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Vitamin E and omega-3 fatty acids independently attenuate plasma concentrations of proinflammatory cytokines and prostaglandin E in lipopolysaccharide-challenged growing–finishing pigs

Upadhaya, S.D., Kim, J.C., Mullan, B.P., Pluske, J.R. and Kim, I.H. (2015) Vitamin E and omega-3 fatty acids independently attenuate plasma concentrations of proinflammatory cytokines and prostaglandin E in lipopolysaccharide-challenged growing–finishing pigs. Journal of Animal Science, 93 (6). pp. 2926-2934.

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Link to Published Version: http://dx.doi.org/10.2527/jas.2014-8330
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Abstract

This study tested the hypothesis that vitamin E (Vit E) and omega-3 fatty acids will additively attenuate the production of proinflammatory cytokines and PGE2 in immune system–stimulated growing–finishing pigs. A total of 80 mixed sex pigs weighing 50.7 ± 0.76 kg (mean ± SE) were blocked and stratified based on sex and BW to a 2 × 2 factorial design with the respective factors being 1) without and with 300 IU Vit E and 2) without and with 25% replacement of tallow to linseed oil as a source of n-3 fatty acids. Each treatment consisted of 4 replicate pens with 5 pigs (3 barrows and 2 gilts) per pen. All pigs were challenged with an intramuscular injection of Escherichia coli lipopolysaccharide (LPS; O111:B4) twice weekly over the 6-wk experiment. After LPS challenge, pigs fed a diet supplemented with n-3 fatty acids had fewer (P < 0.05) white blood cells and tended to show both a reduced (P < 0.10) proportion of lymphocytes and IgG concentration compared with pigs fed a diet without any supplements. Supplementation of n-3 fatty acids reduced (P < 0.01 and P < 0.05) serum concentrations of cortisol and tumor necrosis factor α (TNF-α), respectively. The serum concentration of PGE2 was decreased (P < 0.05) with supplementation of both Vit E and n-3 fatty acids; however, the extent of the reduction was greater (P < 0.001) in pigs fed an n-3 fatty acid–supplemented diet. However, there were no additive effects of the combined supplementation of Vit E and n-3 fatty acids on serum concentrations of proinflammatory cytokines and PGE2. The results suggest that n-3 fatty acids independently attenuate production of TNF-α and PGE2 in immune system–stimulated growing–finishing pigs.

Publication Type: Journal Article
Murdoch Affiliation: School of Veterinary and Life Sciences
Publisher: American Society of Animal Science
Copyright: © 2015. American Society of Animal Science.
URI: http://researchrepository.murdoch.edu.au/id/eprint/27850
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