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A more recent version of this article appeared on February 1, 2003

Papers In Press, published online ahead of print November 4, 2002
J. Lipid Res., doi:10.1194/jlr.M200153-JLR200
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Submitted on April 8, 2002
Revised on October 24, 2002
Accepted on October 25, 2002

Whole Body b-Oxidation of 18:2w6 and 18:3w3 in the Pig Varies Markedly with Weaning Strategy and Dietary 18:3w3

Richard P Bazinet, Ewen G McMillan, Ravi Seebaransingh, Anthony M Hayes, and Stephen C Cunnane

Nutritional Sciences, University of Toronto, Toronto, ON M5S 3E2

Corresponding Author: richard.bazinet{at}utoronto.ca

Segregated early weaning (SEW) into a cleaner nursery increases food intake and growth in pigs, presumably because of reduced immune stimulation compared to conventionally reared, non-segregated pigs (NSW). The aim of the present study was to evaluate the oxidation of linoleic acid (18:2w6) and a-linolenic acid (18:3w3) in SEW and NSW pigs. Pigs consumed a control or high 18:3w3 diet (w6 PUFA/w3 PUFA; 21.3 versus 2.5, respectively) and were weaned at either 14 d old into a SEW nursery or at 21 d old into a conventional NSW nursery. The major acute phase protein of pigs but not haptoglobin increased in 35 d old NSW pigs. Between 35 and 49 d old NSW pigs had 15-25% lower carcass 18:2w6 and 20-30% lower carcass 18:3w3 (% composition) at 49 d old. NSW pigs had a higher whole body oxidation of 18:2w6 (40-120%) and 18:3w3 (30-80%). The high 18:3w3 diet decreased the whole body oxidation of 18:2w6 by 73% and of 18:3w3 by 63% in NSW pigs. We conclude that moderately cleaner housing (SEW) significantly decreases 18:2w6 and 18:3w3 oxidation in pigs.


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A. D. Beaulieu, C. L. Levesque, and J. F. Patience
The effects of dietary energy concentration and weaning site on weanling pig performance
J Anim Sci, May 1, 2006; 84(5): 1159 - 1168.
[Abstract] [Full Text] [PDF]


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