What is the breeding method of yellow-tailed fish?

1. fry culture technology: generally, the methods of single culture, shallow water sowing, delayed fertilization, gradual deepening of water level, timely screening and sparse culture in different ponds are adopted. The density of the lower pond is controlled at about 200,000 fish/mu. After 5 days of fertilization and 7 days of cultivation, when the fry reach 65438±0.5cm, the large fry can be raised, screened and kept small, and the large fry can be transferred to the deep pond for cultivation with a density of 5-5 fish.

2. Fish culture: At present, polyculture is mostly adopted, because it is not restricted by other fish. For example, 5000 ~ 6000 fish per mu can reach 5 grams by the end of the year after five months of breeding, but this method is rarely used at present.

Three, adult fish culture: mainly for large-scale stocking and pond polyculture.

(1) Large-scale stocking: the average area of lakes and reservoirs 100 ~ 200 fish, which can reach 40 ~ 60 grams by the end of the year. Under the condition of not affecting the growth of other fish, the net income per mu is 5 ~ 10 kg, and the net benefit per mu can reach 30 ~ 50 yuan.

(2) Polyculture in ponds: 65,438+0,000 ~ 65,438+0,200 per mu, depending on the fatness of fish ponds and the richness of bait. Generally, the yield per mu is 25-50 kg. Schizothorax flavipectus has a certain relationship with other fish, which can make full use of the residual organic matter and organisms in the water and reduce the occurrence of other fish diseases.

There are generally two kinds of culture forms, one is mixed culture or interplanting culture between ponds and large and medium-sized water surfaces, and the other is special culture between ponds and cages. Both forms of income are relatively high, and the analysis is as follows:

① polyculture. There is no need for special feed, mainly using natural bait and other fish scraps and saplings, and there is no need for feed cost, only for fish species. In general, 65,438+000-200 species of large fish were put into polyculture and intercropping. By the end of the year, the size of each fish can reach 300-400g, and the yield of Siniperca chuatsi can be increased by100-120kg per mu.

2 Special care. Special culture in ponds and cages has the characteristics of high yield, large amount of special feed and fish, and relatively high cost; The income is also relatively high. Pond culture, per mu 1000, cage culture, per cage 1000; The size of fish species should be large, above 16 cm. Special concentrate feed and puffed pellet feed are needed.