Viscidity-removing method of viscous fertilized fish roe and its equipment

Abstract

The present invention relates to a viscosity-removing method for viscose fertilized fish roe and its equipment. Said method includes the following steps: throwing lots of oestrous fishes in roe-laying pool with smooth pool wall, in effect period and before date of laying roe of parent fish inducing the parent fish to go on fish nest to lay roe, making micro water flow to form recirculating water body, and utilizing mucus secreted by parent fish body surface and seminal fluid of male fish to form mixed liquid body in the pool water so as to make the fertilized fish roe naturally remove viscosity, collecting fertilized fish roe in roe-collecting box, repeatedly washing so as obtain the clean transparent fish rod. Said equipment includes roe-laying pool with water-discharging valve, water pumps and inductive fish nest, etc.

Description

technical field [0001] The invention belongs to the field of fish farming, and relates to a method and a device for debonding sticky fertilized fish eggs before hatching. Background technique [0002] The conventional breeding techniques for the hatching of sticky fish eggs such as carp and crucian carp mostly use artificial insemination and artificial egg extrusion to obtain fertilized fish eggs, and debonding of sticky fertilized fish eggs is a difficult problem that the industry has been trying to overcome. Debonding with yellow mud or talc solution as a debonding agent brings new problems, that is, a thick layer of debonding material is attached to the outside of the fish egg membrane, which makes the fish eggs respiration and physiological metabolism during normal development. Being fatally affected, the hatching rate is greatly reduced, which is time-consuming, labor-intensive, and ineffective. Therefore, the industry is in urgent need of a time-saving, labor-saving a...

AI Technical Summary

Problems solved by technology

[0002] Conventional breeding techniques for hatching viscous fish eggs such as carp and crucian carp mostly adopt artificial insemination and artificial egg squeezing to obtain fertilized fish eggs, and debonding viscous fertilized fish eggs is a difficult problem that the industry has been trying to overcome. Use yellow mud or talcum powder solution as a debonding agent to debond, but this also brings new problems, that is, a thick layer of debonding material is attached to the fish egg membrane, which makes the respiration and physiological metabolism of fish eggs in normal development difficult. Being fatally affected, the hatching rate is greatly reduced, which can be described as time-consuming, laborious and ineffective

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