Rana nigromaculata spawn hatching method

Abstract

Provided is a rana nigromaculata spawn hatching method. The method comprises the steps that after rana nigromaculata lays zygotes in a spawning pond for 2 h to 3 h, zygote masses are collected; the zygote masses are put into a net cage to be divided into zygote granules, the zygote granules are quickly transferred into a hatching pond to be hatched, the embryo development condition is observed during hatching, dead zygotes are removed in time, and when the zygotes are about to be hatched into tadpoles, micro-flowing water is kept in the hatching pond or water is replaced. The method is simple, convenient to operate, high in operability, easy to master and high in hatchability which is at 90% or above, hatching quality, tadpole survival rate which is at 95% or above and water quality; the phenomena that spawn membranes of rana nigromaculata spawns are softened, ova are flat, the spawn membranes of the rana nigromaculata spawns are broken, and the spawn masses are omitted are effectively avoided, and torrential rain and sun exposure are avoided; hatching synchronization of the tadpoles can be effectively guaranteed, and the phenomenon that growth of the tadpoles is affected due to the fact that the sizes of the tadpoles are not uniform is avoided.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for hatching eggs of the black-spotted frog. Background technique [0002] The black-spotted frog is a very common frog, belonging to the frog family, anura, and amphibians. The black-spotted frog has tender meat, less fat, low sugar, and high protein content. It has the effects of clearing away heat and detoxification, reducing swelling and relieving pain. The artificial breeding of black-spotted frog is not only simple in technology, but also has fast economic benefits. Therefore, the breeding of black-spotted frog is an aquatic product. Breeding hotspots. [0003] The breeding of black-spotted frogs includes the selection of species of frogs, the cultivation of species of frogs, the fertilization of eggs, the hatching of frog eggs, the raising of tadpoles, the management of young frogs and the management of adult frogs, wherein the hatching of frog eggs directly affects th...

AI Technical Summary

Problems solved by technology

In the operation of the commonly used hatching method of frog eggs, it is easy to make the egg membrane of the frog eggs soften, the eggs collapse, and it is easy to break the egg membrane of the frog eggs, resulting in the death of the egg rupture, affecting the hatching, and causing the hatching of the frog eggs The rate is not high; in the hatching process, the water quality cannot be guaranteed, which will easily cause hypoxia in the water and affect the survival rate of tadpoles. In addition, it is difficult to ensure the simultaneous hatching of frog eggs in the hatching pool, which may cause hatching in sequence, and tadpoles are of different sizes. Affects the growth of tadpoles and ultimately, the quantity and quality of adult frogs