Effect of monensin and tylosin on average daily gain, feed efficiency and liver abscess incidence in feedlot cattle
- PMID: 4077750
- DOI: 10.2527/jas1985.6151058x
Effect of monensin and tylosin on average daily gain, feed efficiency and liver abscess incidence in feedlot cattle
Abstract
Fourteen trials were conducted to evaluate the effects of feeding monensin at 33 ppm alone, tylosin at 11 ppm alone and the two feed additives in combination on the average daily gain, average daily feed intake, feed:gain ratio and the incidence of liver abscesses in feedlot cattle. Monensin reduced feed intake and improved feed efficiency (P less than .05), and had no effect on average daily gain. Tylosin improved average daily gain (P less than .05) and had no effect on daily feed intake. The effect of tylosin on feed efficiency approached significance. The interaction of monensin and tylosin was nonsignificant for daily gain, daily feed intake and feed:gain ratio. Monensin had no effect on liver abscess incidence, while tylosin reduced abscess incidence from 27 to 9%.
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