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Method for controlling hoplobatrachus tigerinus sex ratio and application of method

A technology of sex ratio and control method, applied in application, climate change adaptation, fish farming, etc., can solve problems such as unreasonable sex ratio, and achieve the effect of shortening metamorphosis time, high metamorphosis rate, and short metamorphosis time

Inactive Publication Date: 2016-03-23
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the sex ratio of the tiger frog is unreasonable after metamorphosis, the invention provides a method for controlling the sex ratio of the tiger frog. The technical scheme adopted is as follows:

Method used

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  • Method for controlling hoplobatrachus tigerinus sex ratio and application of method
  • Method for controlling hoplobatrachus tigerinus sex ratio and application of method
  • Method for controlling hoplobatrachus tigerinus sex ratio and application of method

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Effect test

Embodiment 1

[0029] 1) The inventor used a heating device to heat the water in the three pools to stabilize the water temperature at 24°C, 29°C and 34°C respectively, and the fluctuation of the water temperature did not exceed 1°C. The inventor will collect newly hatched tiger frog tadpoles and put them into 3 indoor culture ponds at a density of 3 tails per liter. The total number of tadpoles in each culture pond is 540 tails.

[0030] 2) Take 50 tadpoles randomly every day to weigh and estimate the total weight of tadpoles in the pond, and calculate the daily feeding amount based on 5%-10% of the total weight of tadpoles. The metamorphosis time of tadpoles from 24°C water temperature was 44-62 days, the metamorphosis rate was 16%, and the body weight of juvenile frogs was 1.46-3.36 grams; the metamorphosis time of tadpoles from 29°C water temperature was 21-30 days, and the metamorphosis rate was 77%. The body weight of frogs is 0.90-1.97 grams; the metamorphosis time of tadpoles from 34...

Embodiment 2

[0033] 1) Use a heating device to heat the water in 6 pools, so that the water temperature in 3 pools is stable at 29°C, and the water temperature in the other 3 pools is stable at 34°C, and the fluctuation of water temperature does not exceed 1°C. The inventor will collect newly hatched tiger frog tadpoles and put them into 6 indoor culture ponds at a density of 4 tails per liter. The total number of tadpoles in each culture pond is 720 tails.

[0034] 2) Take 50 tadpoles randomly every day to weigh and estimate the total weight of tadpoles in the pond, and calculate the daily feeding amount based on 5%-10% of the total weight of tadpoles.

[0035] 3) Dissolve 0.08-0.12 mg of testosterone or letrozole in 100 ml of absolute alcohol, spray the drug-containing absolute alcohol evenly on the surface of 1 gram of feed with a watering can, and place the feed sprayed with the drug in an oven at 65°C Fully dry, so that the alcohol is completely volatilized, and it is configured as a ...

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Abstract

The invention discloses a method for controlling hoplobatrachus tigerinus sex ratio and application of the method and belongs to the technical field of hoplobatrachus tigerinus artificial culture. The method includes: placing hatched tadpoles into a cultivation pond according to cultivation density of 3-4 / liter, using feed containing 0.08-0.12 milligram of testosterone or letrozole in each gram to feed the tadpoles under 29-34 DEG C for two weeks, and then using feed which does not contain the testosterone or letrozole to feed the tadpoles until metamorphosis is completed. By the method, the sex ratio after the metamorphosis can be adjusted effectively, and the cultivation efficiency of hoplobatrachus tigerinus can be increased greatly. Compared with feeding under natural conditions, the method has the advantages that a metamorphosis cycle can be shortened greatly, and metamorphosis rate can be increased.

Description

technical field [0001] The invention relates to a method and application for controlling the sex ratio of tiger frogs, and belongs to the technical field of tiger frog artificial breeding. Background technique [0002] The tiger frog is not only a second-class protected animal in my country, but also an important economic frog, which has a certain distribution in the farmlands of southern my country. Tiger frogs are huge in size and delicious in meat, and have become the main amphibians caught in southern my country. Only Guangdong and Guangxi provinces consume hundreds of tons of wild tiger frogs. In addition, with the continuous destruction of the ecological environment of the habitat, the population of tiger frogs is decreasing day by day. [0003] Therefore, the artificial breeding of tiger frogs has developed rapidly in some parts of the south. Most farmers usually place the collected multi-litter tiger frog tadpoles in outdoor ponds for artificial breeding. The water...

Claims

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Application Information

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IPC IPC(8): A01K67/02A01K61/00
CPCY02A40/81A01K67/02A01K61/00
Inventor 丁国骅林植华陈智强李银蝶
Owner LISHUI UNIV
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