Method for preventing roes from being attacked by saprolegniasis

Abstract

The invention belongs to the field of fish breeding, and particularly relates to a method for preventing roes from being attacked by saprolegniasis.The method for preventing roes from being attacked by saprolegniasis includes the operation steps that a pond is filled with water, niclosamide is put into a water body in the pond, and the input amount of niclosamide is controlled in the mode that 2-3 kg niclosamide is put in per meter of water depth in each mu of pond; 7-10 days later, copper sulfate is put into the water body in the pond, and 0.75-1.25 kg of copper sulfate is put in per meter of water depth in each mu of pond; 4-5 days later, chlorine dioxide is put into the water body in the pond for disinfection, and the input amount of chlorine dioxide is 150-200 g; 2 days later, the water body is used for the roe hatching process.Pathogene can be killed at the water source, the method is widely applied in the fish breeding process, particularly for famous and special fishes such as micropterus salmoide laying viscid roes and odontobutis obscura with a long roe hatching cycle, the problem that the roes are attacked by saprolegniasis in the hatching process is effectively solved by using treated water body for roe hatching, and the hatching rate is high.

Description

technical field [0001] The invention belongs to the field of fish breeding, and in particular relates to a method for preventing saprolegniasis in fish eggs during reproduction. Background technique [0002] Saprolegniasis is widely found in freshwater or brackish waters and moist soils all over the world. It is a kind of common mold that saprophytes on dead organic matter. In the process of fish rearing, fish eggs are very easy to encounter Saprolegniasis infection and get Saprolegniasis. The traditional method of controlling fish saprolegniasis is to control the hatching temperature of fish eggs, but in the early stage of breeding, the water temperature in the outer pond is low, the heating process is troublesome and the effect is not ideal; moreover, this method is not suitable for a long incubation period Channa roe. Channa is a small fish with very delicious meat. The hatching cycle of the eggs of this fish is usually 28-30 days. The long hatching period leads to the ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a method for preventing fish eggs from suffering from saprolegniasis in the breeding process. The method can be widely used in the fish breeding process, especially for the long hatching period of fish eggs. The method effectively solves the problem of saprolegniasis in the hatching process of fish eggs