Abstract: [Objective] In this paper, the growth and development of 0-60 days old Xinji fine wool sheep were studied.Because the growth development is faster between birth and 60-day-old lamb, the main aim of this study is to understand the variation process of growth of fine-wool sheep lamb from birth to 60 days of age, so as to provide a theoretical basis for better production in early rearing.[Method]In this study, the weights of birth, 10 days, 20 days, 30 days, 40 days, 50 days, and 60 days of age of 613 Xinji fine-wool sheep lamb at Tacheng sheep breeding farm were determined and analyzed.The growth rules of different day old lambs, and the effects of different groups on the growth of the lambs were analyzed,too.[Result]The results showed that the daily gain weight and relative growth of Xinji fine-wool sheep lamb were the fastest at 0-10 days of age, decreased at 20-50 days of age, and even decreased greatly at 50-60 days of age;the growth process of them could be divided into 3 stages, which were named 0-10 days, 20-50 days, and 50-60 days, respectively.[Conclusion]At 0-10 days of age, lambs grow very fast, so they must be allowed to eat colostrum and the ewes' lactation should strengthened.20-50 days of age is the new gill fine lamb growth period of rapid development, therefore, the feeding and management of lambs should be strengthened too and their nutritional supply must be met.Those in good feeding and management grow fast and daily gain weight is better.

摘要： [目的]羔羊前60 d生长发育较快,研究0~60日龄新吉细毛羊生长发育规律,为生产中早期饲养提供理论依据.[方法]测定新疆塔城种羊场613只新吉细毛羊羔羊初生、10、20、30、40、50和60日龄的体重,分析不同日龄段羔羊的生长发育规律及不同群别对羔羊生长的影响.[结果]新吉细毛羔羊的日增重和相对生长速度0~10日龄最快,20~50日龄下降,50~60日龄大幅下降,可将新吉细毛羔羊的生长分为3个阶段,分别为0~10日、20~50日龄及50~60日龄.[结论]0~10日龄,羔羊生长发育很快,必须让羔羊吃上初乳以及应加强母羊的哺乳.20~50日龄是新吉细毛羔羊生长发育较快的时期,应对羔羊加强饲养管理和满足其营养供给.饲养管理较好的羊群羔羊生长快,日增重高.