Pregnancy Determination in Uncaptured Feral Horses

The urinary excretion of estrone sulfate ($\text{E}_{1}\text{S}$) by 25 free-roaming feral horses (Equus caballus) was measured by radioimmunoassay applied to extracts of urine-soaked soil. Twelve of 15 mares having$\text{E}_{1}\text{S}$concentrations >1.0 μg/mg creatinine (x̄ = 2.64 ± 1.02 [SD])...

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Bibliographic Details
Published in:The Journal of wildlife management 1988-04, Vol.52 (2), p.305-308
Main Authors: Kirkpatrick, Jay F., Kasman, L. H., Lasley, B. L., Turner, J. W.
Format: Article
Language:English
Subjects:
Equus caballus
Estrogens
Excretion
Foals
Horses
Mountain soils
Pregnancy
Reproduction
Soil samples
Steroids
Urine
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Description
Summary:The urinary excretion of estrone sulfate ($\text{E}_{1}\text{S}$) by 25 free-roaming feral horses (Equus caballus) was measured by radioimmunoassay applied to extracts of urine-soaked soil. Twelve of 15 mares having$\text{E}_{1}\text{S}$concentrations >1.0 μg/mg creatinine (x̄ = 2.64 ± 1.02 [SD]) produced foals. All 10 mares with$\text{E}_{1}\text{S}$concentrations
ISSN:0022-541X
1937-2817
DOI:10.2307/3801239