Effect of fats and ionophores on in vitro fermentation of a high concentrate diet

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dc.contributor.author Clary, E.M.
dc.contributor.author Brandt, Robert T., Jr.
dc.contributor.author Nagaraja, T. G.
dc.date.accessioned 2010-11-02T19:42:54Z
dc.date.available 2010-11-02T19:42:54Z
dc.date.issued 2010-11-02
dc.identifier.uri http://hdl.handle.net/2097/6416
dc.description.abstract Batch culture fermentations were used to determine the effects of fat type [none, animal tallow (AT), soybean oil soapstock (SOY), or yellow grease (YG)] and ionophore type [none, lasalocid (L), monensin + tylosin in a ratio of 2.5:1 (MT), or a 50:50 combination of Land MT (LMT)] on in vitro concentrations of lactate (LA) and volatile fatty acids (VFA). Fat-containing substrates had 4% fat on a dry basis. No significant interactions between fat and ionophore treatments were observed. Ionophore treatment resulted in a reduced pH, with the greatest reduction in the L treatment. lbtal VFA and LA increased with ionophore treatment and were highest with L treatment. All ionophore treatments decreased molar proportions of acetate and butyrate and increased propionate. Lasalocid produced a lower molar proportion of acetate and a higher molar proportion of propionate than did MT. Adding fat resulted in a reduction in total VFA and an increase in pH. The reduction in total VFA was less for SOY than AT or YG treatments. No significant differences in LA or VFA molar proportions were observed among fat treatments. Our results indicate that the rate of starch digestion may be slowed by fat, which may translate into a decreased incidence of ruminal acidosis. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 1990 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 90-361-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 592 en_US
dc.subject Beef en_US
dc.subject Fats en_US
dc.subject Ionophores en_US
dc.subject Fermentation en_US
dc.subject Volatile fatty acids en_US
dc.subject Lactic acid en_US
dc.title Effect of fats and ionophores on in vitro fermentation of a high concentrate diet en_US
dc.type Conference paper en_US
dc.date.published 1990 en_US
dc.citation.epage 15 en_US
dc.citation.spage 13 en_US
dc.description.conference Cattlemen's Day, 1990, Kansas State University, Manhattan, KS, February, 1990 en_US
dc.contributor.authoreid tnagaraj en_US

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