J. Anim Sci.
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Journal of Animal Science, Vol 73, Issue 7 1906-1913, Copyright © 1995 by American Society of Animal Science

JOURNAL ARTICLE

Effects of induced or delayed parturition and supplemental dietary fat on colostrum and milk composition in sows

J. R. Jackson, W. L. Hurley, R. A. Easter, A. H. Jensen and J. Odle
Department of Animal Sciences, University of Illinois, Urbana 61801, USA.

Two experiments were conducted to evaluate the effects of inducing premature parturition on the composition of colostrum and milk and the effects of dietary fat supplementation on colostrum and milk composition from premature and delayed farrowing sows. In Trial 1, eight sows were allowed to farrow naturally (d 114, NF sows) and eight sows were induced to farrow (IF sows) prematurely by injection of prostaglandin F2 alpha on d 112 of gestation. Average fat content of sow's milk during the first 12 h postpartum was lower for IF than for NF sows (P < .05), as was overall mean fat percentage (P < .05). In Trial 2, 53 sows were randomly assigned in a 2 (diets) x 5 (parturition treatments) factorial experiment. Dietary treatments fed during the last 2 wk of gestation and throughout lactation were control diet and added fat diet (control diet plus 10% corn oil). Parturition treatments included 1) natural farrowing (d 114), induction of parturition with prostaglandin F2 alpha on 2) d 110, 3) d 111, or 4) d 112 of gestation, and 5) delay of parturition with progesterone followed by injection of prostaglandin on d 115. The added fat diet increased milk fat percentage compared with the control diet (P < .01). Colostral fat percentage was reduced by induction of premature farrowing (d 110 or 111) in sows fed the control diet but was unaffected in sows fed added dietary fat (interaction, P < .05). Mean fat content of colostrum was not reduced in groups receiving the added fat diet that were induced to farrow prematurely.(ABSTRACT TRUNCATED AT 250 WORDS)


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L. A. Averette, J. Odle, M. H. Monaco, and S. M. Donovan
Dietary Fat during Pregnancy and Lactation Increases Milk Fat and Insulin-Like Growth Factor I Concentrations and Improves Neonatal Growth Rates in Swine
J. Nutr., December 1, 1999; 129(12): 2123 - 2129.
[Abstract] [Full Text]


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Copyright © 1995 by the American Society of Animal Science.