First,Ujimqin adult sheep and pregnant ewe were used to study the effects of composite feed for resisting cold stress on the body weight changes of adult sheep and pregnant ewe and the baby weight.

• 首先以乌珠穆沁育成羊和妊娠母羊为试验对象，进行了舍饲和放牧+补饲两种不同饲养方式下，抗冷应激饲草料对育成羊和妊娠母羊体重变化及羔羊出生重生产性能影响的试验。