青海省海晏县放牧牦牛体重及血清生化指标的全年监测

发布时间：2018-03-08 02:33

本文选题：海晏县　切入点：牦牛　出处：《动物营养学报》2017年10期 　论文类型：期刊论文

【摘要】：本试验旨在探明青海省主要牦牛饲养区海晏县牦牛的营养状况,为制定添补措施提供科学依据。于2015-09—2016-08跟踪测定了青海省海晏县牧户草场天然牧草产量以及牦牛干物质采食量、体重和血清生化指标,同时分析平均日增重与血清生化指标的相关性。结果表明:天然牧草可食草产量7月份高于其他月份;春季牦牛干物质采食量显著高于秋、冬季(P0.05),秋季显著低于其他季节(P0.05);1月份、2月份、3月份、10月份、11月份、12月份牦牛平均日增重呈现负增长,4月份后逐渐上升,6月份、7月份显著高于其他月份(P0.05);血清葡萄糖(GLU)的含量7月份显著高于除6月份、10月份外的其他月份(P0.05);2月份、3月份血清尿素氮(UN)含量及碱性磷酸酶(ALP)活性低于其他月份;由相关性分析可知,平均日增重与血清UN含量呈显著的正相关(P0.05)。综合得出,青海省海晏县10月份至次年3月份为饲草供给不足,牦牛平均日增重呈现负增长,4月份后平均日增重逐渐上升,因此,建议轮牧的放牧形式下,10月份至次年3月份,采用天然草场配合补饲饲料的饲养方式。
[Abstract]:The purpose of this experiment was to find out the nutritional status of yaks in Haiyan County, Qinghai Province, and to provide scientific basis for making supplementary measures. The natural forage yield and dry matter intake of yaks in Haiyan County, Qinghai Province, were measured in 2015-09-2016-08. The results showed that the yield of natural herbage in July was higher than that in other months, and the dry matter intake of spring yak was significantly higher than that of autumn. In winter, the average daily gain of yak increased gradually from October to November to December. The average daily gain of yaks in June and July was significantly higher than that in other months (P 0.05); the serum of grape grapes was higher than that of other months (P 0.05); the average daily gain of yak in January and February was significantly lower than that in other seasons. The average daily gain of yaks in November and December increased gradually after April, and was significantly higher than that in other months. The content of GLU in July was significantly higher than that in other months except June and October. The contents of serum urea nitrogen and the activity of alkaline phosphatase (ALP) in February and March were significantly lower than those in other months. According to the correlation analysis, the average daily gain was positively correlated with the serum UN content, and it was concluded that the forage supply was insufficient from October to March in Haiyan County, Qinghai Province. The average daily gain (ADG) of yak increased gradually after April. Therefore, it was suggested that the grazing form of rotational grazing should be fed with natural pasture and supplementary feed from October to March of the following year.
【作者单位】：省部共建三江源生态与高原农牧业国家重点实验室青海省高原放牧家畜动物营养与饲料科学重点实验室;青海高原牦牛研究中心;青海大学畜牧兽医科学院;
【基金】：国家自然科学基金(31660673) 国家重点研发计划(2016YFD0500504-4) 国家国际科技合作专项项目(2015DFG31870) 国家重点基础研究发展计划(973项目)(2012CB722906) 青海省重大科技平台建设项目(2013-Z-Y03)
【分类号】：S823.85

【相似文献】