Pattern of faecal 20-oxopregnane and oestrogen concentrations during pregnancy in wild plains zebra mares
| Autor: | Hlengisizwe Ncube, Patrick Duncan, Andre Ganswindt, Sophie Grange, Florian Barnier, Elissa Z. Cameron |
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| Přispěvatelé: | Forest Resources and Wildlife Management [Bulawayo], National University of Science and Technology [Bulawayo], Centre d'études biologiques de Chizé (CEBC), Centre National de la Recherche Scientifique (CNRS), School of Animal, Plant & Environmental Sciences, University of the Witwatersrand [Johannesburg] (WITS), Mammal Research Institute, University of Pretoria [South Africa], School of Zoology [Hobart], University of Tasmania [Hobart, Australia] (UTAS), Department of Production Animal Studies |
| Rok vydání: | 2011 |
| Předmět: |
Male
0106 biological sciences Time Factors 040301 veterinary sciences media_common.quotation_subject Zoology Biology 010603 evolutionary biology 01 natural sciences Pregnancy diagnosis 0403 veterinary science Feces Fetus Sex Factors Oestrogen Endocrinology Animal science 20-Oxopregnane Pregnancy Sex factors medicine Animals Endocrine system Plains zebra media_common Reproduction Estrogens Equidae 04 agricultural and veterinary sciences Pregnanes medicine.disease biology.organism_classification Late pregnancy Non-invasive method [SDE]Environmental Sciences Pregnancy Animal Female Equus quagga Animal Science and Zoology Seasons Enzyme immunoassays Hormone |
| Zdroj: | General and Comparative Endocrinology General and Comparative Endocrinology, Elsevier, 2011, 172, pp.358-362. ⟨10.1016/j.ygcen.2011.03.027⟩ |
| ISSN: | 0016-6480 1095-6840 |
| Popis: | International audience; Regulative endocrine mechanisms influence the reproductive behaviour and success of mammals, but they have been studied predominantly in domestic and captive animals. The study aims at describing the pattern of faecal 20-oxopregnane and oestrogen concentrations during pregnancy in wild plains zebra Equus quagga chapmani. Data were collected during wet and dry seasons 2007-2009. Enzyme Immunoassays were used to determine 20-oxopregnane and oestrogen concentrations in faecal samples (n=74) collected from individual mares (n=32) whose dates of foaling were known through long-term monitoring. Hormonal profiles were described with a General Additive Model (GAM: Hormone ∼ Days to Foaling). Faecal 20-oxopregnanes have a complex cycle during pregnancy (GAM, n=70, R(2)=0.616, p200ng/g DW) of faecal 20-oxopregnanes associated with high (>160ng/g DW) faecal oestrogen levels indicate mid-pregnancy in c.90% of cases (16/17). High faecal 20-oxopregnanes (>200ng/g DW) and low faecal oestrogen levels ( |
| Databáze: | OpenAIRE |
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