北京郊区畜禽品种生物多样性状况的分析

畜禽品种资源的多样性是多样性的重要组成部分,其多样性的保护直接关系到畜牧业可持续发展,攸关到人类社会的政治经济生活。本研究重点调查了北京市地方畜禽品种的状况,并按照群体近交系数的大小以及相应有效群体大小的方法分析评价了畜禽品种资源的受胁程度,研究发现北京市目前的6个地方品种资源中,除了北京鸭、本地小尾绵羊和本地山羊以外,其余的三个畜禽品种资源北京油鸡、本地黄牛和本地兔都受到了不同程度的威胁。其中本地黄牛和本地兔所受到威胁最为严重,为“严重威胁”的等级,北京油鸡处在“最低威胁程度等级”。

Analysis for Diversity of Beijing's Animal Breed Resources

The diversity of animal breed resources is an important component of bio-diversity.Its diversity protection directly relates to the sustainable development of animal husbandry,and resultantly affects the political and economic life of the human society.This research first investigated the state of animal breed resources in Beijing,and then analyzed and evaluated the threatened degree of animal breed based on the inbreeding coefficient and the corresponding size of effective population.The results showed that among the 6 local animal breed resources of Beijing,3 breed resources including Beijing You Chicken,local yellow cattle and local rabbit were being threatened to different degrees except for Beijing duck,local small tail sheep and local goat.The breed resources of local yellow cattle and local rabbit were most severely threatened,whereas Beijing fatty chicken was least threatened.