The paper analyses the milk yield performance of the Simmental and local cattle in Yantai. Difference and potential are also illustrated, hence the measures of improving milk yield in proposed.
本文对烟台西杂牛的产奶性能进行了分析，找出了差距及存在的潜力，提出了提高产奶量的措施。
The polymorphism of the insulin-like growth factor binding protein 3 (IGFBP3) gene in Nanyang cattle, Luxi cattle and Chinese Simmental was analyzed by PCR-SSCP.
采用PCR-SSCP技术分析了牛类胰岛素生长因子结合蛋白3（IGFBP3）基因在南阳牛、鲁西牛和中国西门塔尔牛3个牛品种中的遗传多态性。
The body weight and body sizes of F1 crossbreds of Liping yellow cattle with Simmental or Angus or Limousin at 0,6,12,18,24 month-old were measured.
对农户饲养的黎平黄牛及其与西门塔尔牛、安格斯牛、利木赞牛的杂交F_1代的初生、6月龄、12月龄、18月龄、24月龄的体重、体尺进行了测定，结果表明；
The body weight and body sizes of F1 crossbreds of Liping yellow cattle with Simmental or Angus or Limousin at 0,6,12,18,24 month-old were measured.
对农户饲养的黎平黄牛及其与西门塔尔牛、安格斯牛、利木赞牛的杂交F_1代的初生、6月龄、12月龄、18月龄、24月龄的体重、体尺进行了测定，结果表明；
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