期刊文献

Effects of isobutyrate on rumen fermentation, urinary excretion of purine derivatives and digestibility in steers 收藏

异丁酸对瘤胃发酵，嘌呤衍生物尿排泄和阉牛消化率的影响

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作者

Qiang Liu [1];Cong Wang [2];YingXiang Huang [2];KuanHu Dong [2];Hao Wang [2];WenZhu Yang [3]

作者单位

[1]College of Animal Sciences and Veterinary Medicines, Shanxi Agricultural University , Taigu , Shanxi , P. R. China ;[2]College of Animal Sciences and Veterinary Medicines, Shanxi Agricultural University , Taigu , Shanxi , P. R. China;[3]College of Animal Sciences and Veterinary Medicines, Shanxi Agricultural University , Taigu , Shanxi , P. R. China ; Agriculture and Agri-Food Canada, Research Centre , Lethbridge , Alberta , Canada

关键词

isobutyric acid; rumen fermentation; purines; derivatives; digestibility; beef cattle

关键词译文

异丁酸;瘤胃发酵;嘌呤;衍生物;消化率;肉用牛

发布日期

01 Sep 2008

页码

377-388

DOI

10.1080/17450390802327761

来源信息

Archiv für Tierernaehrung ISSN：0003-942X, 2008年, 62卷, 5期, 377-388页

摘要

The objective of this study was to evaluate the effects of isobutyrate supplementations on rumen fermentation, urinary excretion of purine derivatives and feed digestibility in steers. Eight ruminally cannulated Simmental steers were used in a replicated 4 × 4 Latin square experiment. On DM basis, diet consisted of 60% corn stover and 40% concentrate. Dry matter intake (averaged 9 kg/d) was restricted to 90% of ad libitum intake. The four treatment groups received a daily dose of 0 (control), 8.4, 16.8 or 25.2 g isobutyrate per steer. With increasing isobutyrate supplementation total VFA concentration (range 64.2–74.0 mM) was significantly enhanced. The ratio of acetate to propionate (range 2.72–4.25) was also significantly increased due to the increase in actate production and decrease in propionate production. With increasing isobutyrate supplementation the ruminal degradation of NDF from corn stover was improved but the CP degradability of soybean meal was decreased. Furthermore, the isobutyrate supplementation caused a significantly increased urinary excretion of purine derivatives. Similarly, digestibilities of OM, NDF and CP in the total tract were significantly increased. The present results indicate that dietary supplementation with isobutyrate improved rumen fermentation and feed digestion in beef cattle in a dose-dependent manner. According to the conditions of this experiment, the optimum daily dose of isobutyrate was about 16.8 g/animal.

摘要译文

本研究的目的是评估异丁酸酯补充剂对瘤胃发酵，尿液中嘌呤衍生物排泄和饲料消化率的影响。在重复的4×4拉丁方实验中使用八个瘤式插管西门塔尔阉牛。在DM的基础上，饮食由60％玉米秸秆和40％浓缩物组成。干物质摄入量（平均9千克/天）限制在自由采食量的90％。四个治疗组每日剂量为0（对照），8.4,16.8或25.2g异丁酸。随着异丁酸酯补充的增加，总VFA浓度（范围64.2-74.0mM）显着增强。由于actate产量的增加和丙酸产量的减少，乙酸盐与丙酸盐的比例（范围2.72-4.25）也显着增加。随着添加异丁酸酯的增加，玉米秸秆中NDF的瘤胃降解得到改善，但豆粕的CP降解性降低。此外，异丁酸酯补充剂导致嘌呤衍生物的尿排泄显着增加。同样，OM，NDF和CP在总管道中的消化率显着增加。目前的结果表明，膳食补充异丁酸以剂量依赖的方式改善了肉牛的瘤胃发酵和饲料消化。根据该实验的条件，异丁酸的最佳日剂量为约16.8g /动物。

Qiang Liu [1];Cong Wang [2];YingXiang Huang [2];KuanHu Dong [2];Hao Wang [2];WenZhu Yang [3]. Effects of isobutyrate on rumen fermentation, urinary excretion of purine derivatives and digestibility in steers[J]. Archiv für Tierernaehrung, 2008,62(5): 377-388