Ways to improve the Survival rate of Grass Carp fingerling by culturing Grass Carp

Grass carp culture alone or grass carp-based mixed culture must maintain fresh water quality. Feed mainly with green material and supplemented with concentrate. Concentrate has bran, beans and formula feed and so on. Summer flowers should be fed with fresh and tender aquatic plants, such as duckweed, turnip or tender grass pulp, at the initial stage (within 15 days). During this period, the growth of grass carp is very fast, and the body length can be increased by 2.5 ~ 4 times. When the grass carp is up to 10 centimeters long, you can throw in some water plants and tender land grass. In the future, the requirements for the types of grass feeding are not strict. No matter which breeding stage grass carp is raised, it must be "determined". Throw grass once every morning and evening, after 8: 00 a. M. and 3: 00 p. M. The amount of feed should be gradually transferred from 20 kg to 200 kg per 10,000 fish. Make sure the feed is fresh and does not go bad, and pay attention to washing the green material before feeding.

It is best to arrange the time of feeding concentrate after feeding green fodder, and it is best to eat it every time, not too much, to prevent grass carp from gluttony and cause enteritis. Special attention should be paid in July, August and September, if fish diseases are found, they should be treated as soon as possible.

In the cultivation of one-year-old fish species, it is the fish disease-prone season, so breeding should be extra careful to ensure the survival rate. The specific measures are as follows:

1. As the grass carp grows from 2 cm to 10 cm, the herbivore ability is gradually strengthened, so the feeding is gradually transformed from fresh and tender water plants to general land and water plants.

two。 Flush at the right time. When it is found that the water color of the monoculture grass carp pond is thick, it shows that the water has been overfertilized, affecting the development of grass carp species, and can be flushed properly to dilute the water quality. Grass carp ponds with mixed culture of other fish should not be too fat.

3. Drug prophylaxis. Wash the green feed or soak it in 6mg / L bleach for half an hour before feeding it. In the food market, the mixture of copper sulfate and ferrous sulfate should be hung in bags or bleach baskets to prevent the occurrence of fish disease.