How to breed grass carp

Grass carp is one of our common edible fish, is a common main species of aquaculture, high nutrition, mainly feed on small plants, plankton, how to reproduce fish fry should learn to understand, reproduction is to reduce costs, the premise of increasing production, so next, we will talk about how to reproduce grass carp.

1. Choose fish species

First of all, healthy fish species with normal body color, luster, no scale damage and no loss are selected to achieve sexual maturity as the fish body for production and use in that year. Fish that have not yet reached sexual maturity are reserved for breeding in the second year. When choosing to grow fish, males are required to have more males than females, which is conducive to breeding.

2. Fish breeding

The parent fish culture pond should be located near the induction pond, convenient for drainage and irrigation, sun pond for 3 to 5 days before stocking, and disinfection with chemicals if necessary. One hectare pond breeds about 2000 kilograms of fish, in order to grow fish food, you can put some miscellaneous fish in the water. Grass carp mainly eat grasses and some aquatic plants. Followed by a variety of grain and artificial feed, usually can put some bean cakes, grass to provide food.

3. Fish planting to induce spawning

To promote the production of breeding fish must reach the mature stage, can be in the middle of April, pull the net to check, for those with poor maturity, according to the individual size and maturity, according to the individual size and maturity, the male fish squeeze the abdomen and flow out semen, which will spread quickly in the water, and the abdomen of the female fish becomes larger, soft and elastic, and the scales become less. The most suitable water temperature for induced labor is 25-30 degrees. Breed fish can be injected with pituitary, chorionic gonadotropin and luteinizing hormone to promote ovulation, or you can wait for them to mature and ovulate.

4. Hatching

Set up a hatching area, which can be hatched with running water, usually 5000 eggs in an one-cubic-meter pool. The water temperature is different, the hatching time is different, generally the best temperature is between 25 and 30 degrees, hatching a day and a half may come out of the shell, 3-5 days after hatching, all the yolk of the fry is absorbed, you can feed in the pond.

Breeding grass carp fry is mainly to select suitable species of fish, breed in a good environment, grasp the ovulation and maturity of fish, and hatch operation standards. Among them, we also need to pay attention to some problems according to the actual situation, so the above content can be used as a reference for everyone.