Rumen Metabolism and Feedlot Responses by Steers Fed Tylosin and Monensin

Horton, G.M.J.; Nicholson, H.H.

Canadian Journal of Animal Science 60(4): 919-924

1980


ISSN/ISBN: 0008-3984
DOI: 10.4141/cjas80-108
Accession: 068493168

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Abstract
Ninety-six Hereford steers with an average weight of 336 kg were fed tylosin (Tylan, Elanco Division, Eli Lilly & Co., Indianapolis, In., U. S. A.) (11 mg/kg of diet), monensin (Rumensin, Elanco Division, Eli Lilly & Co., Indianapolis, In., U. S. A.) (33 mg/kg of diet), tylosin plus monensin or a nonmedicated control diet for 105 days. The diets contained 60% barley, 36% alfalfa meal, 2% tallow, 1% Co + I salt and 1% vitamin premix. Organic matter and crude protein digestibilities tended to be higher (P   0.05) than steers with abscessed livers.