利木赞牛改良陕北本地黄牛效果分析

The Analysis of Improvement Effect of North of Shaanxi Local Cattle and Limousin

对榆林市神木县地区和延安地区相同营养水平下的298头利木赞牛改良陕北本地黄牛F1代及陕北本地黄牛的体重和部分体尺指标进行了测定,并进行数据分析。结果表明:利木赞牛与陕北本地黄牛杂交F1代的体高、体长、胸围和髋宽均比陕北本地黄牛有所提高,且差异均达到极显著水平(P<0.01);初生牛的平均体重公牛43.95 kg,母牛41.11 kg,分别比本地黄牛提高126.5%、120.78%,改良效果十分显著。

The survey statistics to compare the differences in growth performance in 298 North of ShanXi Local Cattle and Crossbred F1 of North of ShanXi Local Cattle and Limousin fed at the shenmu county and yan＇an with identical and different nutritional levels diet , and analysis the date . Significant difference was found between North of ShanXi Local Cattle and Crossbred F1 of North of ShanXi Local Cattle and Limousin fed in body height , body length , circumference and width of hipbone （ P 〈0.01）. Statistics 40 Crossbreed F1 of North of ShanXi Local Cattle and Limousin fed body weight when boring： bull 43.95 kg , cow 41.11 kg. It respectively increased 126.5% , 120.78% compared with local cattle. Improvement effect is very significantly.