Add time:09/27/2019         Source:sciencedirect.com

Five studies were conducted to evaluate the ability of growth-promoting implants containing a pellet of Tylosin tartrate (cas 1405-54-5) [Component®(Ivy Animal Health, Overland Park, KS) with Tylan® (Elanco Animal Health, Indianapolis, IN)] to prevent implant site abscesses in feedlot cattle. Component® with Tylan® implants contain an additional pellet with 29 mg tylosin tartrate as a local antibacterial. Component® with Tylan® was used in heifers and steers and was tested as the initial implant, administered on arrival at the feedlot, or as a re-implant, administered later during the feeding period. Cattle implanted with Component® with Tylan® had or tended to have fewer implant site abscesses. Both incidence and severity of defects were lower; the incidence of missing implants was reduced to nearly zero with Component® with Tylan®. In three studies in which performance was measured, Component® with Tylan® tended (P=0.07 in Study 2, P=0.06 in Study 4, and P=0.09 in Study 5) to improve ADG, and it improved (P=0.03) feed conversion efficiency in the only study in which it was measured (Study 4). Differences in hot carcass weights (HCW) with Component® with Tylan® (3.0, 2.7, and 2.4 kg in Study 2, 4, and 5, respectively) were also observed. Results of implant site evaluations conducted in feedyards as part of a quality assurance program confirm the research results regarding implant site abscesses.

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