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

草业学报 ›› 2010, Vol. 19 ›› Issue (1): 166-172.

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

张晓庆^1,2,郝正里¹,李发弟^1,3*,郑琛¹,金艳梅⁴,吴秋珏⁵,李勇⁶

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

收稿日期:2009-02-07 出版日期:2010-01-25 发布日期:2010-02-20
作者简介:张晓庆(1978-),女,甘肃永昌人,助理研究员。E-mail:zhangxq137@sina.com
基金资助:
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)和现代农业产业技术体系建设专项资金资助。

Effects of condensed tannin of Onobrychis viciaefolia hay on the rumen metabolismand in situ degradation of diets by sheep

ZHANG Xiao-qing^1,2, HAO Zheng-li¹, LI Fa-di^1,3, ZHENG Chen¹,
JIN Yan-mei⁴, WU Qiu-jue⁵, LI Yong⁶

1.Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;

2.Grassland Research Institute, CAAS, Hohhot 010010, China;
3.Gansu Feed Engineering Technology
Research Center, Lanzhou 730000, China;
4.Faculty of Marine Studies, Shandong University at
Weihai, Weihai 264209, China;
5.Faculty of Animal Science and Technology, Henan
University of Science and Technology, Luoyang 471003, China;
6.Department
of Science and Technology, Zhoukou Vocational Technology
College, Zhoukou 466001, China

Received:2009-02-07 Online:2010-01-25 Published:2010-02-20

摘要/Abstract

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。

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, NH₃-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.

中图分类号:

S826.5

张晓庆,郝正里,李发弟,郑琛,金艳梅⁴,吴秋珏⁵,李勇⁶. 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.

ZHANG Xiao-qing, HAO Zheng-li, LI Fa-di, ZHENG Chen, JIN Yan-mei, WU Qiu-jue, LI Yong. Effects of condensed tannin of Onobrychis viciaefolia hay on the rumen metabolismand in situ degradation of diets by sheep[J]. Acta Prataculturae Sinica, 2010, 19(1): 166-172.

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