优良地方畜禽品种和引入的优良育成品种同样都是宝贵的品种资源,应给予重视保存和不断地进行选育提高。但往往由于只顾眼前的杂交利用,忘记了杂交组合中父本及母本品种的保存和选育提高,加上缺乏遗传育种的基础知识,用非纯种的公畜滥配,造成局部地区原有地方畜禽品种的严重混杂,这对地方优良品种的保存以及进一步利用其杂种优势极为不利。 Good local breeds of livestock and introduced good breeding varieties are also valuable varieties of resources, should give emphasis on preservation and continuous breeding. However, often due to the current hybridization, forgotten the hybrid combination of paternal and maternal species conservation and breeding increased, coupled with the lack of basic knowledge of genetic breeding, non-purebred male abuse, resulting in the original local Serious mixed local breeds of livestock, which is extremely good for the preservation of local varieties and further use of their heterosis.