Germ cell hatching method in Micropterus salmoides early breeding process

Abstract

The invention belongs to the fish breeding field, and specifically relates to a germ cell hatching method in a Micropterus salmoides early breeding process; the hatching method comprises the following steps: setting up a hatching greenhouse, wherein the hatching greenhouse comprises a hatching pond and a greenhouse body arranged on the hatching pond; placing an artificial fish nest attached with germ cells into the hatching pond; setting up a temperature control system in the hatching greenhouse; controlling the hatching pond water temperature to be at 25-28 DEG C. Furthermore, setting up a matching hatching water filter system on the hatching pond upper stream, and setting up a water discharge structure on the hatching pond downstream. Test shows, by setting up the temperature control system in the hatching pond and controlling the hatching pond water temperature to be at 25-28 DEG C, the Micropterus salmoides germ cells can be effectively prevented from getting saprolegniasis, thus greatly improving hatching survival rate of the germ cells. The hatching water filter system can ensure the hatching water quality and prevent hostile organisms from entering the hatching pond; the water discharge structure can be used for replacing water for the hatching pond, or applied in water flow operations.

Description

technical field

[0001] The invention belongs to the field of fish breeding, and in particular relates to a method for hatching fertilized eggs in the early breeding process of largemouth bass. Background technique

[0002] In the reproduction and production of fish, the fry bred earlier can be sold at a higher price due to the vacancy of the market, and can occupy the market as soon as possible to obtain more benefits. Therefore, more and more largemouth bass are brought to the market early through early breeding. During the artificial early breeding of largemouth bass, after the parent fish of largemouth bass are fertilized, the fertilized eggs of largemouth bass are fertilized through artificial fish nests. It is collected and then placed in a special hatching tank for hatching. However, during the hatching process, the fertilized eggs of largemouth bass are very susceptible to saprolegniasis, resulting in the death of fertilized eggs and a low hatching survival rate. Co...

Examples

Embodiment Construction

[0034] The hatching method comprises building a hatching greenhouse, putting artificial fish nests attached with fertilized eggs into a hatching pond in the hatching greenhouse, and establishing a temperature control system in the hatching greenhouse to control the water temperature of the hatching pond at 23-28°C. Practice has shown that establishing a temperature control system in the hatching pool and controlling the water temperature of the hatching pool at 23°C, 25°C, and 28°C can effectively prevent the fertilized eggs of largemouth bass from being infected with saprolegniasis and greatly improve the hatching survival rate of fertilized eggs. What needs to be explained is: in fact, during the production operation, the water temperature in the hatching pond is only controlled at 23-28°C when the outdoor water temperature is high in the later stage of reproduction; because in the early stage of reproduction, the water temperature in the spawning pond is about 18°C. The temp...

technical field

[0001] The invention belongs to the field of fish breeding, and in particular relates to a method for hatching fertilized eggs in the early breeding process of largemouth bass. Background technique

[0002] In the reproduction and production of fish, the fry bred earlier can be sold at a higher price due to the vacancy of the market, and can occupy the market as soon as possible to obtain more benefits. Therefore, more and more largemouth bass are brought to the market early through early breeding. During the artificial early breeding of largemouth bass, after the parent fish of largemouth bass are fertilized, the fertilized eggs of largemouth bass are fertilized through artificial fish nests. It is collected and then placed in a special hatching tank for hatching. However, during the hatching process, the fertilized eggs of largemouth bass are very susceptible to saprolegniasis, resulting in the death of fertilized eggs and a low hatching survival rate. Co...

Examples

Embodiment Construction

[0034] The hatching method comprises building a hatching greenhouse, putting artificial fish nests attached with fertilized eggs into a hatching pond in the hatching greenhouse, and establishing a temperature control system in the hatching greenhouse to control the water temperature of the hatching pond at 23-28°C. Practice has shown that establishing a temperature control system in the hatching pool and controlling the water temperature of the hatching pool at 23°C, 25°C, and 28°C can effectively prevent the fertilized eggs of largemouth bass from being infected with saprolegniasis and greatly improve the hatching survival rate of fertilized eggs. What needs to be explained is: in fact, during the production operation, the water temperature in the hatching pond is only controlled at 23-28°C when the outdoor water temperature is high in the later stage of reproduction; because in the early stage of reproduction, the water temperature in the spawning pond is about 18°C. The temp...

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