青海省贵南县高寒牧区枯草期欧拉型藏羊羔羊补饲育肥试验研究

对青海省贵南县欧拉型藏羊羔羊在牧草枯黄期进行了补饲育肥效果试验。结果表明，牧草枯黄期羔羊放牧加补饲精料颗粒料，自由采食，短期育肥60d，11月龄平均体重和日增重分别达到40．58kg和71．83g（P〈0．01），较对照组提高9．41蚝和109．83g（P〈O．01），增重效果非常明显；胴体重和屠宰率达到17．71kg和43．55％，分别比对照组提高5．69kg和5．09％（P〈0．05），每只羊多收入85．80元，经济效益十分显著。

Supplementary Fattening Experiment on Oula Type of Tibetan Sheep Lamb in Guinan Alpine Region of Qinghai during Grass Withering Period

Supplementary fattening experiment on Oula type of Tibetan sheep lamb in Guinan alpine region of Qinghai during grass withering period was carried out. Results showed that the lambs during grass withering period were fed through grazing and supplying beneficiated material particles with ad libitum feeding, the average weight and daily gain of 11 -month sheep after 60 days reached 40.58 kg and 71.83 g respectively, which were increased by 9.41 kg and 109.83 g compared with control （P〈0.01）, so the gaining effect was very obvious; the carcass weight and dressing percentage reached 17.71 kg and 43.65%, which were increased by 5.69 kg and 5.09% compared with control （P〈0.05）, and every sheep could gain 86.80 yuan more than control, so the economic benefit was very significant.