冷季补饲对阿勒泰妊娠母羊及羔羊生长性能的影响

Effect of supplementary feeding in the cold season on growth performance of Altay pregnant ewes and lambs

为了研究冷季补饲对阿勒泰妊娠母羊和羔羊生产性能的影响,2012年10月份—2013年8月份在阿勒泰市散德克库木种畜场选择年龄和胎次相同、体重接近的阿拉泰大尾母羊220只,随机分为对照组和试验组,试验组每只母羊每天补饲颗粒料600 g,对照组不补饲。试验羊分娩后测定母羊体重、羔羊初生重、初生体尺及每月体重、体尺指标。试验组母羊分娩的羔羊为试验组,断奶后补饲颗粒料;对照组母羊分娩的羔羊为对照组,不补饲颗粒饲料。结果表明:补饲颗粒料能显著增加母羊分娩体重,显著增加羔羊初生体高、体长和胸围(P<0.05);羔羊断奶后补饲颗粒料可显著提高生产性能,120日龄时试验组羔羊体重极显著高于对照组羔羊(P<0.01)。说明母羊和断奶羔羊补饲颗粒料可以提高羔羊体尺指标,促进前躯发育水平。

To study the effect of supplementary feeding in the cold season on growth performance of Altay pregnancy ewes and lambs, in Aletai City, Sandirk at stud farm selection age, same parity, weight close to Allah Tai Fat tailed 220 fat - tailed Ahay ewes with the same age and par- ity and similar body weight were selected from Sandirkum livestock breeding farm in Altay city from October 2012 to August 2013. The ewes were randomly divided into a control group and experimental group, and each ewe from the experimental group and control group was fed with or without supplementary pellet feed of 600 g every day, respectively. The ewe body weight, lamb birth weight and body size as well as monthly body weight and body size indexes were determined after delivery. The lambs delivered by the ewes from the experimetal group were selected as a new experimental group, and fed with supplementary pellet feed after weaning. The Iambs delivered by the ewes from the control group were selected as a new control group. The results showed that： the feeding supplementary pellet feed couid significantly increase the delivery body weight of ewes, and also significantly increase （ P 〈 O. 05 ） the birth body height, body length and heart girth of lambs. Feeding supplementary pellet feed could significantly improve the productive performance of lambs after weaning, and the body weight of lambs in the experimental group was highly significantly higher than that in the control group at 120 days of age（ P 〈0.01 ）. The results indicate that feeding supplementa- ry pellet feed to ewes and weaned lambs can improve the body size indexes, and promote the development levels of forequarters in lambs.