Effects of megasphaera elsdenii on ruminal pH, ruminal concentrations of organic acids, and bacterial genomes following a grain challenge

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dc.contributor.author McDaniel, M.R.
dc.contributor.author Higgins, James J.
dc.contributor.author Heidenreich, J.M.
dc.contributor.author Shelor, M.K.
dc.contributor.author Parsons, G.L.
dc.contributor.author Henning, P.H.
dc.contributor.author Drouillard, James S.
dc.date.accessioned 2009-12-07T15:37:09Z
dc.date.available 2009-12-07T15:37:09Z
dc.date.issued 2009-12-07T15:37:09Z
dc.identifier.uri http://hdl.handle.net/2097/2241
dc.description.abstract Upon arrival in feedlots, cattle normally must be adapted to high-concentrate diets. The microbial population in the rumen of incoming cattle normally is suited to digestion of forages, and when cattle are transitioned onto concentrate diets, opportunistic bacteria that produce lactic acid can proliferate rapidly, leading to excesses of lactic acid in the rumen. High levels of lactic acid in the rumen may cause mild to severe acidosis. Megasphaera elsdenii is a lactate-utilizing bacterium that normally is present in rumens of cattle that have been adapted to high-grain diets, but numbers of the organism are relatively low during the step-up phase. Increasing the numbers of lactate-utilizing bacteria in newly arrived cattle by orally dosing with M. elsdenii may be a useful means of reducing the risk of ruminal acidosis in feedlot cattle. Our objectives were to evaluate ruminal parameters and determine efficacy of increasing ruminal populations of lactateutilizing bacteria in cattle following an abrupt diet change and administration of 10 mL (low dose), 100 mL (medium dose), or 1000 mL (high dose) of a culture containing 1.62 × 108 CFU/mL of live M. elsdenii compared with a control group given a placebo without live Megasphaera. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen's Day, 2009 en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1010 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution ; no. 09-168-S en_US
dc.subject Beef en_US
dc.subject Cattle en_US
dc.subject Megasphaera elsdenii en_US
dc.title Effects of megasphaera elsdenii on ruminal pH, ruminal concentrations of organic acids, and bacterial genomes following a grain challenge en_US
dc.type Conference paper en_US
dc.date.published 2009 en_US
dc.citation.epage 65 en_US
dc.citation.spage 62 en_US
dc.description.conference Cattlemen's Day, Kansas State University, Manahttan, KS, March 6, 2009 en_US
dc.contributor.authoreid jhiggins en_US
dc.contributor.authoreid heid0129 en_US
dc.contributor.authoreid mshelor2 en_US
dc.contributor.authoreid gparsons en_US
dc.contributor.authoreid jdrouill en_US

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