Fiber digestion, VFA production, and microbial population changes during in vitro ruminal fermentations of mixed rations by monensin-adapted and unadapted microbes
نویسنده
چکیده
Abbreviations: aNDF, neutral detergent fiber after -amylase treatment; A:P, molar ratio of acetate to propionate; CP, crude protein; DM, dry matter; HPLC, high-performance liquid chromatography; iBut, isobutyrate; iVal, isovalerate; IVaNDFD, in vitro aNDF digestibility; Mol frac, molar fraction; NFC, non-fiber carbohydrate; qPCR, quantitative polymerase chain reaction; RPS, relative population size; rRNA, ribosomal ribonucleic acid; TMR, total mixed ration; VFA, volatile fatty acids; 2MB, 2-methylbutyrate. ∗ Corresponding author. Tel.: +1 608 890 0075; fax: +1 608 890 0076. E-mail addresses: [email protected], [email protected] (P.J. Weimer), [email protected] (D.M. Stevenson), [email protected] (D.R. Mertens), [email protected] (M.B. Hall). 1 Present address: Mertens Innovation and Research LLS, 6427 County Road A, Belleville, WI 53508-9727, USA. Tel.: +1 608 424 6848. 0377-8401/$ – see front matter. Published by Elsevier B.V. doi:10.1016/j.anifeedsci.2011.06.002 P.J. Weimer et al. / Animal Feed Science and Technology 169 (2011) 68– 78 69
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