短角牛级进杂交云南富源山地黄牛的效果观测

Observations on Improvement Performance of Yunnan Fuyuan Local Cattle upgraded by Milk Shorthorn

2000～2002年集中观测了3代短角牛级进杂交云南富源山地黄牛的改良效果,测定了本地黄牛和短本F1、F2、F3的的初生、6月龄、12月龄、24月龄公母牛的体尺、体重,并选择6月龄断奶牛进行育肥测定,结果显示:日增重短本F1、F2、F3分别比本地黄牛提高469.1g、603.1g和648.4g。代与代之间的改进提高幅度依次为:F1>F2>F3。

We observed and examined the body measurement and weight of local cattle and cross generation F\-1,F\-2 and F\-3 between local and shorthorn cattle at birth,six,twelve and twenty four months old. Weaned cattle of six months old were selected to be the test animal. The result showed that the daily gain of F\-1,F\-2 and F\-3 was 469.1g,603.1 g and 648.4 g, more than that of local cattle. The improved scope was F\-1>F\-2>F\-3,which was the scientific basis to improve local beef cattle.