A Comparison of two multivalent viral vaccine programs in feedlot calves at high risk of developing undifferentiated fever/bovine respiratory disease

Authors

  • Brian K. Wildman Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • G. Kee Jim Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • Tye Perrett Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • Oliver C. Schunicht Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • Sherry J. Hannon Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • R. Kent Fenton Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada
  • Sameeh M. Abutarbush Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, PO Box 3030, lrbid, Jordan, 22110
  • Calvin W. Booker Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta TlS 2A2, Canada

DOI:

https://doi.org/10.21423/bovine-vol43no2p130-139

Keywords:

bovine, BRD, feedlot, vaccine, beef cattle, calves, carcass composition, carcass grading, carcass quality, carcass yield, economic analysis, feedlots, immunity, liveweight gain, potency, respiratory diseases, risk assessment, risk factors, vaccination, vaccines, viral diseases

Abstract

A field study was conducted to compare the relative effects of two multivalent viral vaccine programs on animal health, feedlot performance, and carcass characteristics of feedlot calves at high risk of developing undifferentiated fever/bovine respiratory disease (UF/BRD). Upon arrival at the feedlot, 3,264 animals were randomly allocated to one of two experimental groups: PYR5 (Pyramid® 5, Fort Dodge Animal Health, Division of Wyeth, Overland Park, Kansas) or EXP5 (Express® 5, Boehringer Ingelheim Vetmedica, Inc., St. Joseph, Missouri). All animals were re-vaccinated with their respective vaccines at 139 days-on-feed. The initial undifferentiated fever (UF) treatment rate was significantly (P<0.05) lower in the PYR5 group than in the EXP5 group (RR=0.70, 95% CI=0.53-0.93). On a live-weight basis, the dry matter-to-gain ratio (DM:G) was significantly (P<0.05) improved in the PYR5 group compared to the EXP5 group. Yield grades were improved in the PYR5 group, with a significantly (P<0.05) lower proportion of YG USDA 3 carcasses in the PYR5 group compared to the EXP5 group. No significant differences were detected in any other animal health, feedlot performance, or carcass characteristic variables between the experimental groups at the P<0.05 level. The economic analysis showed an advantage of $1.36 US per animal in the PYR5 group due to the lower initial UF treatment rate and proportion of YG USDA 3 carcasses.

Cover image of Volume 43, No.2 of the Bovine Practitioner: a photo of cattle grazing on a green field at midmorning. There are two trees without leaves and a small group of the cows stand between them, looking at the photographer.

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Published

2009-06-01

Issue

Vol. 43, No. 2 (2009 Summer)

Section

Articles

How to Cite

A Comparison of two multivalent viral vaccine programs in feedlot calves at high risk of developing undifferentiated fever/bovine respiratory disease. (2009). The Bovine Practitioner, 43(2), 130-139. https://doi.org/10.21423/bovine-vol43no2p130-139

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