摘要
牛是单胎物种,但牛在繁殖过程中会产双胎.在某些特定的生产条件下,双胎可能被认为是一种理想的性状,因为该性状会增加每头母牛的断奶牛重从而提高盈利能力.但目前有关对牛双胎机制的相关研究结果尚不明晰.文章综述了有关肉牛、奶牛双胎的研究意义、常用的繁殖技术、双胎相关基因的研究历史与现状及存在的问题,以期对牛的繁殖性能改良、繁殖管理效率提高以及基因功能等研究提供参考.
Abstract
Cattle is a monotocous species,occasionally,the reproductive process in cattle results in the birth of twins.Under some beef cattle production scenarios,twinning might be considered a desirable trait that enhances profitability by increasing weaned calf weight that is produced per cow.However,the current research results on the mechanism of bovine twins are not yet clear.This article reviews the research significance,commonly used reproductive techniques,research history and current status of twin related genes,and existing problems related to beef cattle and dairy cows,to provide reference for improving the reproductive performance,enhancing reproductive management efficiency,and studying gene function of cattle.
国家科技期刊平台
NSTL
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