|
Kirkpatrick, J. F., Kasman, L. H., Lasley,, B. L., & Turner, J. W. J. (1988). Pregnancy Determination in Uncaptured Feral Horses. J Wildl Manag, 52(2), 305–308.
Abstract: 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 mg/mg creatinine (x = 2.64 +- 1.02 [SD]) produced foals. All 10 mares with $\text{E}{1}\text{S}$ concentrations <1.0 mg/mg creatinine (x = 0.44 +- 0.26) did not foal. Extracting urine from soil and measuring $\text{E}{1}\text{S}$ and creatinine can be used to determine pregnancy in free-roaming feral horses without the stress of capture or immobilization.
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King Jm, K. H. (1965). The use of the oripavine derivative M.99 for the restraint of equine animals and its antgonism with the related compund M.
|
|
|
Klingel, H. (1967). Soziale Organisation und Verhalten freilebender Steppenzebras (Equus quagga). Z. Tierpsychol., 24(5), 580–624.
|
|
|
Klingel, H. (1989). Odd-toed Ungulates, Horses. In B. Grzimek (Ed.), Grzimek's Encyclopedia of Mammals (Vol. 4, 550+pp. 557–594). McGraw Hill.
|
|
|
Klingel, H. (1991). Dix ans parmi les zèbres. Terre Sauvage, 48, 34–43.
|
|
|
Klingel, H. (1991). Tausend Zebras im Computer. Das Tier, 10, 8–16.
|
|
|
Klingel, H. (1990). Kalameili – future home of the Przewalski horse? In S. Seifert (Ed.), Proceedings of the 5th International Symposium on the Preservation of the Przewalski Horse, Leipzig (pp. 221–224). Leipzig: Zoolog Garten.
|
|
|
Kusunose R, S. H. (1984). The behavioral development of thouroughbred foals and the relationship between dams and foals. Jap J Zootechn Sci, 55, 263–271.
|
|
|
LANG EM, L. E. H. M. A. N. N. E. von. (1972). Wildesel in Vergangenheit und Gegenwart. Zool. Garten., 41, 157–167.
|
|
|
Lloyd Ph, H. D. (1980). A case of adaptation and rejection of foals in Cape Mountain Zebra. S Afr Wildl Res, 10, 61–62.
|
|