期刊
MOLECULAR REPRODUCTION AND DEVELOPMENT
卷 84, 期 9, 页码 897-904出版社
WILEY
DOI: 10.1002/mrd.22842
关键词
fetus; gestation; intrauterine growth restriction; nutrition; sow
资金
- National Natural Science Foundation of China [31272449, 31422052, 31630074]
- National Key Research and Development Program of China [2016YFD0500506]
- National High Technology Research and Development Program of China (863 Program) [2013AA10230602]
- 111 Project [B16044]
- Jinxinnong Animal Science Developmental Foundation
- Hunan Co-Innovation Center of Animal Production Safety, CICAPS
Intrauterine growth restriction (IUGR) remains a major problem in swine production since the associated low birth weight leads to high rates of pre-weaning morbidity and mortality plus permanent retardation of growth and development. Complex biological eventsincluding genetics, epigenetics, maternal maturity, maternal nutrition, placenta efficiency, uterine capacity, and other environmental factorscan affect fetal growth and development during late gestation, as well as maturity of oocytes, duration of estrus, and both implantation and placentation of conceptuses in uteri of sows. Understanding the physiological changes related to initiation and progress of IUGR are, therefore, of great importance to formulate nutritional strategies that can mitigate IUGR in gilts and sows. Altering the nutritional status of sows prior to mating and during early-, mid-, and late-gestation may be effective at increasing the uniformity of oocytes and conceptuses, decreasing variation among conceptuses during elongation and implantation, and preventing increases in within-litter variation in fetal weights during late gestation. This review summarizes current progress on physiological alterations responsible for IUGR fetuses, as well as possible nutritional interventions to prevent the initiation and continuation of IUGR in gilts and sows.
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