Effects of diet for early-weaned crossbred beef steers on metabolic profiles and febrile response to an infectious bovine herpesvirus-1 challenge

T. R. Whitney, G. C. Duff, J. K. Collins, D. W. Schafer, D. M. Hallford

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Thirty-three early-weaned steers (average age at weaning = 132 days) were used to evaluate effects of protein supplementation of forage diets vs. a 70% concentrate diet fed during a backgrounding phase (84 d) on metabolic profiles and febrile response to an infectious bovine herpesvirus-1 (BHV-1) challenge during a receiving phase (27 d). Backgrounding treatments included a bermudagrass hay diet (CTRL); CTRL plus soybean meal (SBM) fed at 0.175% of BW (as-fed); CTRL plus SBM at 0.35% of BW; or a 70% concentrate (CONC) diet. During the receiving phase, all steers were fed CONC and intranasally challenged on d 85 with an infectious dose of BHV-1. Unexpectedly, 3 d after the BHV-1 challenge, serum IgG was greater (P < 0.05) for steers fed forage diets vs. CONC. Three and 4 d after the BHV-1 challenge, rectal temperatures were greater (P < 0.01) for protein-supplemented steers vs. CTRL. We conclude that a higher quality diet fed to early-weaned steers during a backgrounding phase enhances average daily gain and gain to feed ratio, and increases febrile response (measured by rectal temperature) to an infectious BHV-1 respiratory challenge.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalLivestock Science
Volume101
Issue number1-3
DOIs
StatePublished - May 1 2006

Keywords

  • Beef steers
  • Early weaning
  • Protein
  • Respiratory disease
  • Serum chemistry

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

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