新疆也木勒白羊羔羊生长发育规律及其与体尺的相关性研究

doi:10.16431/j.cnki.1671-7236.2019.10.014

摘要/Abstract

摘要： 试验对0~120日龄新疆也木勒白羊羔羊体尺指标、体重生长发育规律进行了分析，旨在为也木勒白羊品种选育提供理论依据。选择222只也木勒白羊初生羔羊，每30 d对其体尺、体重进行测量，直至120日龄。结果显示，也木勒白羊公、母羔早期各月龄体重、体尺累积增长差异极显著（P<0.01），公羔生长发育较母羔快，公、母羔30~60日龄生长速度最快，30~60日龄公羔平均日增重（ADG）较母羔多6.8 g/d；体尺指标分析结果显示，体长、体高、管围、脂臀宽和脂臀厚在0~30日龄增长最快，胸围和脂臀长在30~60日龄增长最快，公、母羔脂臀长指标在90~120日龄差异明显；120日龄断奶羔羊体尺与体重表型相关性分析结果显示，羔羊胸围与体重的相关系数最大，脂臀长与体重的相关系数最小。通径分析结果显示，羔羊胸围对体重的直接作用较大，体高、体长、脂臀长和脂臀宽主要通过间接作用影响体重。公羔管围对体重的直接作用大于间接作用，母羔管围对体重的间接作用大于直接作用。

关键词: 也木勒白羊; 体重; 体尺; 生长发育

Abstract: In this study,the growth and development of body size and body weight of Xinjiang Yemule white sheep lambs from 0 to 120 days old were analyzed in order to provide a theoretical basis for the breeding of the Muller Aries variety.222 Yemule White newborn lambs were chosen and the body weight,body size indexes were measured every 30 d,until 120 days of age.The results showed that there was an extremely significant difference in the cumulative growth of body weight and body size at the early age (P<0.01),The male lamb grows faster than female lamb with a fastest grow at 30 to 60 days of age.The ADG of male lamb at 30 to 60 das old was 6.8 g/d more than that of female lambs.The results of the body size indexes analysis showed that,body length,body height,tube circumference,fat hip width and fat hip thickness were the fastest growing at 0 to 30 days of age;The chest circumference and fat hip length grow fastest at 30 to 60 days of age;The fat hip length indicator of male and female lambs were significantly different at 90 to 120 days old.The correlation analysis between body size indexes and body weight phenotype of 120-day-old weaned lambs showed that,the correlation coefficient between body weight and chest circumference was the largest of male and female lambs,while that between fat hip length and body weight was the smallest.Path analysis results showed that the direct effect of chest circumference on body weight of male and female lambs was largest,while body height,body length,fat hip length and fat hip width mainly affect body weight through indirect effects.The direct effect of tube circumference on body weight of male lamb was greater than that of indirect effect,while that of female lambs showed the opposite tendency.

Key words: Yemulle White sheep; body weight; body size indexes; growth and development

中图分类号:

S827

梁小鹏, 张振良, 阿曼开迪·莫哈麦提汗, 姚力丹, 包敖敦格日乐, 决肯·阿尼瓦什. 新疆也木勒白羊羔羊生长发育规律及其与体尺的相关性研究[J]. 中国畜牧兽医, 2019, 46(10): 2937-2945.

LIANG Xiaopeng, ZHANG Zhenliang, AMANKAIDI·Mohamedikhan, YAO Lidan, BAOAODUNGERILE,JUEKEN·Aniwashi. Study on Growth and Development Regularity and Its Correlation with Body Size of Xinjiang Ymule White Lamb[J]. China Animal Husbandry and Veterinary Medicine, 2019, 46(10): 2937-2945.

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