Crab breeding and disease prevention and control method

Abstract

The invention belongs to the field of aquaculture and relates to a crab breeding and disease prevention and control method. A natural original ecological environment having the best crab survival andgrowth conditions is provided, high-quality Chinese mitten crab obtained through backcross, purification and rejuvenation are adopted as crab breeds, crab breeding trends to natural by creating the original ecological environment for crab survival, adopting natural crab ponds and adopting a scientific and ecological breeding method, it is set that the original ecological requirements for the crabponds, water quality, water temperature, breeding density, scientific bait putting, water plant coverage rate and the like are suitable for the original ecological environment and range for crab growth, and unhealthy methods such as antibiotics, hormones, other drugs and industrial synthesized feeds adopted in the breeding process are not adopted, so that produced crabs are big, strong and rich infat, have fresh and sweet meat, have the rich fragrance of wild crabs, have the average size of 150-250 g, can meet the export and pollution-free food requirements and have high economic value and good social benefit.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to methods for cultivating crabs and controlling diseases of crabs. Background technique [0002] Crabs, also known as river crabs, are freshwater crustaceans. They grow up in freshwater and become sexually mature at the second age. Crabs generally mate at 10-15°C, lay eggs in the waters where sea and freshwater meet, and form flea-like bodies. In the environment, the flea-shaped body of crabs evolves into adult crabs through big-eyed body, larvae, crab, and crab species. Crab meat is delicious and nutritious, and is regarded as a delicacy. Catching natural crab seedlings or artificially cultivated crab seedlings for breeding has high economic and social benefits. [0003] Artificially cultured crabs are usually divided into seedling stage-- from zodiac body to big-eyed body; buckling crab stage--from big-eyed body to crab seed stage, crab seed stage--from crab seed to adult ...

AI Technical Summary

Problems solved by technology

[0003] Artificially cultured crabs are usually divided into seedling stage-- from zomboid to big-eyed body; buckling crab stage--from big-eyed body to crab seed stage, crab seed stage--from crab seed to adult crab stage, each stage Different baits are needed, and the growth environment is also different. The current artificial breeding often ignores the scientific setting of the ecological environment of crab breeding, uses industrial compound feed, blindly uses drugs, uses antibiotics and hormones, etc., causing damage to the ecological environment of crabs and causing crabs to grow. The survival rate of seedlings is low, the adult crabs are small, mature early, and the quality declines