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当前位置: 首页 > 文章 > 异丁酸对西门塔尔牛瘤胃发酵及尿嘌呤衍生物的影响 动物营养学报 2006 (3) 160-165
Position: Home > Articles > Effects of Isobutyrate on Rumen Fermentation and Purine Derivatives of Urine in Simmental Steer Chinese Journal of Animal Nutrition 2006 (3) 160-165

异丁酸对西门塔尔牛瘤胃发酵及尿嘌呤衍生物的影响

作  者：
刘强;黄应祥;王聪;王浩;董群
单  位：
山西农业大学动物科技学院
关键词：
西门塔尔牛;异丁酸;降解率;尿嘌呤衍生物
摘  要：
本文旨在研究异丁酸对西门塔尔牛瘤胃pH、NH3-N、VFA和营养物质降解率及尿嘌呤衍生物浓度的影响。选用4头平均体重420 kg,年龄2.5岁装有永久性瘤胃瘘管的中国西门塔尔牛阉牛,采用4×4拉丁方设计,以混合精料和风干玉米秸秆为基础日粮,在基础日粮中分别添加异丁酸0、0.02、0.04和0.06 g/(kgW.d)。结果表明:各组瘤胃pH差异不显著(P>0.05),0.04 g/(kgW.d)组和0.06 g/(kgW.d)组NH3-N浓度极显著低于对照和0.02 g/(kgW.d)组(P<0.01);0.02 g/(kgW.d)组豆粕干物质、有机物和粗蛋白质动态降解率显著高于对照组(P<0.05);0.04 g/(kgW.d)组玉米秸干物质、有机物、中性洗涤纤维和酸性洗涤纤维的降解率显著提高(P<0.05),0.04 g/(kgW.d)组瘤胃乙酸、乙酸/丙酸、总挥发性脂肪酸和尿嘌呤衍生物显著增加(P<0.05)。根据试验结果推断日粮中异丁酸的适宜添加水平为0.04 g/(kgW.d)。
译  名：
Effects of Isobutyrate on Rumen Fermentation and Purine Derivatives of Urine in Simmental Steer
作  者：
LIU Qiang HUANG Ying-xiang WANG Cong~* WANG Hao DONG Qun (College of Animal Science and Veterinary Medicine, Shanxi Agricultural University,Taigu 030801,China)
关键词：
Simmental steer;Isobutyrate;Degradability;Purine derivatives
摘  要：
To evaluate the effects of different isobutyrate concentrations on ruminal pH,NH_3-N,VFA,nutrients degradability and purine derivatives of urine,four Simmental steers(average BW 420 kg,aged 2.5 years) cannulated in the rumen consuming a corn straw diet were used in a 4×4 Latin square design and supplemented with four concentrations(0,0.02,0.04 and 0.06 g/(kgW·d)) of supplemental isobutyrate.The results showed that ruminal pH was not affected(P>0.05).The NH_3-N concentrations of 0.04 g/(kgW·d) and 0.06 g/(kgW·d) groups were lower than those of control and 0.02 g/(kgW·d) groups significantly(P<0.05).Soybean DM,OM and CP degradability were affected by isobutyrate supplementation with 0.02 g/(kgW·d)(P<0.05).The degradability of DM,OM, NDF and ADF of corn straw supplemented with 0.02 g/(kgW·d) were increased significantly(P<0.05).Ruminal actate,acetate/propionate,TVFA and purine derivatives of urine concentrations were increased significantly(P<0.05) by isobutyrate supplementation with 0.04 g/(kgW·d).The supplementation of isobutyrate had passive effect on rumen fermentation.The optimum isobutyrate supplemented dose was 0.04 g/(kgW·d).

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