Method for using nanometer slow release feed to breed mandarin fish

Abstract

A method for using nanometer slow release feed to breed mandarin fish includes: building a pond which has a sandy bottom with 15cm of sludge, is more than 1.5m in water depth, convenient in drainage and irrigation and good in water quality, and has no waste water inflow; allowing the water temperature to be 25-29 DEG C which is most appropriate growth water temperature in artificial breeding; in winter and spring, fishing up robust parent fish without surface damage from the breeding pond to breed in a pond of a greenhouse and using the same for artificial breeding, and placing the breeding parent fish of the parent fish into the pond of the greenhouse; feeding four times each day during breeding, calculating feeding amount according to 20-50% of fish weight, feeding sufficiently to avoid feed competition, and flexibly control the feeding amount according weather conditions. By adding the composite microorganism feed of the method, fast growth of mandarin fish can be promoted, EPA content is increased, disease is reduced, mandarin fish death caused by diseases is reduced, beneficial microorganisms in water are increased, and final quality of mandarin fish is improved.

Description

technical field [0001] The invention relates to an aquaculture method, in particular to a method for cultivating sweet-scented osmanthus fish with nano slow-release feed. Background technique [0002] Mandarin fish (Siniperca chuatsi), also known as sweet-scented osmanthus fish and seasonal flower fish, belongs to Perciformes, Perciformes, Siniperca, and Siniperca genus. Mandarin fish is shaped like a perch in Songjiang River, with thorns on its wings. It is a rare freshwater economically farmed fish in my country. It has delicious meat, rich nutrition, high protein and various amino acids, and has medicinal functions. It has high economic value. In the Qing Dynasty, Zhang Zhihe had a poem of "peach blossoms and flowing water with mandarin fish fat", which is favored by consumers and has a broad market prospect. At the same time, with the need for species renewal and structural adjustment in the aquaculture industry, mandarin fish farming as a special aquatic product has als...

AI Technical Summary

Problems solved by technology

However, due to the constraints of factors such as geographical location and climate, the artificial breeding of anchovies under normal temperature conditions in this area can only be carried out in the first ten days of May, which affects the growth period of the year and prolongs the breeding cycle for growing into the market. It is not conducive to the improvement of production and efficiency; and the seedlings introduced from the south, due to long-term breeding and do not pay attention to the purification and rejuvenation of germplasm, coupled with the influence of climatic conditions, transportation and other factors, the risk of breeding is getting higher and higher , has seriously affected the healthy and rapid development of the mandarin fish aquaculture industry

Existing single-type fish fertilizers and compound-type fish fertilizers also have a common shortcoming, that is, they cannot kill harmful bacteria and insects, so they lack the effect of effectively preventing and controlling fish diseases

The content of beneficial bacteria in the fish pond can be increased through microbial compound fish fertilizer, and the occurrence of fish diseases can be effectively reduced. At present, there is no report on the method dedicated to cultivating sweet-scented osmanthus fish with nano-scale slow-release feed