J. Anim Sci.
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J. Anim Sci. 1986. 62:601-612.
© 1986 American Society of Animal Science
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Effects of Oral Doses of Corn Oil and Other Factors on Preweaning Survival and Growth of Piglets1

J. E. Pettigrew2, S. G. Cornelius2, R. L. Moser2, T. R. Heeg3, H. E. Hanke4, K. P. Miller5 and C. D. Hagen2

University of Minnesota,6, St. Paul 55108

Abstract

Piglets were provided supplemental energy as oral doses of corn oil to find whether such treatment might improve survival or weight gains. A total of 1,840 piglets from 182 litters was used. Piglets were allotted to dosed and control treatments within litter on the basis of body weight. Dosed piglets received a total of 8 ml of corn oil in four doses during the first 48 h postpartum. The survival rate to weaning was high and not affected (P>.10) by the corn oil doses. Deaths of piglets low in birth weight were delayed by the fat doses, suggesting some utilization. The fat doses did not affect piglet weight gain. Factors affecting preweaning survival and growth of piglets were also evaluated using data from the same piglets. Specific factors investigated were sex, parity of dam, birth weight, litter size and the mean and standard deviation of piglet birth weights within litters. Male piglets were heavier at birth than females, but there was no sex effect on weight at 7 d or at weaning. Small males were less likely to survive to 3 d than were small females. Litters from primiparous sows were smaller at birth and weaning, but had lower percentages of stillbirths and of preweaning deaths than did those from multiparous sows. Piglets from primiparous sows were more uniform in birth weight. Piglets that were heavier at birth grew faster and were more likely to survive. Litter size affected growth but not survival of piglets. A heavier average birth weight in the litter reduced slighdy the growth rate of individual piglets. An increase in variability of piglet birth weight within a litter was associated with an increase of the percentages of stillbirths and of preweaning mortality. A few litters accounted for a major portion of the mortality. Much of the variation in piglet mortality and growth was not explained by factors considered.

Footnotes

1 Published as Paper No. 14,202 of the scientific journal article series of the Minnesota Agr. Exp. Sta. on research conducted under Minnesota Agr. Exp. Sta. Project No. 0302-4816-66, supported by Hatch funds.

2 Dept. of Anim. Sci.

3 North Central Exp. Sta., Grand Rapids, MN. Present address: Nutrition Professionals, P.O. Box 399, Hortonville, WI 54944.

4 West Central Exp. Sta., Morris, MN.

5 Southern Exp. Sta., Waseca, MN.

6 All authors associated with the Univ. of Minnesota Swine Center.






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Copyright © 1986 by the American Society of Animal Science.