家畜生态学报2011，Vol.32Issue(6)：51-56,6.
云南半细毛羊生产性能测定
Study on Yunnan Semi-wool Sheep Production Performance
摘要
Abstract
In order to explore whether Yunnan semi-wool sheep have germplasm degeneration phenomenon in the long-term reproduction, 22 Yunnan semi-fine wool sheep spring lamb (weighing 14 kg), were chosen to conduct grazing trials to determine its production performance and forage nutrient use efficiency. The results showed that weight gain of Yunnan semi-wool sheep was higher in earlier stage than in the later growth stage, daily feed intake was slightly higher than the late growth stage, the amount of forage needed to feed of each 1g weight gain is the growth of late than early growth. Yunnan semi-wool sheep digestibility of feed is less than that in the early growth; the biochemical parameters of serum is higher than that in the earlier stage;the growth hormone (GH)and insulin(Ins) levels of serum were higher than that in the later stage, but thyroid hormone (T3, T4) were all lower than that in the later stage. From sexual distinction , weight gain and feed intake of female sheep is less than the male's, but the amount of forage needed for a sheep gaining 1 g body weight in earlier stage was higher for female,but lower in later stage; the biochemical indicators of male are higher than the female, the growth hormone and thyroid hormone levels of male sheep were higher than that of the female, but the Insulin content of male is lower than female in the earlier growth stage, and higher than female in the late growth stage. This shows that, although the ewes synthesize nutrients rapidly, most of its nutrients are used in the oxidation for energy, and that the basal metabolism is more vigorous, while the synthesis of nutrients for ram is slower, but because of the slower basal metabolism, the performance of their body weight increased faster than the ewes.关键词
云南半细毛羊/生产性能Key words
Yunnan semi-wool sheep/ production performance分类
农业科技引用本文复制引用
赵彦光,洪琼花,谢萍,陈官平,王文华..云南半细毛羊生产性能测定[J].家畜生态学报,2011,32(6):51-56,6.基金项目
国家绒毛用羊产业技术体系资助(nycytx-40) （nycytx-40）
