Loach large-scale ecological breeding method

Abstract

The invention discloses a loach large-scale ecological breeding method. Only tubificidaes are taken as food during the whole loach breeding process. The breeding method comprises the following steps: building a breeding pond: selecting two different-scale cornfields or rice fields with sufficient water source, rich nutrient, convenience in irrigation and drainage and slight slopes on periphery as construction bases of the breeding pond; breeding tubificidaes; putting in loach larva: after breeding the tubificidaes in the attached pond for 40-45 days, putting in the loach larva according to the breeding density of 90-100 loaches per square meter, and using a mesh screen for fishing till the loach larva grow into the aged loach meeting the fishing demand. According to the loach large-scale ecological breeding method provided by the invention, the tubificidaes are taken as food during the whole loach breeding process, the breeding mode of excessively depending on artificial diet in the present aquaculture is settled and the entire defective situation of the aquaculture caused by the water pollution during the breeding process is settled.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a large-scale ecological breeding method for loach. Background technique [0002] my country's aquaculture is dominated by filter-feeding and omnivorous species, followed by filter-feeding species accounting for 50.0%, omnivorous species accounting for 26.0%, herbivorous species accounting for 12.0%, carnivorous species accounting for 7.0%, and aquatic plants accounting for 5.0%. In recent years, with the development of the economy and the improvement of people's living standards, the market for carnivorous species with delicious meat and high economic value is active, and the development prospects are promising. According to statistics, wild fish that are directly used for feeding in aquaculture in my country every year 4-5 million tons, and another 30 million tons are fed as feed materials. From the perspective of the form of feed utilization, my country's aquaculture pro...

AI Technical Summary

Problems solved by technology

In terms of freshwater aquaculture, many fishermen directly use feed raw materials, or cultivate live baits such as rotifers through a large amount of fertilization. This production method breaks the natural ecological food chain and destroys natural resources, especially the "high nutrition" of farmed animals. Meican consumes nearly half of my country's marine fishing output, wasting a large amount of economic juvenile fish and some precious aquatic species, but the aquaculture products did not increase their value, but were plagued by environmental pollution and aquaculture diseases. , quality and other issues are coldly received by domestic and foreign aquatic product processing and consumer markets

Tests have shown that nitrogen and phosphorus discharges are 4-5 times higher in the breeding methods using small miscellaneous fish as feed and in the feeding method using compound feed, and a large amount of organic matter that has not been absorbed and digested enters the water area, causing the deterioration of the local environment. Induced diseases, threatening the food safety of aquaculture products and the trade of aquatic products in our country