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Calf gender-determined reproduction method

A calf and male technology, applied in the field of qualitative breeding, can solve problems such as qualitative breeding gaps, achieve the effect of promoting development, promoting the process of variety improvement, and improving economic benefits

Inactive Publication Date: 2010-07-07
赵有权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the arginine method can increase the yield of female calves to about 80%, there is still a considerable gap from qualitative breeding

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] The qualitative breeding method for calves of the present invention is characterized in that the pH value of the maternal vaginal mucus is determined before mating, and when the pH value is greater than 7, the calf produced by the mating is a male calf; when the pH value is less than 7, the calf produced by the mating is male; The calves are female calves.

[0014] Scientists have studied sex-determining factors and found that during the reproductive process of mammalian singletons, male individuals form sperm cells containing X and Y chromosomes after subtractive separation, and female individuals produce an egg containing X chromosomes after subtractive separation. During the fertilization process, the XY-type zygote develops into a male individual, and the XX-type zygote develops into a female individual. The key to gender distinction is the ...

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Abstract

The invention discloses a calf gender-determined reproduction method which is used for the artificial reproduction of calves. The technical scheme is that the pH value of the vaginal mucus of a maternal body is determined before mating; when the pH value is larger than 7, the born calves after mating are male calves; and when the pH valve is less than 7, the born calves after mating are female calves. The invention has the advantages that the gender-determined reproduction can be accurately realized, the development of the cattle raising industry is effectively promoted, the progress of the breed improvement is promoted and the economic benefit of cattle raisers is increased; and the technical measures are simple and feasible, and the popularization and the application in rural areas are facilitated.

Description

technical field [0001] The invention relates to a qualitative breeding method for calf breeding. Background technique [0002] With the development of the cattle industry, in order to improve the economic benefits of the cattle industry, efforts have been made to improve breeds. However, due to the widespread application of frozen semen breeding technology, the proportion of female calves produced by cattle has declined. Statistics show that the rate of female calves produced by cattle bred with frozen semen is only 32.4-47%. This will undoubtedly severely restrict the development of the cattle industry, affect the process of variety improvement in various places, and also affect the improvement of the economic benefits of cattle farmers. [0003] In recent years, sex control technology has been gradually applied in breeding calves. Gender control refers to a biological technology that allows the mother to breed offspring of the desired sex according to people's wishes thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61D19/00
Inventor 赵有权
Owner 赵有权
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