AFST: Influence of quebracho tannin extract fed at differing rates within a high-roughage diet on the apparent digestibility of dry matter and fiber, nitrogen balance, and fecal gas flux

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Abstract

© 2019 Elsevier B.V.Sustainable ruminant production is an important element in meeting the high-quality protein requirements of an increasing global population. Gaseous byproducts from ruminant production such as methane (CH4) and nitrous oxide (N2O) can reduce energy efficiency and be detrimental to the environment. Condensed tannins (CT) are interesting alternatives for improving animal and system-level efficiency due to their potential for improving nitrogen use efficiency and reducing enteric CH4. In this study, a Latin rectangle design using four periods and 8 English crossbred steers (435 ± 17 kg BW) were used to determine the effects of quebracho tannin (QT) extract. We evaluated how QT inclusion at 0, 15, 30, and 45 g/kg of dietary dry matter (DM) within a roughage-based diet affected metabolic parameters and fecal gas emissions. Using metabolism crates, total collection of excreta occurred over 4 d followed by an enumeration of fecal gas fluxes via static chambers. The 45 g/k
Original languageEnglish
JournalDefault journal
StatePublished - Feb 1 2020

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