Artificial propagation method of pangasias sutchi

Abstract

The invention relates to an artificial propagation method of pangasias sutchi. The artificial propagation method comprises the following steps of selecting of parent fishes, culturing of parent fishes, artificial spawning induction, and artificial insemination; the zygotes are placed into a hatching tank to hatch for 50 to 60h in hatching water with temperature of 28 to 30 DEG C, and content of dissolved oxygen of 4mg / L. The artificial propagation method has the advantages that the fully-artificial hatching of the fishes can be realized, the condition of the parent fishes swallowing the fish fries is prohibited, the family line of the fishes can be established, the subsequent breeding of the family line is convenient, the relationship between the offsprings and the parents can be clearly known, the inbreeding can be controlled, and the genetical characterization decline of the offsprings produced by the inbreeding can be avoided.

Description

technical field [0001] The invention relates to an artificial breeding method for freshwater white shark scientific name Pangasius.sutchi Fowler, belonging to the technical field of aquatic breeding. Background technique [0002] Freshwater white sharks, also known as tiger sharks and badinfishes, belong to Siluriformes, Siluridae, and Miscanthus. They are mainly distributed in Southeast Asia. The meat is tender, delicious, and has no intermuscular spines. It is a valuable tropical economic fish in freshwater. , Egg stickiness. [0003] Breeding and hatching in the environment of inland still water ponds is prone to the following problems: 1) Due to the self-sinking and stickiness of freshwater white shark fertilized eggs, they will sink to the bottom of the water and stick to each other, and will soon be hypoxic. Death; 2) There are many impurities in the hatching water, or the water is turbid, and the impurities in the water are very easy to stick to the viscous egg membr...

AI Technical Summary

Problems solved by technology

[0003] Breeding and hatching in the environment of inland still water ponds is prone to the following problems: 1) Due to the self-sinking and stickiness of freshwater white shark fertilized eggs, they will sink to the bottom of the water and stick to each other, and will soon be hypoxic. Death; 2) There are many impurities in the hatching water, or the water is turbid, and the impurities in the water are very easy to stick to the viscous egg membrane, resulting in the death of the fertilized eggs due to hypoxia; 3) The fertilized eggs of each group of broodstock are placed together, and the genetic background of the seed Unclear, inbreeding cannot be controlled, and the germplasm of offspring produced by inbreeding will degenerate, and family breeding will not be possible in the future; 4) Omnivorous, after artificial breeding, if broodstock and fry are mixed together, broodstock will be swallowed The phenomenon of seedlings

[0004] There are no reports on the artificial reproduction methods of freshwater white sharks and other related technical details