Method for river crab pond breeding and procambarus clarkii annual breeding

Abstract

The invention belongs to the technical field of aquaculture, and particularly relates to a method for river crab pond breeding and procambarus clarkii annual breeding. The method comprises the steps that firstly, a one-meter-high purse seine is arranged at 50-60 cm below the water surface of a pond, and a larval breeding area is formed; secondly, parent shrimp are put at the end of August or at the early September, wherein the weight of one parent shrimp is 40 g, and the female-male ratio is 3:1; thirdly, the shrimp and the crabs are fed with feed from the late September, and culturing is strengthened at the water temperature of 10 DEG C or above; fourthly, the postpartum parent shrimp are caught starting from November; fifthly, commercial river crabs are caught starting from the early November to the early January of the next year; sixthly, the shrimp and the crabs are fed with expanded sinking pellet feed at the end of the middle of March of the next year; seventhly, the commercial shrimp of 30 g or above are caught from the late April of the next year to the late August of the next year; eighthly, river crab larvae of 18 g are put in the middle of May, and fed with the expanded sinking pellet feed, the feeding amount is increased to 5% from 1.5%; ninthly, the commercial shrimp of 40 g are reserved to serve as the breeding parent at the late August, and the next round of larval shrimp breeding is started at the end of August or at the early September; tenthly, the river crabs start to be caught from the late October.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for the anniversary breeding of a river crab pond and Crayfish. Background technique [0002] River crab and Crayfish are one of the important aquatic products in my country to earn foreign exchange from aquaculture and export. The domestic consumption of food and beverages exceeds 100 billion yuan. Fresh river crabs are exported. Exports of products and chemical processing products have huge economic potential. Therefore, at this stage, commercial crabs and commercial shrimps cannot meet the needs of domestic and foreign markets at all, and juveniles cannot meet the needs of domestic production. Therefore, it is imperative to carry out the method of annual breeding of crab ponds and Crayfish. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a method for the annual breeding of a river crab pond and Crayfish, and the m...

AI Technical Summary

Problems solved by technology

Therefore, commercial crabs and commercial shrimps at this stage cannot meet the needs of domestic and foreign markets at all, and juvenile shrimp seed cannot meet the needs of domestic production. Therefore, it is imperative to carry out the annual breeding of river crab ponds and Procambarus clarkii