饲喂代乳料对早期断奶羔羊生长发育的影响

选择36只25日龄的欧拉藏羊与小尾寒羊杂交羔羊,随机分为3组,进行早期断奶试验。2个试验组分别饲喂不同配方的代乳料,对照组自然哺乳。结果表明,(1)30～45日龄,试验组羔羊生长速度低于对照组;45～60日龄,试验组羔羊的日增质量显著高于对照组;60～90日龄,试验组羔羊的日增质量极显著高于对照组(P<0.01)。在整个试验阶段,试验1组和试验2组的日增质量分别比对照组提高了52.82%和59.52%,差异显著(P<0.05)。(2)试验期内,试验组羔羊主要体尺略高于对照组,差异不显著。(3)试验组羔羊成活率达到95%以上,断奶母羊提前发情10 d左右。(4)试验1,2组羔羊断奶时每只均利润比对照组分别提高41.15%,45.31%,差异显著(P<0.05)。

Effect of Milk Replacer Feed to Growth of Early Weaning Lamb

36 25-day old Euler Tibetan lambs crossed with and Small Tail Han Sheep were Chozen,and divided into 3 groups randomly to carry out the 30 days' weaning early test.2 groups were fed with different milk replacers and the CK group suckled naturally.The result showed:(1)The growth rate in experimental groups was slower than that in CK group for 30～45 days' lambs;the daily gain in experimental groups was higher than that in CK group for 45～60 days' lambs;the daily gain in experimental groups was significantly higher than that in CK group for 60～90 days' lambs(P<0.01).In the whole test,the daily gain in group 1 and group 2 improved by 52.82% and 59.52% than the CK group,and the differences were significant(P<0.05).(2)During the test,the main body size in experimental groups was slightly higher than that in CK group,and the differences were not so significant.(3)The survival rate in experimental groups achieved over 95%,the weaned ewe ruted about 10 days earlier.(4)The average profits of weaned lambs in experimental groups improved by 41.15% and 45.31% than that in CK group,and the differences were significant(P<0.05).