湘南黄牛杂交组合筛选研究

Studies of Screening on Cross Combination of Xiangnan Cattle

为了确定适宜的湘南黄牛杂交组合,分别以安格斯、西门塔尔、短角、利木赞等4个肉用牛品种为父本,湘南黄牛为母本开展杂交试验,并对改良牛的体重和体尺进行测定,且进行了数据分析。结果表明:安本杂、西门塔尔、短角、利木赞牛对改良湘南黄牛的杂交优势十分明显,其中西门塔尔牛的改良效果最好。F1代公母牛初生、6月龄、12月龄、18月龄、24月龄体重较同龄湘南黄牛公母牛分别提高了72.62%和72.43%、50.25%和47.80%5、4.34%和59.46%、83.24%和74.68%、72.65%和76.23%,差异显著(P<0.05)。西门塔尔F1代公母牛24月龄体高、胸围、体斜长较同龄湘南黄牛公母牛提高了11.46%和12.02%、22.60%和23.51%、14.87%和15.54%,差异显著(P<0.05)。

In order to screen the best cross with Xiangnan cattle（Angus, Simmental, Short combination, crossbreds F1 of different beef cattle breeds Horn,Limousin） were investigated in southern of Hunan province. The result showed that the crossbred F1, compared with the purebred Xiangnan cattle, had significant heterosis, and the hybrid of Simmental with Xiangnan cattle was the best. The body weight of crossbred F1 at the age of birth, 6,12,18,24 months, compared with Xiangnan cattle, increased by 72. 62%, 50.25%, 54.34%, 83.24%, 72.65% for bull and 72.43%, 47.80%, 59.46%, 74.68%, 76.23% for cow, all had significant difference（ P d0.05）. The withers height,heart girth and body length of hybrid of Simmental with Xiangnan cattle increased by 11.46%, 22. 60%, 14. 87% for bull and 12. 02%, 23. 51%,15. 54% for cow（ P 〈0. 05）.