Cultivation method of Rana grylio

Abstract

The invention discloses a cultivation method of Rana grylio. The cultivation method comprises the following steps: (1) completely eradicating consanguineous pairing of parent fogs, so as to avoid genetical characterization decline; (2) warming indoors for concentrated hugging and egging; (3) warming in green houses, and hatching with running water; (4) putting seedlings into pools for food conversion; (5) cultivating and breeding at high density in the middle period of tadpoles; (6) quickly transforming from the tadpoles; (7) cultivating small fogs at high density; (8) enabling the fogs to overwinter: deepening a water level, warming a water body, feeding as usual in winter, and effectively preventing the occurrence of diseases; and (9) quickly fattening the fogs without pollution before appearing on the market. The method can produce green and pollution-free Rana grylio, so that the pollution to the environment in the cultivation process is reduced, and the economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of frog cultivation, and in particular relates to a method for cultivating American frogs. Background technique [0002] American frogs are also known as river frogs and water frogs. Originally produced in the United States, it was introduced into my country in the late 1980s. Its meat is tender and delicious, and it is a first-class edible frog. It has been promoted and cultivated all over the country. The American frog has large body size, fast growth, delicious taste and high protein content. It is a high-quality and efficient economically farmed frog. With the fierce competition in the industry, some old farmers have outdated farming techniques, resulting in low production efficiency, some lost their money, and some farmers did not hesitate to use some prohibited drugs, which led to the accumulation of harmful substances in the frogs, resulting in a large number of deaths, and also deteriorated the qual...

AI Technical Summary

Problems solved by technology

With the fierce competition in the industry, some old farmers have outdated farming techniques, resulting in low production efficiency, some lost their money, and some farmers did not hesitate to use some prohibited drugs, which led to the accumulation of harmful substances in the frogs, resulting in a large number of deaths, and also deteriorated the quality of the breeding water. to serious pollution, and indirectly damage the surrounding ecological environment

[0003] At present, artificially cultivated American frog species are mainly imported from the United States. Due to the long-term breeding and mixed breeding of single or multi-species American frogs, their close relatives and blood types are similarly mated and reproduced, resulting in germplasm degradation and weak disease resistance. , The survival rate is low, generally only 30-40%; the production speed is slow, from ovulation, fertilization, hatching, tadpoles, to commercial American frogs, generally takes about one year