Method for increasing survival rate of high-density culture fish

Abstract

The invention discloses a method for increasing the survival rate of high-density culture fish. The method mainly includes diversified aspects that aerators are uniformly arranged in culture ponds andare distributed in a 'high and low' circulation manner according to arrangement locations, the arrangement density of the aerators is 15-30 aerators / mu, and the aerators can be started at regular time; aquatic vegetables are planted on the surfaces of the culture ponds by the aid of bamboo rafts and are close to shores, the high-density culture fish is fed with biological bait in culture procedures, disease-resistant immune enhancers are mixed with the biological bait, the high-density culture fishes are cultured with elopichthys bambusa in the culture ponds in a matched manner at culture middle stages, and the like. The method has the advantages that the culture water quality can be effectively improved, the immunity of grass carp can be enhanced, accordingly, the survival rate of the grass carp can be increased, and the quality of the grass carp can be enhanced.

Description

technical field [0001] The invention relates to a method for improving the survival rate of high-density cultured grass carp, belonging to the technical field of aquaculture. Background technique [0002] Grass carp is one of the "four major fishes" in my country, and its annual output accounts for one-fifth to one-fourth of the total freshwater fish production in my country, and it is the highest yield among the freshwater fish used. Grass carp has the advantages of strong adaptability, wide range of feed sources, rapid growth and delicious meat. It is cultivated all over the country and occupies a very important position in the national economy. There are various problems in traditional grass carp farming, such as low feed utilization, large-scale outbreaks of fish diseases, and water pollution caused by the abuse of fish medicines, which have a great negative impact on the breeding environment and food safety. Intensive farming is the use of advanced feeding and manageme...

AI Technical Summary

Problems solved by technology

However, if the breeding density is too high, there are still some problems. Because a large amount of bait is fed, not only the bait coefficient is low, but also too much bait will sink to the bottom of the water, which will damage the water quality in the long run, and the excessive density of breeding will cause the grass carp to have a stress response. , or prone to various diseases