河南大尾寒羊是我省优良的地方绵羊品种，具有独特的种质特性和较高的保种利用价值。
HeNan Big Tail Sheep is a fine regional breed in our province. It has unique strain character and higher value of protection and utilization.
以BMPR - IB基因作为候选基因，采用PCR - RFLP方法检测其在萨福克羊、小尾寒羊及萨寒f 1代杂交羊中的多态性分布，分析其与产羔数的相关性。
With BMPR-IB gene as candidate gene, its polymorphism distribution in Suffolk sheep, small-tail Han sheep and their F1 hybrid germination were detected by using the method of PCR-RFLP.
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