A Comparison of two Mannheimia haemolytica vaccination strategies in freshly weaned southeastern feedlot heifers

Authors

  • Karen C. Rogers Veterinary Research and Consulting Services, LLC, Greeley, CO 80634
  • Thomas A. Portillo Veterinary Research and Consulting Services, LLC, Greeley, CO 80634
  • Dennis E. Smialek Veterinary Research and Consulting Services, LLC, Greeley, CO 80634
  • Del G. Miles Veterinary Research and Consulting Services, LLC, Greeley, CO 80634
  • Terry W. Lehenbauer Veterinary Medicine Teaching and Research Center, Tulare, CA 93274
  • Russell Smyth Manager, Ward Feed Yard, Inc. Larned, KS 67550

DOI:

https://doi.org/10.21423/bovine-vol43no1p27-31

Keywords:

bovine, feedlot, BRD, Mannheimia haemolytica toxoid, MLV vaccine, calves, feedlots, heifers, immunization, liveweight gain, vaccination, vaccines

Abstract

A total of 1,017 southeastern crossbred heifer calves (average weight 572 lb; 260 kg) were used to determine the effect of administering Pyramid® 5 and Presponse® SQ (Fort Dodge Animal Health, Overland Park, KS) as two separate injections (SEP), or as a combination product (COMB), on health and performance in a commercial feedlot setting. There were no significant differences (P>0.05) between the two vaccine treatments for morbidity, mortality, or realizers. The SEP group had significantly greater weight gain (P=0.05) and average daily gain (P<0.01) at reprocessing (day 119). These differences subsided by harvest. Hot carcass weights, estimated live-weights and average daily gains at the end of the feeding period were similar among the vaccination groups (P>0.05).

Cover image of Volume 43, No.1 of the Bovine Practitioner: a photo of a herd of Jersey cattle grazing against a picturesque mountain scene

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Published

2008-12-31

Issue

Vol. 43, No. 1 (2009 Spring)

Section

Articles

How to Cite

A Comparison of two Mannheimia haemolytica vaccination strategies in freshly weaned southeastern feedlot heifers. (2008). The Bovine Practitioner, 43(1), 27-31. https://doi.org/10.21423/bovine-vol43no1p27-31

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