| 利用饱和烷烃技术对短花针茅荒漠草原放牧绵羊食性的测定 |
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| 引用本文： | 李亚奎,胡红莲,卢德勋.利用饱和烷烃技术对短花针茅荒漠草原放牧绵羊食性的测定[J].畜牧兽医学报,2011,42(5). |
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| 作者姓名： | 李亚奎 胡红莲 卢德勋 |
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| 作者单位： | 1. 河北北方学院动物科技学院,张家口,075000
2. 内蒙古农牧业科学院动物营养研究所,呼和浩特,010030 |
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| 摘 要： | 为进一步研究饱和烷烃技术在放牧绵羊食性测定中的应用,本研究在4.4 hm2放牧试验区内,放牧8只蒙古羊,分别于6、9和11月利用饱和烷烃技术对放牧绵羊的食性进行测定.结果表明,同一季节,不同牧草的烷烃模式存在差异,其中以C27和C31差异最为显著,C33次之,C29最差.绵羊的食性表现出明显的季节性变化,夏季羊只所食的牧草主要以冷蒿、无芒隐子草和银灰旋花为主,分别占79.68%、12.12%和7.30%,而短花针茅只占0.90%;而进入秋季后,随着适口性好植物密度的降低,羊只开始对短花针茅进行采食,由原来占食入牧草总量的0.90%升高到3.81%,同时无芒隐子草的采食量也开始增加,由原来占食人牧草总量的12.12%提高到23.57%;冬季家畜采食牧草的种类开始减少,冷蒿占羊只采食量的86.26%,无芒隐子草和银灰旋花分别减少到8.33%和5.41%,而对短花针茅不采食.综上,饱和烷烃技术可以准确测定短花针茅荒漠草原放牧绵羊的食物组成.
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| 关 键 词： | 饱和烷烃技术 短花针茅荒漠草原 放牧绵羊 放牧季节 食性 |
Estimation of Diet Composition of Grazing Sheep by n-alkanes as Markers on Stipa breviflora Desert Steppe |
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| LI Ya-kui,HU Hong-lian,LU De-xun.Estimation of Diet Composition of Grazing Sheep by n-alkanes as Markers on Stipa breviflora Desert Steppe[J].Acta Veterinaria et Zootechnica Sinica,2011,42(5). |
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| Authors: | LI Ya-kui HU Hong-lian LU De-xun |
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| Institution: | LI Ya-kui1,HU Hong-lian2,LU De-xun2(1.College of Animal Science and Technology,Hebei North University,Zhangjiakou 075000,China,2.Animal Nutrition Institute,Inner Mongolian Academy of Agriculture and Animal Sciences,Huhhot 010030,China) |
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| Abstract: | This experiment was conducted to estimate the diet composition of grazing sheep by n-alkane technique.In 4.4 hm2 grazing plots,eight Mongolia sheep were grazing,and their diet composition was estimated by n-alkanes as markers on June,September and December,respectively.The results showed that there was a difference in concentration of n-alkanes among 4 species forages,which C27 and C31 were most significant,C33 took the second place,and C29 was the poorest.The diet composition of sheep had significant chang... |
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| Keywords: | n-alkanes technique Stipa breviflora desert steppe grazing sheep grazing seasons diet composition |
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