Underground water energy-conservation overwintering method of portunus trituberculatus

Abstract

The invention provides an underground water energy-conservation overwintering method of portunus trituberculatus. The method comprises the following steps that: manual seed selection parent crabs without any diseases are selected; after the parent crabs are disinfected, the parent crabs are placed into an overwintering pool, the bottom of the overwintering pool is paved with sand, and a circulating water technology can be used for keeping a water temperature in the overwintering pool; the disease detection and the disease prevention are carried out at fixed period so as to avoid causing vertical disease transmission in a breeding process; during the overwintering period, an underground water circulating technology is adopted to cut off a transmission path of the diseases so that the utilization of coal can be reduced, the energy conversation and the emission reduction can be realized, and the overwintering survival rate and the economic benefits are improved; and baits are reasonably matched, and have complete nutrition, so as to accelerate the healthy development of parent crab embryos, so as to make good preparation for breeding healthy juvenile crabs. With the adoption of the method disclosed by the invention, the overwintering survival rate of the portunus trituberculatus is improved by 15%, the juvenile crab yield is improved by 15% and the expenditure is saved by 30%; and the underground water energy-conservation overwintering method can be widely applied to sea-near sea areas and has the obvious economic benefits.

Description

technical field [0001] The invention belongs to the technical field of overwintering swimming crab parents, and in particular relates to an energy-saving underground water overwintering method for swimming crabs trituberculatus. Background technique [0002] Portunus trituberculatus ( Portunus trituberculatus ) is an important marine economic animal. Because of its fast growth, large individual and delicious meat, it is deeply loved by the masses and has high economic value. Therefore, it is gradually developed as a breeding object. At present, the breeding area is 500,000 mu, and the output reaches 100,000 tons. It has become one of the leading species of marine farming in my country. At present, 1.5 billion Portunus trituberculatus seedlings and about 30,000 brood-bearing crabs are required for breeding every year. However, in recent years, problems such as low survival rate of parental crabs overwintering, poor quality of eggs, and virus carrying have become increasingly...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of low overwintering survival rate, poor ovum quality and virus-carrying problems in the prior art of Portunus trituberculatus parent crabs, the object of the present invention is to provide a groundwater energy-saving and overwintering method for Portunus trituberculatus. The present invention selects artificial breeding parent crabs, And through circulating water technology, energy saving and emission reduction can be achieved, saving 30% of expenses, reasonable temperature control and disease prevention and control measures can increase the survival rate of overwintering by 15%, rich bait matching can improve the quality of brood crab eggs, and the seedling output can increase by 15% , which solves the problems of low survival rate of wild brood crabs overwintering, poor egg quality and carrying viruses in the prior art