Method for cultivating gender-controlled dzo by hybridizing common cattle and yak

Abstract

The invention discloses a method for cultivating a gender-controlled dzo by hybridizing a common cattle and a yak. The common cattle serves as a male parent, the yak serves as a female parent, and a male parent frozen semen containing an X or Y chromosome is input in a uterus of the female parent to complete semen deposition; and when a male dzo is needed, the male parent frozen semen containing the Y chromosome is adopted, and when a female dzo is needed, the male parent frozen semen containing the X chromosome is adopted. An accuracy rate for separating semen containing the X and Y chromosome is higher than 90% at present, so that more than 90% of the dzo cultivated by using the X chromosome to complete semen deposition is female, more than 90% of the dzo cultivated by using the Y chromosome to complete semen deposition is male, accordingly sexualization male dzos and female dzos can be cultivated through the method, the male dzos and the female dzos with different male parents can be cultivated according to needs, and quantity of high-quality gender-controlled dzos can be rapidly increased.

Description

technical field [0001] The invention relates to a method for crossbreeding common cattle and yaks to produce Pyak, in particular to a method for crossbreeding common cattle and yaks to produce Pyak. Background technique [0002] P ox is the offspring of common cattle and yak through interspecific hybridization. It has obvious hybrid advantage, and its milk and meat production capacity and service ability are better than yak. Pyaks play an extremely important role in people's production and life: First, castrated male Pyaks not only have the same adaptability to the plateau climate and environment as yaks, but also have the advantages of being more docile and easy to control, so they are used in pastoral areas. P cattle are often used as pack cattle, and are used to plow land in semi-agricultural and semi-pastoral areas or agricultural areas; second, for milk, compared with yaks, the milk production of female P cows will double, and the milk production cycle Long, it can bet...

AI Technical Summary

Problems solved by technology

However, under the existing production technology conditions, it is still impossible to control the sex of the cattle according to the actual production needs of the market or pastoral areas