| 添加烟酸条件下绵羊瘤胃发酵底物降解动力学变化特征 |
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| 引用本文： | 王菊花,卢德勋,冯宗慈,凌书礼.添加烟酸条件下绵羊瘤胃发酵底物降解动力学变化特征[J].中国草食动物,2008,28(6). |
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| 作者姓名： | 王菊花 卢德勋 冯宗慈 凌书礼 |
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| 作者单位： | 1. 安徽农业大学畜牧水产学院,合肥,230036
2. 内蒙古畜牧科学院动物营养研究所 |
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| 摘 要： | 试验用瘤胃液来自3只安装永久性瘤胃瘘管的绵羊,饲喂玉米-豆粕型基础日粮.通过体外试验,添加450 mg/kg烟酸,测定在不同培养时间内培养液中NH3-N浓度、瘤胃细菌N产量、原虫数量、总VFA量及乙酸、丙酸、丁酸产量和乙酸/丙酸值的降解动力学特征.结果表明:添加烟酸可提高培养液NH3-N利用率;培养液中细菌N、原虫数、总VFA量及乙酸、丙酸、丁酸产量随采样时间变化而呈不同的动力学变化趋势;但乙酸/丙酸值则不受采样时间变化的影响,与对照组相比差异不显著(P>0.05).
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| 关 键 词： | 动力学变化 绵羊 烟酸 瘤胃 发酵底物 |
Dynamic Change of Ruminal Fermentation under Niacin Supplement in Sheep |
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| Wang Ju-hua,Lu De-xun,Feng Zong-ci,et al.Dynamic Change of Ruminal Fermentation under Niacin Supplement in Sheep[J].China Herbivores,2008,28(6). |
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| Authors: | Wang Ju-hua Lu De-xun Feng Zong-ci |
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| Institution: | 1.The College of Animal Production and Aquatic Industry;Anhui Agricultural University;Hefei 230036;2.The Institute of Animal Nutrition;Inner Mongolian Academy of Animal Sciences |
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| Abstract: | In this experiment,three sheep fitted with permanent cannule in the rumen and fed a corn-soybean meal based diet were used to investigate the effects of a single dose niacin supplementation on rumen fermentation in vitro.The experiment was divided into two groups(0,450 mg/kg).there were 10 sampling times,each treatment was incubated 24 h.Parameters for observation included NH3-N concentration,bacterial N,protozoa number,TVFA,acetate,propionate,butyrate production and acetate to propionate ratio.The rusults ... |
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| Keywords: | Dynamic change niacin sheep rumen fermentation |
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