Effects of malic acid on rumen fermentation, urinary excretion of purine derivatives and feed digestibility in steers
文献类型: 外文期刊
第一作者: Liu, Q.
作者: Liu, Q.;Wang, C.;Yang, W. Z.;Dong, Q.;Dong, K. H.;Huang, Y. X.;Yang, W. Z.;Yang, X. M.;He, D. C.
作者机构:
关键词: Acetic acid;Ammonia;Beef;Degradability;Detergents;Dietary supplements;Diets;Digestibility;Digestion;Dry matter;Enzymes;Ethers;Excretion;Fermentation;Fibers;Lactic acid;Malic acid;Microorganisms;Organic matter;Propionic acid;Rumen;Volatile fatty acids;pH effects;purines
期刊名称:ANIMAL ( 影响因子:3.24; 五年影响因子:3.223 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The objective of this study was to evaluate the effects of malic acid (MA) supplementation on rumen fermentation, urinary excretion of purine derivatives (PDs) and whole gastro-intestinal tract feed digestibility in steers. Eight ruminally cannulated Simmental steers (465 plus or minus 13 kg) were used in a replicated 4 4 Latin square design. The treatments were: control (without MA), LMA (MA-low), MMA (MA-medium) and HMA (MA-high) with 0.0, 7.8, 15.6 and 23.4 g MA per kg dry matter (DM), respectively. Diets consisted of corn stover and concentrate (60/40, DM basis). DM intake was approximately 9 kg per day, which was 90% of ad libitum intake including 5.4 kg corn stover and 3.6 kg concentrate. Ruminal pH (range of 6.91 to 6.56), ratio of acetate to propionate (range of 3.88 to 3.25), ammonia N (range of 9.03 to 6.42 mg/100 ml) and lactate (range of 91.25 to 76.31 mg/100 ml) decreased linearly as MA supplementation increased, whereas total volatile fatty acid (VFA) concentration (range of 55.68 to 61.49 mM) linearly (P < 0.05) increased with increase in MA supplementation. In situ ruminal neutral detergent fiber (aNDF) degradation of corn stover was improved but the crude protein (CP) degradability of concentrate mix was decreased with increasing the dose of MA. Urinary excretion of PDs was quadratically (P < 0.01) changed with altering MA supplementation (67.88, 72.74, 75.81 and 73.78 mmol/day for control, LMA, MMA and HMA, respectively). Similarly, digestibilities of DM, organic matter (OM), NDF and acid detergent fiber (ADF) in the total tract were also quadratically increased with increasing MA, and no differences in terms of CP and ether extract digestibility were observed. The results indicate that MA supplementation has the potential to improve rumen fermentation and feed digestion in beef cattle. The MA stimulates the digestive microorganisms or enzymes in a quadratic response. In the experimental conditions of this trial, the optimum MA dose was 15.6 g MA per kg DM.
分类号: S8
- 相关文献
作者其他论文 更多>>
-
TREND ANALYSIS OF RESEARCH ON PHYTOPLANKTON TRAITS AS ECOLOGICAL INDICATORS
作者:Hu, T. H.;Sun, J. H.;Hu, T. H.;Hu, C. Q.;Liu, Q. F.;Mai, Y. Z.;Wang, C.;Hu, C. Q.;Liu, Q. F.;Mai, Y. Z.;Wang, C.;Hu, C. Q.;Liu, Q. F.;Mai, Y. Z.;Wang, C.;Liu, Q. F.;Mai, Y. Z.;Wang, C.;Liu, Q. F.;Mai, Y. Z.;Wang, C.
关键词:bibliometrics; publication trends; research hotspots; indicating function; morphology
-
Prediction of raw meat texture and myopathic severity of broiler breast meat with the wooden breast condition by hyperspectral imaging
作者:Liu, Q.;Sun, J.;Pang, B.;Zhuang, H.;Yoon, S. -C;Bowker, B.;Yang, Y.;Zhang, J.
关键词:MORS; meat quality; woody breast myopathy; broiler; shear force
-
Comparative transcriptomic analyses reveal key genes underlying melanin distribution during embryonic development in geese (Anser anser)
作者:Yang, Y.;Wang, C.;Liu, Y.;Li, G.;Wang, X.;Wang, H.;He, D.
关键词:Graylag geese; melanin; genetics; dorsal skin; distal feet
-
EFFECT OF PLANTING LOTUSES ON PLANKTONIC PROKARYOTES IN A SHALLOW LAKE OF A SUBTROPICAL URBAN PARK IN CHINA
作者:Ning, Y. Y.;Li, W. X.;Li, W. X.;Wang, C.;Liu, Q. F.
关键词:artificial ecological modification; freshwater microbiota; lotus; community ecology; lake ecosystem; co-occurrence
-
Transcriptome analysis reveals heat shock protein 70 (HSP70) induced by tembusu virus infection is associated with immune responses
作者:Zhao, D.;Han, K.;Zhang, L.;Huang, X.;Liu, Q.;Yang, J.;Liu, Y.;Li, Y.;Wu, F.;Zhao, D.;Zhao, D.;Zhao, D.;Han, K.;Zhang, L.;Huang, X.;Liu, Q.;Yang, J.;Liu, Y.;Li, Y.;Wu, F.
关键词:heat shock protein 70; innate immune response; tembusu virus; transcriptome analysis
-
EFFECTS OF MICROPLASTIC CONCENTRATIONS ON THE SURVIVABILITY AND REPRODUCTION OF MOINA MACROCOPA
作者:Gao, Y.;Fan, K-Y;Wei, J-X;Zeng, Y-Y;Liu, Q-F;Wang, C.;Fan, K-Y;Wei, J-X
关键词:zooplankton; polystyrene microsphere; intrinsic growth rate; generation time; net reproduction rate
-
Effects of dietary methionine supplementation from different sources on growth performance and meat quality of barrows and gilts
作者:Yuan, P. Q.;Lin, S.;Peng, J. Y.;Li, Y. X.;Liu, Y. H.;Wang, P.;Zhong, H. J.;Yang, X. M.;Che, L. Q.;Feng, B.;Zhang, X. L.;Lin, Y.;Xu, S. Y.;Li, J.;Zhuo, Y.;Wu, D.;Fang, Z. F.;Yuan, P. Q.;Fang, Z. F.;Yuan, P. Q.;Fang, Z. F.;Batonon-Alavo, D. I.;Mercier, Y.;Lin, S.;Fang, Z. F.
关键词:DL-Methionine; Drip loss; Hydroxy-methionine; Meat tenderness; Pork quality