[0020] 1. Seed source and selection: From October to November every year, wild crab species are artificially caught in natural grass-shaped lakes in high-altitude areas. The selection specification is 20-25 / kg. The body color is consistent, the transparency is good, and the crawling is agile. For crab species that are sensitive to light, observe the selection characteristics of crab species such as frontal spines, abdominal villi, convex shape of the carapace heart and stomach area, and appendage length and strength, and remove precocious crab species and dry transport them to the selected plains area breeding ponds.
[0021] 2. Breeding cycle and stocking density: from October to November of the current year to August to October of the following year, the stocking density of pond culture is 800-1000 / mu.
[0022] 3. Temporary cultivation and desal...
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