Placental Development in the Sheep and its Relation to Fetal Development: A qualitative and quantitative anatomic and histologic study
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A quantitative macroscopic and microscopic investigation was performed upon the placenta of the sheep. Macroscopic data were obtained from 235 cases of single pregnancy, 285 cases of twin pregnancy, 45 cases of triplet pregnancy, and from one case of quadrulet pregnancy. Macroscopic data obtained include: weight of the uterine horns, weight of the fetal membranes, weight of the total cotyledonary mass, and weight of the fetus. Microscopic data were mainly obtained from twin pregnancies (about 30 placentas in each of the nine age groups, group I being excluded from this investigation). The following microscopic data were calculated: vascularization of the caruncles (being the maternal component), degree of branching of the villi, total villous surface, vascularization of the villi, and total villous blood volume.
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The ovine placenta is of the cotyledonary type, comprising approximately 70 placentomes of 0.5-4.0 cm diameter in a singleton pregnancy.
“The ovine placenta is of the cotyledonary type, comprising approximately 70 placentomes of 0.5 -4.0 cm diameter in a singleton pregnancy (516).”
From Placental Origins of Chronic Disease (2016) · cites this paper as [516]
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Santos, R. L., Filho, J. B. B., Marques, A. D. P., & de Andrade, J. S. (1998) · Brazilian Journal of Veterinary Research and Animal Science · doi:10.1590/s1413-95961998000400002 · Cited by 3 · see citing works
Placental Vascularity: A Story of Survival
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Estudo comparativo da distribuição temporal do sistema VEGF na placenta de cães e de bovinos
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Fetal oxygen delivery and consumption and blood gases in relation to gestational agePreprint
Rurak, D. W., Shen, M. Y., & Joseph, K. S. (2021) · arXiv (Cornell University) · doi:10.48550/arxiv.2109.11616
Retained Placenta and Fetal Membranes
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Targeted pre-breeding nutrition improves reproductive performance in an accelerated lambing system
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- Authors
- Stegeman, J. H. J.
- Venue
- Bijdragen tot de Dierkunde
- Publisher
- Walter de Gruyter GmbH
- Published
- 1974
- Volume
- 44
- Issue
- 1
- Pages
- 3-72
- ISSN
- 0067-8546 (ISSN-L)
- 2666-0644
- OpenAlex
- W1848916969
- Cited by
- 83
- References
- 34
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 5 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 2 · 2016: 1 · 2015: 1 · 2013: 3
- FWCI
- 2.39
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Locations
- Bijdragen tot de Dierkunde (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Reproductive Physiology in Livestock
- Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
- Life Sciences › Immunology and Microbiology › Immunology › Reproductive System and Pregnancy
- Keywords
- placental development, sheep placenta, fetal development, twin pregnancy, multiple pregnancy, cotyledons, placental vascularization, fetal membranes, placental weight
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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