近交在畜牧业中的应用及防止衰退的措施

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英文篇名：Application of Inbreeding in Animal Husbandry and Measures to Prevent Recession 作者：刘晓玲 英文作者：LIU Xiao-ling;Jichuan Town Animal Husbandry and Veterinary Station,Tongwei; 关键词：畜牧业 ; 应用 ; 近交衰退 ; 防止措施 英文关键词：livestock husbandry;;application;;inbreeding recession;;prevention measures 中文刊名：XMSZ 英文刊名：Journal of Animal Science and Veterinary Medicine 机构：通渭县鸡川镇畜牧兽医站; 出版日期：2019-01-10 出版单位：畜牧兽医杂志 年：2019 期：v.38;No.186 语种：中文; 页：XMSZ201901023 页数：2 CN：01 ISSN：61-1085/S 分类号：80-81

摘要

近交是指5代以内双方具有共同祖先的公母畜交配,在培育品种或品系过程中,常常采用近交以固定某些优良性状,或藉以增加某个优良种畜的血统。近交虽是育种工作中的一种有力措施,但使用不当就会出现近交衰退现象。因此,不能将其作为生产中的经常性措施,一般只在育种场采用,在商品场不宜采用。
        Inbreeding refers to the mating of males and females that have common ancestors within five generations.In breeding varieties or strains,inbreeding is often used to fix certain good traits,or to increase the pedigree of an excellent breeding stock.Although inbreeding is a powerful measure in breeding work,inappropriate use will cause recession.Therefore,it cannot be used as a regular measure in production.It is generally adopted only in breeding farms and is not suitable for use in commodity farms.

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