| 补饲与不补饲条件下3种放牧率对高寒草地牧草与家畜生产的影响 |
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| 引用本文： | 沈景林,张光圣,周学东,王占凤,罗刚.补饲与不补饲条件下3种放牧率对高寒草地牧草与家畜生产的影响[J].草业学报,1996(4). |
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| 作者姓名： | 沈景林 张光圣 周学东 王占凤 罗刚 |
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| 作者单位： | 中国人民解放军农牧大学畜牧水产系!长春市130062 |
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| 摘 要： | 通过补饲和不补饲条件下放牧率对高寒草地牧草和家畜生产影响的研究,结果表明,3种放牧率对草地牧草产量影响不大,组间差异不显著(P>0.05)。放牧率影响羯羊体重。在补饲条件下,羯羊日增长量随放牧率减小而增加,组间差异显著(P<0.05);不补饲使羯羊减重,羯羊日减重量随放牧率减小而降低。同时,放牧率影响羯羊肉用性能和肉的品质。在补饲条件下,草地生物学效率明显高于不补饲组,且中组比低、高组高,草地生产能力最大。由此得出,高寒草地以中等放牧率为最佳,即1.8只/hm~2,且补饲效果最明显。
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| 关 键 词： | 放牧率 羯羊 补饲 转化效率 高寒草地 |
Effects of Stocking Rates on Alpine Grassland Forage and Livestock Production under Different Grazing Schemes |
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| Shen Jinglin,Zhang Guangsheng,Zhou Xuedong,Wang Zhanfeng,Luo Gang.Effects of Stocking Rates on Alpine Grassland Forage and Livestock Production under Different Grazing Schemes[J].Acta Prataculturae Sinica,1996(4). |
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| Authors: | Shen Jinglin Zhang Guangsheng Zhou Xuedong Wang Zhanfeng Luo Gang |
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| Abstract: | The effects of three different stocking rates of 1. 2, 1. 8 and 2. 4 wethers per hectare on alpine grassland forage and livestock production under the conditions of grazing with and without supplementary feeding were examined in this study. It was shown that the variation in forage yield was not significant between the three grazing schemes (P>0. 05), while the liveweight of wethers was affected by different stocking rates. With supplementary feeding, the daily body gain of wethers increased significantly with a decrease in stocking rate (P<0. 05). Without supplementary feeding, the daily body gain was negative and its absolute value increased with an increase in stocking rate. The meat-producing performance of wethers was also affected by*stocking rates. With supplementary feeding, the efficiency of grassland forage utilisation was obviously higher than in the case without supplementary feeding, and both the highest grassland productivity and the best result of supplementary feeding were observed in the case of medium stocking rae, that is,l. 8 wethers per hectare. |
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| Keywords: | Stocking rate wether supplementary feeding efficiency of utilisation alpine grassland |
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