| 红豆草缩合单宁对绵羊瘤胃代谢及饲粮尼龙袋降解率的影响 |
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| 引用本文： | 张晓庆,郝正里,李发弟,郑琛,金艳梅,吴秋珏,李勇.红豆草缩合单宁对绵羊瘤胃代谢及饲粮尼龙袋降解率的影响[J].草业学报,2010,19(1):166-172. |
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| 作者姓名： | 张晓庆 郝正里 李发弟 郑琛 金艳梅 吴秋珏 李勇 |
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| 作者单位： | 1.甘肃农业大学动物科学技术学院,甘肃 兰州 730070;2.中国农业科学院草原研究所,内蒙古 呼和浩特 010010;3.甘肃省饲料工程技术研究中心,甘肃 兰州 730000;4.山东大学威海分校海洋学院,山东 威海 264209;5.河南科技大学动物科技学院,河南 洛阳 471003;6.周口职业技术学院动物科学系,河南 周口 466001 |
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| 基金项目： | 国家农业科技成果转化资金项目(2008GB2G100324);;甘肃省农业科技成果转化基金项目(0704XCNA008);;中央级公益性科研院所基本科研业务费专项资金(中国农业科学院草原研究所);;现代农业产业技术体系建设专项资金资助 |
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| 摘 要： | 选用3只1岁半、平均体重24 kg,安装永久瘤胃瘘管的甘肃高山细毛羊羯羊,按3×3拉丁方试验设计,每个循环19 d(预试期10 d,正试期9 d),研究饲粮中红豆草缩合单宁水平对绵羊瘤胃代谢的影响。试验共设3个处理饲粮,其中红豆草缩合单宁水平依次是Ⅰ为0.00 g/kg DM、Ⅱ为1.52 g/kg DM、Ⅲ为3.03 g/kg DM。试验结果表明,3个处理的瘤胃液pH均值(依组次为6.24±0.32,6.13±0.28和6.13±0.37)无显著差异(P＞0.05);处理Ⅱ、Ⅲ瘤胃液总挥发性脂肪酸(TVFA)呈高于Ⅰ的趋势(P=0.099);处理Ⅲ的乙酸摩尔比低于处理Ⅰ(P＜0.05)与Ⅱ(P=0.074),其丙酸摩尔比较高(P=0.088),乙酸/丙酸较低(P=0.096);各处理间瘤胃液总氮、蛋白氮、细菌氮、氨态氮、尿素氮的平均浓度差异均不显著(P＞0.05)。因此,本试验结果表明,含红豆草缩合单宁3.03 g/kg DM的饲粮对绵羊瘤胃纤维素分解微生物的活性产生一定程度的抑制,而分解淀粉的微生物活性被增强。
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| 关 键 词： | 红豆草 缩合单宁 瘤胃代谢 尼龙袋降解率 挥发性脂肪酸 绵羊 纤维素分解微生物 |
| 收稿时间： | 1900-01-01; |
Effects of condensed tannin of Onobrychis viciaefolia hay on the rumen metabolism and in situ degradation of diets by sheep |
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| ZHANG Xiao-qing,HAO Zheng-li,LI Fadi,ZHENG Chen,JIN Yan-mei,WU Qiu-jue,LI Yong.Effects of condensed tannin of Onobrychis viciaefolia hay on the rumen metabolism and in situ degradation of diets by sheep[J].Acta Prataculturae Sinica,2010,19(1):166-172. |
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| Authors: | ZHANG Xiao-qing HAO Zheng-li LI Fadi ZHENG Chen JIN Yan-mei WU Qiu-jue LI Yong |
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| Institution: | ZHANG Xiao-qing1,2,HAO Zheng-li1,LI Fa-di1,3,ZHENG Chen1,JIN Yan-mei4,WU Qiu-jue5,LI Yong6(1.Faculty of Animal Science , Technology,Gansu Agricultural University,Lanzhou 730070,China,2.Grassl, Research Institute,CAAS,Hohhot 010010,3.Gansu Feed Engineering Technology Research Center,Lanzhou 730000,4.Faculty of Marine Studies,Sh,ong University at Weihai,Weihai 264209,5.Faculty of Animal Science , Technology,Henan University of Science , Technology,Luoyang 471003,6.Department ... |
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| Abstract: | Three, one and a half years old, High Mountain Fine-wool wethers with an average weight of 24 kg, were fitted with permanent rumen fistulas. They received a random sequence of three treatments in a 3×3 Latin square design with feeding cycles of 19 days (10 d preliminary period and 9 d sampling period) to study the effect of condensed tannin of Onobrychis viciaefolia hay on rumen metabolism. Condensed tannin (CT) contents in treatmentsⅠ, Ⅱ and Ⅲ were 0.00, 1.52, and 3.03 g/kg of DM, respectively. Three similar sheep were used to measure in situ degradation of DM and CP of three diets. 1) The average rumen pH values of the three treatments were 6.24±0.32, 6.13±0.28, and 6.13±0.37 respectively, and were not significantly different. 2) The ruminal concentration of total VFA tended to increase with the tannin content (P=0.099). Molar proportions of acetic acid were lower (P＜0.05, P=0.074) while those of propionic acid were higher (P=0.088) in treatment Ⅲ than treatmentsⅠandⅡ, and the A/P was lower (P=0.096). 3) The ruminal total N, protein-N, bacteria-N, NH_3-N and urea-N concentration were not significantly (P＞0.05) different. Cellulolytic microbial activity was restrained to a certain extent by 3.03 g CT /kg of DM from O. viciaefolia hay in the diet but amylolytic microbial activity in the rumen was increased. |
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| Keywords: | Onobrychis viciaefolia condensed tannin rumen metabolism in situ rumen degradation VFA sheep cellulolytic microbe |
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