西门塔尔牛改良当地牛效果初报

Primary Report on Crossbreeding Effect of Indigenious Cattle by Simmental

调查分析了彬县西黄F1牛在体型外貌、生长发育上与本地黄牛的差异。结果表明,西黄F_1改良牛毛色变杂,体型得到改进,生长发育加快。西黄F_1母牛平均初生重为32.95kg,公牛为36.93kg,分别比秦改母牛、公牛初生重提高42.21%和61.97%;西黄F_1公、母牛6月龄体重分别为150.43kg和123.7kg,分别比同龄秦改公、母牛提高22.91%和10.3%。

The difference of conformation, growth and development between indigeneous cattle and its F_1 crossbreds by Simmental were investigated and analyzed. Results showed that, the coat color was complicated, conformation improved, growth and develpment were ineresed for F_1 crossbreds compared with indigeneous cattle. Body weight of male and female F_1 crossbreds were increased by 61.97% and 42.21% resp. at birth and 22. 91% and 10.3% resp. at 6—month compared with indigeneous cattle at the same ages.