Effect of mass medication with antibiotics at feedlot entry on the health and growth rate of cattle destined for the Australian domestic market

Abstract

Mass medication with tilmicosin at feedlot entry of cattle destined for the Australian domestic market may be used to reduce disease occurrence and increase growth rate during periods of high risk for BRD.

Feedlot entry characteristics and climate: their relationship with cattle growth rate, bovine respiratory disease and mortality

“…The magnitude of the negative effect of BRD on ADG found in this experiment has been reported previously 3 and is presumably due to the combined effects of inflammation and anorexia. In this experiment, the effects of BRD on ADG are greater than short term anorexia.…”

Lower respiratory tract disease in Thoroughbred racehorses: Analysis of endoscopic data from a UK training yard

“…The use of antibiotic therapy in groups of horses with lower respiratory tract disease appears to be justified by our current understanding of the infectious aetiology of the syndrome and is consistent with concepts of metaphylaxis for respiratory disease in other animal populations (Cusack 2004). The importance of the problem however warrants much greater attention to critical analysis of treatment regimes in the future.…”

Use of Antimicrobial Metaphylaxis for the Control of Bovine Respiratory Disease in High-Risk Cattle

“…8,13 However, the use of antimicrobial metaphylaxis upon feedlot arrival to cattle considered at high risk for development of clinical BRD signs has consistently been shown to reduce morbidity and mortality. [14][15][16][17][18][19][20] Metaphylaxis is defined as the treatment of an entire group or population of cattle with a US Food and Drug Administration (FDA)-approved antimicrobial with the intent of controlling the incidence of acuteonset disease in highly stressed, newly received calves. 21 The etiology of BRD is multifactorial and often polymicrobial, with complex interactions among the host immune system, viral and bacterial pathogens, and the multiple phases of the beef production system resulting in environment, social and relocation challenges.…”