Effects of supplemental protein removal on total and acid-resistant E. coli, total coliforms, and performance in finishing steers

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dc.contributor.author Greenquist, M.A.
dc.contributor.author Gordon, C.M.
dc.contributor.author Sindt, J.J.
dc.contributor.author Drouillard, James S.
dc.contributor.author Phebus, Randall K.
dc.date.accessioned 2010-08-04T17:39:30Z
dc.date.available 2010-08-04T17:39:30Z
dc.date.issued 2010-08-04T17:39:30Z
dc.identifier.uri http://hdl.handle.net/2097/4473
dc.description.abstract Fifty-four crossbred finishing steers were used to measure the effects of reducing supplemental protein (nitrogen) on feedlot performance and fecal shedding of acid-resistant Escherichia coli and total coliform bacteria. A control diet (15.0% crude protein; high protein) was compared to a low protein diet (8.9% crude protein; low protein) from which supplemental nitrogen sources (urea and soybean meal) were removed for the last 8 days of the feeding period. Fecal E. coli and coliform populations were measured prior to harvest. Removal of supplemental nitrogen from feedlot cattle diets did not substantially reduce populations of acid-resistant fecal E. coli and coliforms. Fecal pH tended to be lower (P=0.11) and the molar percentage of fecal isobutyrate and valerate were lower (P<0.05) for steers receiving low protein diets, but total fecal volatile fatty acid concentrations were not affected by dietary treatment. Dry matter intake tended to be lower (P<0.10) for steers fed low protein diets, whereas daily gains, feed:gain, final weights, dressing percentages, and carcass characteristics were similar for cattle fed low and high protein diets. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen's Day, 2003 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 03-272-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 908 en_US
dc.subject Beef en_US
dc.subject Protein removal en_US
dc.subject E. coli en_US
dc.subject Total coliforms en_US
dc.subject Finishing steers en_US
dc.title Effects of supplemental protein removal on total and acid-resistant E. coli, total coliforms, and performance in finishing steers en_US
dc.type Conference paper en_US
dc.date.published 2003 en_US
dc.citation.epage 175 en_US
dc.citation.spage 170 en_US
dc.description.conference Cattlemen's Day, 2003, Kansas State University, Manhattan, KS, March 7, 2003 en_US
dc.contributor.authoreid jdrouill en_US
dc.contributor.authoreid phebus en_US


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