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STRESS, COPING BEHAVIOUR AND IMMUNITY IN PIGS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 182-189 in Swine Housings II Proceedings of the 12-15 October 2003 Conference (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1303.(doi:10.13031/2013.15485)
Authors: E. van Erp-van der Kooij, A. H. Kuijpers, F. J. C. M. van Eerdenburg, S. J. Dieleman, D. M. Blankenstein, and M. J. M. Tielen
Keywords: Stress, Coping behaviour, Backtest, Weaning, Mixing, Cortisol, Salmonella, ADV, Immunology
To determine the effect of group composition on backtest responses, and to determine the predictive value of the backtest for the physiological stress response to weaning and mixing, the immunological response to ADV vaccination and the susceptibility for salmonella, 883 pigs were backtested at 3, 10 and 17 days of age. At 3 days, groups were formed according to backtest responses of animals with high responses (HR) only, low responses (LR) only, or mixed groups of animals with high, intermediate and low responses (MISC). Original litters (OR, no cross-fostering) were used as controls. Cortisol responses were measured in saliva in 173 pigs after weaning at 4 weeks of age and in 134 pigs after moving and mixing at 9 weeks of age. ADV specific immunoglobulin (Ig) titers were determined in 216 piglets from vaccinated sows and in 128 fattening pigs after vaccination. In 99 slaughter pigs, salmonella specific antibodies were determined.