草业科学2017，Vol.34Issue(2)：396-406,11.DOI:10.11829/j.issn.1001-0629.2016-0383
青藏高原东缘高寒草甸区欧拉型藏羊生长发育规律
The growth and development of Oula-type Tibetan sheep in an alpine meadow area at the eastern margin of the Qinghai-Tibet Plateau
摘要
Abstract
This study shows measurements from 30 ewes and 30 rams of Oula-type Tibetan sheep that were born within 72 hours of each other at two representative grasslands in Maqu County, Tibetan Autonomous Prefecture of Gannan, Gansu.We measured their weight, height at withers, body length, chest girth, chest width, chest depth, and hip width, and analysed their growth and development from birth to 18 months old (March 2013 to September 2014).The stage from birth to 6 months old is the most important time for significant weight increase (P<0.05).Weight gain increase is fastest when sheep are 2 months to 4 months old, while weight gain from 8 months to 12 months old significantly slower (P<0.05).The stage from birth to 6 months old is the main growing time, so it appropriate to slaughter lambs at this time.The body indices of this type of sheep increase mainly from birth to 6 months old, then increase more slowly from 6 months to 14 months old.Although there is a continuing growing trend from 14 months to 18 months old, it is smaller than that from birth to 6 months old.This type of sheep basically completes its development by 6 months old.Therefore, the lambs can be slaughtered when they are 6 months old.There are no significant differences in early growth and development between the ewes and rams, but differences appear with continued growth.关键词
欧拉型藏羊/体重/日增重/体尺/生长发育规律Key words
Oula-type of Tibetan sheep/body weight/ADG (average daily gain)/body size index/growth and development law分类
农业科技引用本文复制引用
蒲小剑,杜文华,吴建平,毛红霞..青藏高原东缘高寒草甸区欧拉型藏羊生长发育规律[J].草业科学,2017,34(2):396-406,11.基金项目
公益性行业(农业)科研专项(201003019) （农业）
绒毛用羊产业技术体系放牧生态岗位科学家(CARS-40-09B) （CARS-40-09B）
