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A Regulatory Method to Improve Eel's Female Transformation into Male Efficiency

A technology of rice field eel and male, which is applied in the field of regulation to improve the efficiency of conversion of rice field eels from females to males, and can solve problems such as constraints, high production costs, and incompatibility

Inactive Publication Date: 2016-08-24
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, males are large, do not match with females, and the production cost is high, which has become one of the key factors restricting their artificial seed breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Regulate the environment

[0022] 1) Water body and area: Ponds, ditches, lakes, reservoirs, and rivers are all acceptable. The area is not limited. The water depth is more than 1m. The water source meets the national fishery water quality standards.

[0023] 2) Disinfection of water bodies: Disinfect small water bodies such as ponds and ditches with quicklime from February to March, and inject new water after 7 days. Large water bodies such as lakes, reservoirs, and rivers do not need to be disinfected.

[0024] 3) Set up net cages: Set up net cages in various water bodies, with a length, width, and depth of 2m×2m×1m, polyethylene mesh square mesh, side length 1.4mm, without a cover, and fixed in the pond with bamboo or wood. The upper end of the cage is 0.4-0.5m above the water surface.

[0025] 4) Plant aquatic plants: plant aquatic peanuts in the net cage, the area is about 80% of the net cage.

[0026] 2. Control specifications and density

[0027] 1) Source...

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PUM

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Abstract

The invention discloses a regulation and control method for improving the efficiency of converting female ricefield eel into male ricefield eel. According to the method, the optimum regulation and control environment is selected, the ricefield eel specification is selected reasonably, the released density is conducted reasonably, and the proper reduction of protein level in fodder, scientific feeding, strict management, reinforcing the spring regulation and control timely and the like are conducted; mass high-quality female parents are obtained, the rate of converting the female ricefield eel into the male ricefield eel reaches 78%, the male individual is matched with the female individual in weight, and the requirement for male parents of artificial ricefield eel breeding is met.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a control method for improving the conversion efficiency of eels from females to males. Background technique [0002] Rice field eel is one of the important aquatic products consumed in domestic and foreign markets, and the supply exceeds demand, but seedlings have become a bottleneck problem restricting the rice field eel industry. At present, wild seedlings cannot meet the needs of eel breeding, and the problem of artificial seedlings must be solved. And to solve the artificial seedlings, we must first solve the sex reversal of rice field eels. All rice field eels are female within one year after birth, and gradually transform into males at the age of 2 and above, and some even take 6-8 years to transform into males. Therefore, males are large, do not match with females, and the production cost is high, which has become one of the key factors restricting their...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 龚世园何绪刚储张杰袁汉文
Owner HUAZHONG AGRI UNIV