Bos frontalis and bos indicus and bostaurus inter-species distant hybridization method

Abstract

The embodiment of the invention provides a bos frontalis and bos indicus and bostaurus inter-species distant hybridization method. The method comprises the steps of cross parent selection, cow estrus synchronization treatment, hybridization method, pregnancy check, growth performance of cross-bred cattles, and karyotype and paternity testing method. The stress resistance of inter-species hybrid of cultivated bos frontalis and Brahman and bostaurus is high, production performance is good, meat quality is good, and reproductive performance of cows is good, while bulls are sterile. The scientific basis is provided for reasonable utilization and crossbreeding of local fine breed bos frontalis, bos indicus and bostaurus in China.

Description

technical field [0001] The invention relates to the field of hybridization methods, in particular to a method for interspecies distant hybridization of large calf, zebu, and yellow cattle. Background technique [0002] Big cattle ( Bosfrontalis ), whose English name is mithun or gayal, is a semi-wild rare breed of cattle that has not been artificially cultivated, mainly distributed in India, Myanmar, Bangladesh and China. In my country, the large cattle are only distributed in the mountainous areas of the Dulong River and Nujiang River Basin in Yunnan Province, so they are also called Dulong cattle. Chromosome 2n=58 of large cattle, between Zebu ( Bosindicus ),cattle( Bostaurus ) between 2n=60 and 2n=56 of Yunnan bison. It is considered to be an independent species in the genus Bovis. It has strong stress resistance, good reproductive performance, long reproductive life, typical meat shape and good meat production performance. It is a precious beef cattle germplasm res...

AI Technical Summary

Problems solved by technology

On the one hand, the population of large-breed cattle in my country is very limited. In addition, the systematic research and application of cross-breeding utilization of large-breed cattle, cattle, and zebu is lagging behind. The excellent genetic resources of purebred large-breed bulls have not been effectively utilized for a long time

On the other hand, my country's climate and environment are complex and diverse, forming various types of cattle, but the cattle are small in size, slow in growth, and low in individual product rate