红豆草茬地放牧结合补饲青干草对草地羔羊育肥效果的研究

Effects of Sainfoin Stubble Grazing Supplemented with Green Hay on Grasslamb Fattening

1986～1987年期间在甘肃农大牧草站进行了以红豆草茬地放牧结合补饲青干草对草地羔羊育肥效果的试验。比较了在放牧基础上3种补饲处理(即单燕麦草、单红豆草和燕麦+红豆草混合干草)对两种类型羔羊(即甘肃高山细毛羊和边甘杂种一代羔羊)增重和肉用性能的影响。试验结果表明,7月龄边甘杂种羔羊或9月龄甘高羔羊的期末活重均已超过35公斤,胴体重超过17公斤,屠宰率为47％～49％。

During 1986—1987, experiment to examine the effects of sainfoin stubble grazing supplemented with green hay on grasslamb fattening was conducted on the Herbage Farm of Gansu Agricultural University. The effects of three different supplementing feeds (i. c. pure oats, pure sainfoin hay and the mixed hay of oats and sainfoin) on the body weight gain and meat quality of two types of lamb(i. c. Gansu Fine Wool (GF) lamb and lamb of the crossbred F1 from Border Leicester ram with Gansu Fine Wool ewes (BG)). The results showed that 7 —month—old BG lamb or 9 —month—old GF lamb both had the final live weight of more than 35 KG, carcass output of more than 17 KG and dressing percentage of 47 — 49%. Supplementing mixed hay showed significantly better results (P<0. 05) compared with other two treatments but the difference between two lamb types was not significant (P>0.05). Cost—profit analysis indicated that the profit rate of grass lamb fattening was 17.13%.