| 绵羊对高山草原混合牧草的能量消化率 |
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| 引用本文： | 牛菊兰.绵羊对高山草原混合牧草的能量消化率[J].草业学报,1994,3(4):46-49. |
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| 作者姓名： | 牛菊兰 |
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| 作者单位： | 甘肃农业大学草业学院 |
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| 摘 要： | 采用舍饲全收粪法收集分析样品，自动绝热测热仪测定热能，研究了绵羊对高山草原生态系统禾本科一莎草科型草地混合牧草的能量消化率和可消化能。结果表明，随牧草生育期的变化，混合牧草的能量消化率降低，其能量消化率依次为６３．３７％、５５．９２％、５３．６２％和５０．７６％，可消化能减少，依次为１１．７５、１０．０７、９．６７５和９．０８０ＭＪ／ｋｇ。
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| 关 键 词： | 绵羊 混合牧草 能量消化率 高山草原 |
The Effect of Sheep Grazing on Energy Digestlbility of Ab origin al Forage Plants Mixtures
Grown on Alpine Rangelands |
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| Niu Julan.The Effect of Sheep Grazing on Energy Digestlbility of Ab origin al Forage Plants Mixtures
Grown on Alpine Rangelands[J].Acta Prataculturae Sinica,1994,3(4):46-49. |
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| Authors: | Niu Julan |
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| Abstract: | The effect of sheep grazing on the energy
digestibility and digestible energy of aborigu1al forage plants grown in the mixture community
of grass-sedge in alpine rangeland ecosystem was studied by using the all-feces collecting
method under the shed feeding condition,The trial was conducted from July 1 to
October15,1990.Samples were taken at random once a month.The energy digestibilities of the
fOur respective sam-ples were estimated at 63. 37%,55.92%,53.62%and 50.76%,and the
digestible energy records of thefour samples forementioned were collectecd respectively as
follows:ll.75,10.07,9.68 and 9.08 MJ/kg.The experimental results showed that the energy
digesti bility a nd digestible ene rgy were decreasing with thechanging situation at growth a nd
development stages in the alpine rangeland ecosystem. |
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| Keywords: | Sheep grazing grass-sedge mixture community energy digestibility digestible energy |
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