Comparison of feeding effect on Gansu alpine fine wool sheep between grazing and greenhouse feeding during withered season

One hundred and eighty Gansu Alpine fine wool sheep ewes，38 replacement ewes and 40 lambs were selected from the farmers in Sunan Yugur autonomous County，divided into two groups randomly and the sheep of experimental group were pen fed in greenhouse, the control group were grazing as traditional from December 30 th 2008 to May 26 th 2009. The results indicated the body weight gain of adult ewes，replacement ewes and lambs of experimental group are 5.1，9.8 kg and 6.9 kg; the body weight lose of adult ewes，replacement ewes and lambs of control group are 7.3，5.0 and 1.0 kg，the average adult ewes and replacement ewes body weight gain of experimental group were significantly higher (P0.01)than the control group at the end of experiment，lambs of experimental group was higher (P0.05) than control group. The average fleece length increase of experimental group and control group was not different (P0.05). The wool productivity of adult ewes，replacement ewes and lambs of experimental group were 5.24 kg, 4.56 kg and 3.79 kg, which were more (P＜0.01) than the control group by 60.24%、73.38% and 49.80%. The net income of adult ewes，replacement ewes and lambs of experimental group are 5.35 RMB，45.65 RMB and 59.57 RMB, and the lamb of control group was 29.3 RMB. The adult ewes and replacement ewes of control group were lost 28.32 RMB and 13.05 RMB. The net income of experimental group was more (P＜0.01) than control group.