安徽农业科学2017，Vol.45Issue(35)：85-87,3.
放牧藏系绵羊生长发育及体重变化规律研究
Study on Growth Performance and Bodyweight Variation of Grazing Tibetan Sheep
摘要
Abstract
[Objective] In order to elaborate the grazing growth and bodyweight variation of Tibetan sheep . [Method] We carried out the experi-ment in Lintan County of Gansu Province,weight was determined,and forage of pasture was observed. [Result] The growth and nutrition status of 1 year old Tibetan sheep reserve ewes was obviously effected by seasonal variation. In late winter and early spring grass lack period,the growth and development of reserve ewes were stagnant,the nutritional status was the worst,and the bodyweight loss was about 10. 14%,compared to other seasons,the daily weight gain was extremely significant (P<0. 01),and the weight was the least. In the grass germination period,the nutrition of sheep recovered,bodyweight increased about 9. 98%. In the grass vigorously grow period,the growth and development of sheep were the fastest, and the weight increased about 49. 38%,almost increased 50% of the initial weight,the daily weight gain was extremely significant (P<0. 01). In the autumn,the bodyweight reached the biggest of the year. When winter comes,the nutrition status go from bad to worse. [ Conclusion] Ac-cording to the growth law of grazing sheep,timely feeding and slaughter should carry out throughout the year,it is beneficial to reduce the grass-land carrying capacity,alleviate the contradiction between the grass and livestock,increase herders' income and enhance the animal husbandry benefit.关键词
放牧/藏系绵羊/后备母羊/生长发育/载畜量Key words
Grazing/Tibetan sheep/Reserve ewe/Growth and development/Grazing capacity分类
农业科技引用本文复制引用
包鹏甲,王宏博,夏永祺,汪海成,张功,朱新书..放牧藏系绵羊生长发育及体重变化规律研究[J].安徽农业科学,2017,45(35):85-87,3.基金项目
公益性行业(农业)科研专项(201303062) （农业）
中国农业科学院科技创新工程(CAAS-ASTIP-2014-LIHPS-01). （CAAS-ASTIP-2014-LIHPS-01）
