Abstract
Parity-four sows were fed either 4.0 Ib/d (control, n = 6) or 14.0 Ib/d (high, n = 9) of feed from d 29 to 45 of gestation. On d 45 of ges~tion, sows were slaughtered and uteri collected for fetal and placental measurements. High-feed-intake sows gained more weight from. d 29 to 45 compared to control sows. Providing feed in excess of established requirements to gestating sows from d 29 to 45 of gestation increased IGF-I concentrations in maternal plasma and decreased crown-rump length variation of the fetus. Increased feed intake resulted in a removal of the correlation between average fetal weight and number of fetuses per sow. We postulate that the increased maternal IGF-I or other maternal responses to high feed intake altered the maternal limit on fetal growth at this stage of gestation.; Swine Day, Manhattan, KS, November 20, 1997
Keywords: Swine day, 1997, Kansas Agricultural Experiment Station contribution, no. 98-142-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 795, Swine, Feed intake, Fetal growth, Insulin-like growth factor
How to Cite:
Musser, R. E., Smith, J. W., II, Burum, L. L., Samland, C. J., Davis, D. L., Goodband, R. D., Tokach, M. D., Nelssen, J. L., Rathbun, T. J. & Dritz, S. S., (1997) “Fetal and maternal responses to high feed intake from day 29 to 45 of gestation”, Kansas Agricultural Experiment Station Research Reports 1(10), 24-26. doi: https://doi.org/10.4148/2378-5977.6538
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