The effect of treatment with long-acting antibiotic at postweaning movement on respiratory disease and on growth in commercial dairy calves

Journal of Dairy Science
Amy L StantonK E Leslie

Abstract

Bovine respiratory disease (BRD) is a major concern when raising replacement heifers because of the high incidence and long-term effects of this disease, such as decreased growth and increased time to first calving. The objective of this study was to determine the effect of tulathromycin (TUL) treatment at postweaning movement on the incidence of BRD in dairy replacement heifers. A total of 1,395 heifers were enrolled between November 2006 and June 2007 at a commercial heifer-raising facility. Calves were randomly assigned either to treatment with TUL or to a positive control group treated with oxytetracycline (TET). Calves treated with TUL were 0.5 times (95% CI: 0.4 to 0.7) less likely to be treated for BRD in the 60 d following enrollment than calves treated with TET. For calves that had no history of BRD in the pre-enrollment period, TET calves weighed 4.9+/-0.5kg less than TUL calves after 6 wk in group housing. If calves were treated for BRD in the pre-enrollment period, there was no treatment effect on growth. Calves with clinical BRD in the 60 d following movement weighed 7.9+/-0.6kg less than calves without BRD after 6 wk in group housing. Treatment with TUL at the time of movement to group housing had a beneficial eff...Continue Reading

References

Mar 27, 2007·The Veterinary Clinics of North America. Food Animal Practice·Jeffery A Carroll, Neil E Forsberg

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Citations

Jul 5, 2013·Journal of the American Veterinary Medical Association·Amy L StantonKenneth E Leslie
Jul 14, 2010·The Veterinary Clinics of North America. Food Animal Practice·Patrick J Gorden, Paul Plummer
Jun 4, 2016·The Veterinary Journal·Katrine J BazeleyKristen K Reyher
Mar 27, 2010·Journal of Dairy Science·A M GreterT J Devries
Oct 30, 2014·Animal Health Research Reviews·Walter M Guterbock
May 21, 2013·Journal of Dairy Science·E K Miller-CushonT J Devries
May 6, 2014·Journal of Dairy Science·C F VergaraG R Oetzel
Nov 5, 2016·The Veterinary Journal·Gerard M MurrayJoseph P Cassidy
Oct 8, 2013·Environmental Monitoring and Assessment·Xunde LiEdward R Atwill

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