The effect of age and teat order on α1-acid glycoprotein, neutrophil-to-lymphocyte ratio, cortisol, and average daily gain in commercial growing pigs

Carolyn Stull, Cassandra J. Kachulis, James L. Farley, Gerard J. Koenig

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The objectives of the study were to evaluate age and teat order on a performance trait, average daily gain, and on physiological stress indicators, α1-acid glycoprotein (AGP), neutrophil-to-lymphocyte ratio (N:L), and cortisol in commercial growing pigs from weaning to market age. Pigs (n = 129) from five commercial California farms were weighed and blood-sampled at 28-d intervals from 28 to 168 d of age. Laboratory assays were performed from blood samples to quantify cortisol, AGP, and N:L. Age and facility effects (P < .001), but not teat order effects (P > .05), were found for all three physiological traits and ADG. Pigs that routinely suckled from teats 1, 4, or 6 (numbered from anterior to posterior on the upper teat bank) had similar (P > .05) ADG and BW throughout the production cycle. No correlation (P > .05) was found between cortisol, AGP, and N:L. The use of these physiological and production traits as stress and health indices of growing pigs in commercial facilities has limitations in comparing data between facilities or different ages of pigs.

Original languageEnglish (US)
Pages (from-to)70-74
Number of pages5
JournalJournal of Animal Science
Volume77
Issue number1
DOIs
StatePublished - Jan 1 1999

Keywords

  • Growth
  • Lymphocytes
  • Neutrophils
  • Nursing Order
  • Pigs
  • Stress

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

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