Hatching method of spotted longbarbel catfish fertilized eggs

Abstract

The invention discloses a hatching method of spotted longbarbel catfish fertilized eggs. The method includes the steps: 1 disinfecting a hatching container by the aid of potassium permanganate solution with the mass concentration of 0.001-0.01% at an earlier hatching stage, pouring water into the hatching container, and enabling a water surface to be 3-5cm higher than the spotted longbarbel catfish fertilized eggs; 2 placing the spotted longbarbel catfish fertilized eggs into the hatching container, adjusting salt concentration of water in the hatching container by the aid of sodium chloride or potassium chloride; 3 controlling the temperature of the water in the hatching container to be 20-25 DEG C, controlling a dissolved oxygen content to be 4-7mg / L, irradiating the water by a lamp, avoiding the water from flowing, and avoiding sunshine from directly irradiating; 4 changing water once in the morning and evening every day; 5 transferring the spotted longbarbel catfish fertilized eggsafter emergence into a new hatching container after the fertilized eggs begin to emerge, and feeding the fertilized eggs after emergence with baits with spotted longbarbel catfish fertilized egg skinextracts every day until the fertilized eggs after emergence grow into young spotted longbarbel catfish. According to the method, hatching conditions of the spotted longbarbel catfish fertilized eggscan be optimized, the fertilized eggs in emerging are protected, the hatching yield and the hatching quality of the spotted longbarbel catfish fertilized eggs are improved, and hatching time is shortened.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for hatching fertilized eggs of the squid. Background technique [0002] Banyan, with tender meat and delicious taste, is now rare in the wild. It is a large carnivorous economic fish with a relatively mild temperament. It has no scales, tender meat, delicious taste, and high nutritional value. It enjoys the reputation of "the king of fresh water". It is one of the "Four Famous Fishes" in the Pearl River. There are many rivers in Guangxi in the upper reaches of the Xijiang River in the Pearl River system. In order to meet the extensive demands of the domestic and foreign markets for the species, the technology of artificial breeding of the species has also been developed rapidly. In the prior art, the breeding of the species is also hatched by artificial insemination, but the existing artificial insemination hatch The process is relatively rough, just c...

AI Technical Summary

Problems solved by technology

In order to meet the extensive demands of the domestic and foreign markets for the species, the technology of artificial breeding of the species has also been developed rapidly. In the prior art, the breeding of the species is also hatched by artificial insemination, but the existing artificial insemination hatch The process is relatively rough, just collect the semen of the male fish and the eggs of the female fish and then hatch in the hatching room. The process conditions are relatively simple, so the yield and quality of the produced fry are not high

In addition, the hatching quality of fertilized eggs hatched under natural conditions will be different with the change of conditions, and the hatching time of fertilized eggs will be prolonged