早期强制补饲对甘肃省兰州地区不同品种肉羊羔羊生产性能的影响

Effect of Early Forced Supplementary Feeding on Production Performance of Different Breeds of Lamb in Lanzhou of Gansu Province

旨在探讨早期强制补饲对甘肃省兰州地区不同品种肉羊羔羊增重效果及养殖效益的影响。选取健康湖羊、小尾寒羊、杜湖F_1及杜寒F_1羔羊各10只,将同一品种的羔羊设为1个试验组,7日龄时采用早期强制补饲方式饲喂开食料;于出生日及断奶日(60日龄)进行称重,计算并比较各组羔羊在试验期间的平均日增重;记录试验期间各组羔羊的发病情况,计算各组羔羊的发病率;测定并比较各品种羔羊断奶日龄的体尺指标;计算并比较各组羔羊在试验期间的养殖效益。结果表明,杜寒F_1羔羊、杜湖F_1羔羊在试验期间的平均日增重显著高于湖羊以及小尾寒羊羔羊(P<0.05);湖羊和杜寒F_1羔羊的发病率高于小尾寒羊和杜湖F_1羔羊;60日龄断奶杜寒F_1羔羊的胸宽显著大于湖羊和小尾寒羊羔羊(P<0.05),且大于杜湖F_1羔羊(P>0.05),其余体尺指标在4个品种肉羊羔羊之间差异均不显著(P>0.05);杜寒F_1、杜湖F_1、湖羊羔羊较小尾寒羊羔羊每只分别多增收90.92元、67.18元、3.31元。综上提示,早期强制补饲开食料能够有效提高肉羊羔羊生产性能及养殖效益,该项补饲技术在兰州地区具有一定的推广应用价值。

This study aimed to evaluate the effect of early forced supplementary feeding on weight gain and rearing benefit of different breeds of lamb in Lanzhou of Gansu Province. Ten healthy lambs for each breeds of Hu Sheep, small-tail Han Sheep, F1 hybrids of Dorper Sheep and Hu Sheep, and F1 hybrids of Dorper Sheep and small-tail Han Sheep were selected in this study, and the lambs in the same breed were included in the same group. From 7-day-old to weaning （60-day-old）, the lambs were subjected to early forced supplementary feeding by feeding with starter. The lambs were weighed at the date of birth and weaning, and the average daily gain of different groups were calculated and statistically compared; the diseases incidence was recorded and compared; the body measurement indicators were determined at the weaning day and were statistically compared; the rearing benefit of different groups were calculated and compared. The results showed compared to Hu Sheep and small-tail Han Sheep lambs, the Fl hybrids of Dower Sheep and small-tail Han Sheep as well as Fl hybrids of Dorper Sheep and Hu Sheep lambs had significantly higher average daily gain （P〈0.05）; the Hu Sheep and Fj hybrids of Dorper Sheep and small-tail Han Sheep lambs had higher diseases incidence than small-tail Han Sheep and F1 hybrids of Dorper Sheep and Hu Sheep lambs; the chest width of the 60-day-weaned F1 hybrids of Dorper Sheep and small-tail Han Sheep lambs was significantly higher than that of Hu Sheep and small-tail Han Sheep lambs （P〈0,05）, and was higher than that of F1 hybrids of Dorper Sheep and Hu Sheep lambs （P〉 0.05 ）; no significant differences in the other body measurement indicators were found （P〉0.05） between the four breeds of lambs; the rearing benefit of F1 hybrids of Dorper Sheep and small-tail Han Sheep, Fi hybrids of Dower Sheep and Hu Sheep and Hu Sheep lambs was 90.92 Yuan, 67.18 Yuan and 3.31 Yuan higher than that of small-tail Han Sheep lambs, respectively. The results obtained in this study suggest that early forced supplementary feeding by feeding starter effectively improves the production performance and rearing benefit, and this supplementary feeding technique is worthy to be promoted and applied in Lanzhou area.