Document
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National Institute of Environmental Health Sciences, NIEHS
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

R01ES027863
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

Continuant
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Entity
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U.S. Department of Agriculture, USDA
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

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RDF description of Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep - http://orbis.uaslp.mx/vivo/individual/scopus6375
rights: termsOfUse
date: 2026-08-26T10:53:04
publisher: vivo
type: Document

National Research Council, NRC
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type: BFO_0000020
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

Article
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Animal
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publication venue for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep
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Information Content Entity
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Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep
freetext keyword: birth weight; body mass index; glycoproteins; pregnancy shearing; progesterone fatty acid; glycoprotein; progesterone; animal; birth; birth weight; blood; endocrine system; female; glucose blood level; male; physiology; placenta; pregnancy; sheep; wool; Animals; Birth Weight; Blood Glucose; Endocrine System; Fatty Acids, Nonesterified; Female; Glycoproteins; Male; Parturition; Placenta; Pregnancy; Progesterone; Sheep; Wool
e iscopus: 2-s2.0-85082089968
abstract: Shearing during the latter half of pregnancy is a common practice to improve flock health and productivity. Previous studies have demonstrated that shearing pregnant ewes at mid or late pregnancy is associated with an increase in lamb birth weight. In the present study, we used singleton Polypay × Dorset pregnant sheep, to investigate the potential roles of placental function and changes in maternal metabolism in underlying this increased birth weight response. Two groups were randomly established and blocked at enrollment by animal BW, body condition score and subcutaneous adipose tissue depth. The groups were shorn (SH; n = 18) or not (C; n = 20) at gestational day (GD) 107 ± 1 (mean ± SEM). Weekly maternal plasma samples were collected between shearing and birth, but only six samples were assayed for progesterone, pregnancy-associated glycoproteins (PAG1), glucose and non-esterified fatty acids (NEFAs). At birth, sex, birth weight, and newborn body mass index (BMI) were recorded. Maternal BW during mid- to late-pregnancy was similar between groups. Shearing resulted in increased lamb birth weight and BMI (P < 0.05) regardless of fetal sex but did not affect the maternal concentration of PAG1 or progesterone from GDs 100 to 142. After shearing (GD100) and up to lambing, shorn females had higher circulating glucose concentrations (P < 0.05), but not NEFA, compared to the control group. Maternal circulating PAG1, progesterone, glucose or NEFA concentration across pregnancy did not differ according to lamb sex. Across pregnancy, birth weight was positively associated with PAG1 (P < 0.001), but not with progesterone concentrations. In conclusion, weight and BMI at birth were higher in both sexes upon shearing in singleton pregnancies. Despite PAG1 being associated with birth weight, late-pregnancy shearing did not alter the placental endocrine response. Whether other placental factors are altered upon shearing and may influence the increase in birth weight and BMI rem…
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volume: 14
pmid: 31690360
has funding vehicle: R01ES027863
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related by: authorship_41465
doi: 10.1017/S1751731119002696
chemicalscas: progesterone, 57-83-0; Blood Glucose; Fatty Acids, Nonesterified; Glycoproteins; Progesterone
page end: 806
has funding vehicle: Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, INIFAP
has funding vehicle: U.S. Department of Agriculture, USDA
has funding vehicle: Michigan State University, MSU
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related by: authorship_41462
most specific type: Article
most specific type: Document
type: Document
has funding vehicle: National Institute of Environmental Health Sciences, NIEHS
crisid: 6376
date time value: article date 6376
estado: published
page start: 799
related by: authorship_41463
type: Information Content Entity
accesstype: All Open Access, Hybrid Gold
related by: authorship_41461
related by: authorship_41466
has publication venue: Animal
origen: scopus
has funding vehicle: National Institute of Food and Agriculture, NIFA: MICL02383
issue: 4
type: Generically Dependent Continuant
has funding vehicle: National Research Council, NRC

National Institute of Food and Agriculture, NIFA: MICL02383
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

Michigan State University, MSU
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep

Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, INIFAP
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funding vehicle for: Shearing during late pregnancy increases size at birth but does not alter placental endocrine responses in sheep