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Mechanistic Aspects of Fetal Development Relating to Postnatal Health and Metabolism in Pigs

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Abstract

The productivity of the pig ranks high when compared with the other classes of farm mammals. Reproductive potential is the most important factor contributing to total meat production from this species. The high rate of productivity in the pig is dependent upon early sexual maturity, a comparatively high ovulation rate, relatively short periods of gestation and lactation, as well as the capability of repeating the pregnancy cycle soon after weaning a litter. Some important limitations affecting this production potential are ovulation rate, embryonic death, and perinatal and neonatal losses. This review focuses on (1) the roles of maternal nutrition and ovarian function on fetal development, (2) genotype of the dam affecting fetal development and litter size, (3) maternal circulating hormone concentrations during different stages of gestation as related to fetal development and litter size, (4) effects of specific nutrients and hormones for the dam on fetal development, and (5) maternal reproductive diseases affecting fetal development.

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Acknowledgements

This project was supported by National Research Initiative Competitive Grant no. 2003-35206-12817 from the USDA Cooperative State Research, Education, and Extension Research, and from the Iowa Agriculture and Home Economics Experiment Station, Ames, supported by Hatch and State of Iowa funds.

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Wilson, M.E., Anderson, L.L. (2009). Mechanistic Aspects of Fetal Development Relating to Postnatal Health and Metabolism in Pigs. In: Greenwood, P., Bell, A., Vercoe, P., Viljoen, G. (eds) Managing the Prenatal Environment to Enhance Livestock Productivity. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3135-8_6

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