补饲燕麦青干草对牦牛和藏系绵羊冷季生长性能的影响

发布时间：2018-04-18 11:02

本文选题：补饲 + 牦牛　；参考：《西南农业学报》2017年01期

【摘要】：为了揭示在青藏高原高寒牧区,补饲燕麦青干草对牦牛和藏系绵羊冷季生长性能的影响。试验选取10头3岁牦牛[BW=(98.2±4.35)kg]和12只1岁藏系绵羊[BW=(27.2±1.44)kg],编号后随机分为冷季放牧组和燕麦补饲组;放牧组家畜冷季自由放牧,补饲组家畜饲喂燕麦青干草,试验为期135 d。结果表明:1试验期间,放牧牦牛减重(-12.4±1.13)kg/头,减重比例为12.5%;补饲牦牛增重(8.4±0.76)kg/头,增重比例为8.92%;对应指标间差异极显著(P0.01)。2放牧藏系绵羊减重(-5.7±0.51)kg/头,减重比例为20.5%;补饲绵羊增重(7.9±0.73)kg/头,增重比例为31.3%;对应指标间差异极显著(P0.01)。3随冷季延长,放牧组家畜的阶段日均减重呈增大趋势,补饲组家畜的阶段日均增重逐渐增大并趋于平稳。4收益核算显示,放牧牦牛的冷季养殖净收益为(-347.2±31.7)元/头,补饲牦牛的净收益为(103.5±29.56)元/头(P0.01);放牧藏系绵羊的冷季养殖净收益为(-125±13.3)元/头,补饲藏系绵羊的冷季养殖净收益为(154.7±10.2)元/头(P0.01)。研究结果显示粗放补饲燕麦青干草的收益相对较低,应进一步优化冷季饲养环节。
[Abstract]:In order to reveal the effect of supplementary feeding of oat green hay on the growth performance of yak and Tibetan sheep in cold season in alpine pastoral area of Qinghai-Tibet Plateau.Ten 3-year-old yaks [BW=(98.2 卤4.35)kg] and 12 1-year-old Tibetan sheep [BW=(27.2 卤1.44)kg] were randomly divided into cold season grazing group and oat supplementary feeding group, and grazing group was fed with oat green hay for 135 days.The results showed that the weight loss of grazing yak was 12.4 卤1.13)kg/ head, the weight loss ratio was 12.5, the weight gain rate was 8.92% and the weight gain ratio was 8.92.The difference of corresponding indexes was extremely significant (P 0.01.2). The weight loss ratio of grazing Tibetan sheep was 20.50.The weight loss ratio of sheep fed with supplemental feeding was 7.9 卤0.73)kg/ head.The proportion of weight gain was 31.30.The difference between the corresponding indexes was very significant P0.01n.3 with the prolongation of cold season, the average daily weight loss of the grazing group showed an increasing trend, and the daily average weight gain of the supplementary feeding group gradually increased and tended to steady income accounting.The net income of cold season cultivation of grazing yak was -347.2 卤31.7 yuan / head, the net income of supplementary feeding yak was 103.5 卤29.56 yuan / head P0.01m, the net income of grazing Tibetan sheep was -125 卤13.3 yuan / head, the net income of refeeding sheep was 154.7 卤10.2 yuan / head P0.01a.The results showed that the income of extensive supplementary feeding of oat green hay was relatively low, and the feeding process of cold season should be further optimized.
【作者单位】：中国科学院西北高原生物研究所;中国科学院大学;
【基金】：中国科学院战略性先导科技专项(XDA05070200) 国家科技支撑项目(2012BAD13B01,2014BAC05B00) 中国科学院STS计划(KFJ-SW-STS-177) 青海省科技支撑计划(2014-NS-118,2014-NS-112,2015-SF-A4-2)
【分类号】：S823.5;S826.5

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