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Leucocyte sub-sets and acute phase proteins are associated with productivity in Large White pigs

Published online by Cambridge University Press:  20 November 2017

M. Clapperton*
Affiliation:
Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS.
S.C. Bishop
Affiliation:
Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS.
E.J. Glass
Affiliation:
Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS.
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Extract

The exposure of pigs to different pathogens compromises productivity, i.e. reduces weight gain and food intake (Balaji et al., 2000; Greiner et al., 2000), even in the absence of clinical disease. Infection also often causes the release of acute phase proteins and the proliferation of certain leucocyte subsets (Baumann and Gauldie, 1994; Licence and Binns, 1995). Therefore, it may be hypothesised that associations should exist between productivity and a range of immunological traits in apparently-healthy animals facing the same infectious challenge. This would be important in pigs suffering sub-clinical infections, as it would enable predictions of health status and effects of infection on performance. This study investigated such associations in apparently-healthy pigs facing unknown subclinical challenges.

Type
ISAE
Copyright
Copyright © The British Society of Animal Science 2003

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References

Balaji, R., Wright, K.J., Hill, D.M., Knoppel, E.L. and Minton, J.E. 2000. Acute phase responses of pigs challenged orally with Salmonella typhimurium. Journal of Animal Science 78: 18851891.CrossRefGoogle ScholarPubMed
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Licence, S.T., and Binns, R.M. 1995. Major long-term changes in gamma delta T-cell receptor positive and CD2+ T-cell subsets after neonatal thymectomy in the pig: a longitudinal study lasting nearly 2 years. Immunology 85: 276284.Google ScholarPubMed