Method for breeding crabs in winter

Abstract

The invention discloses a method for breeding crabs in winter. The method includes the following steps of (1) selection and construction of a pond, wherein the pond with sufficient water sources and without silt is selected and comprises a shallow water area at the center and deep water areas surrounding the shallow water area, and a greenhouse is erected above the pond; (2) disinfection treatmentof the pond; (3) breeding. During breeding, juvenile crabs are put into the breeding pond prepared in the step 2, the water temperature is 10-20 DEG C when the juvenile crabs are put, and the breeding density of the crabs is 600-700 per mu; the temperature of the pond is adjusted to be 10-20 DEG C during the period from the late October to the next March, the crabs are fed with Chinese herbal feed once every day, and the feeding amount is 8-10% of the weight of the crabs; the temperature of the pond is adjusted to be 15-25 DEG C during the period from the next March to the date for catching the crabs, the crabs are fed with animal feed once every morning and every evening, and the feeding amount is 10-12% of the weight of the crabs. By adopting the method for breeding the crabs in the winter, breeding of the crabs in the winter or in cold areas is made possible, the morbidity is reduced, and the yield is increased.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a winter breeding method for crabs. Background technique [0002] Crabs, also known as river crabs, are freshwater crustaceans that grow up in freshwater. The crab meat is delicious and nutritious. Crab has been generally recognized as a delicacy by Chinese and overseas people. In the production of river crabs, it has also realized the transformation from quantity speed type to quality benefit type, from "big crab farming" to "big crab farming", especially paying more attention to ecology, safety, environmental protection, health, and pollution-free The cultivation of aquatic products has higher and higher requirements on the quality of aquatic products. [0003] At present, the technology of artificially cultivating crabs still has many deficiencies, and people's experience in artificially cultivating crabs is still not perfect. Breeding crabs require differen...

AI Technical Summary

Problems solved by technology

[0003] At present, there are still many deficiencies in the technology of artificially raising crabs, and people's experience in artificially raising crabs is not yet perfect.

Breeding crabs require different baits at different stages, and require different growth environments. Many technicians ignore the scientific setting of the ecological environment for crab farming when breeding crabs, use industrial compound feed, and use drugs blindly, causing damage to the ecological environment of crabs. Crab survival rate is low, quality declines

When cultivating crabs in the north, there is still the problem of overwintering. Winter causes a large number of diseases and deaths of crabs, and the output of crabs is difficult to meet market demand.