Method for breeding crabs and controlling diseases

Abstract

The invention belongs to the field of aquiculture, and relates to a method for breeding crabs and controlling diseases. The method provides an original biological environment with the best surviving and growing conditions for natural crabs, and obtains high quality Chinese Eriocheir sinensis as a crab seed by backcross and purification and rejuvenation. Breeding of the crab is returned nature by creating the original biological environment of crab survival, namely a natural crab pond, and carrying out a scientific and biological breeding method; and original biological environment and range suitable for crab growth are set, such as requirement on original biology of the crab pond, water quality, water temperature, breeding density, scientific bait dosage, water seed coverage rate and the like, and the unhealthy method which uses antibiotics, hormones and other medicaments and industrial synthetic feeds in a breeding process is eliminated, so that the bred crabs are big and strong, has rich cream, delicious meat and rich smell of wild crabs with average specification of between 150 and 250 grams. The crab can meet the requirements on export and pollution-free food, has 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 the seedling stage--the stage of the zodiac body to the stage of the big-eyed body; Different baits are needed, and different growth environments are ne...

AI Technical Summary

Problems solved by technology

[0003] Artificially cultured crabs are usually divided into the seedling stage--the stage of the zodiac body to the stage of the big-eyed body; Different baits are needed, and different growth environments are needed. 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