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Litter-size-dependent intrauterine growth restriction in sheep
Year:
2007
Source of publication :
Animal
Authors :
Gootwine, Elisha
;
.
Volume :
1
Co-Authors:
Gootwine, E., Institute of Animal Science, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Spencer, T.E., Department of Animal Science, Center for Animal Biotechnology and Genomics, Texas A and M University, College Station, TX 77843-2471, United States
Bazer, F.W., Department of Animal Science, Center for Animal Biotechnology and Genomics, Texas A and M University, College Station, TX 77843-2471, United States
Facilitators :
From page:
547
To page:
564
(
Total pages:
18
)
Abstract:
Regulation of foetal development in sheep depends on interactions between the intrinsic capacity of the foetus for growth and the maternal environment. Lambs born in multi-foetus litters have relatively small placentae with fewer cotelydons, and lower birth weights. Litter-size-dependent intrauterine growth restriction (IUGR) is evident at mid gestation when metabolic needs of the conceptus are moderate, and overnutrition of ewes with multiple foetuses does not promote growth of their foetuses to the size of singletons. Those observations suggest that placental and conceptus growth in multi-foetus pregnancies is reprogrammed at mid gestation by an as yet undefined mechanism to attenuate foetal growth. This may protect the foetus from severe nutritional insult during late gestation, when its daily growth rate is at a maximum. In that way, lambs born in large litters with relatively lower birth weights may not experience the long-term physiological insults that can be observed in small lambs born to undernourished ewes. © 2007 The Animal Consortium.
Note:
Related Files :
animal experiment
controlled study
Female
fetus
fetus growth
Foetus
Intrauterine growth restriction
placenta
sheep
Show More
Related Content
More details
DOI :
10.1017/S1751731107691897
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21437
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:44
You may also be interested in
Scientific Publication
Litter-size-dependent intrauterine growth restriction in sheep
1
Gootwine, E., Institute of Animal Science, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Spencer, T.E., Department of Animal Science, Center for Animal Biotechnology and Genomics, Texas A and M University, College Station, TX 77843-2471, United States
Bazer, F.W., Department of Animal Science, Center for Animal Biotechnology and Genomics, Texas A and M University, College Station, TX 77843-2471, United States
Litter-size-dependent intrauterine growth restriction in sheep
Regulation of foetal development in sheep depends on interactions between the intrinsic capacity of the foetus for growth and the maternal environment. Lambs born in multi-foetus litters have relatively small placentae with fewer cotelydons, and lower birth weights. Litter-size-dependent intrauterine growth restriction (IUGR) is evident at mid gestation when metabolic needs of the conceptus are moderate, and overnutrition of ewes with multiple foetuses does not promote growth of their foetuses to the size of singletons. Those observations suggest that placental and conceptus growth in multi-foetus pregnancies is reprogrammed at mid gestation by an as yet undefined mechanism to attenuate foetal growth. This may protect the foetus from severe nutritional insult during late gestation, when its daily growth rate is at a maximum. In that way, lambs born in large litters with relatively lower birth weights may not experience the long-term physiological insults that can be observed in small lambs born to undernourished ewes. © 2007 The Animal Consortium.
Scientific Publication
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