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Fecal progesterone metabolites and ovarian activity in cycling and pregnant mountain gazelles (Gazella gazella) |
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| Authors: | Mohammed Osama B Green Daphne I Holt William V |
| Institution: | a King Khalid Wildlife Research Centre, Saudi Wildlife Commission, P.O. Box 61681, Riyadh 11575, Saudi Arabia b Conservation Programmes, Zoological Society of London, Regent's Park, London NW1 4RY, United Kingdom c Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, United Kingdom d Present address: Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia |
| Abstract: | Fecal reproductive progestagen monitoring in the mountain gazelle (Gazella gazella) provided a non-invasive method for tracking reproductive cycling, estimating age of sexual maturity and diagnosing pregnancy in this species of gazelle. Fresh fecal samples were collected from eight female mountain gazelle (Gazella gazella) for a period of two months. Two of the animals were pregnant while the other six were not. Using the progestagen profile the luteal phase, interluteal (follicular) phase and estrous cycle in adult female gazelles were determined to be 12.5 ± 1.2, 5.9 ± 0.59 and 18.8 ± 0.98 days respectively. Significant inter-animal differences in fecal progestagen concentration were observed in both the luteal and follicular phases. Significant differences were observed in the levels of fecal progestagen between cycling females and females in late pregnancy. Low concentrations of fecal progestagen in females aged less than 18 months old indicated that sexual maturity in captivity is not attained before that age. |
| Keywords: | Gazelle Cycles Estrus Pregnancy Progestagens Non-invasive monitoring |
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