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Serum testosterone and progesterone levels and ovarian activity as indicators for seasonal breeding in dromedary camels in Sudan

Author(s): Babiker, E. A, | Ahmed, A. I, | Husna M. E | Abdel-Aziz B. E

Journal: Research Opinions in Animal & Veterinary Sciences
ISSN 2221-1896

Volume: 1;
Issue: 5;
Start page: 309;
Date: 2011;
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Keywords: Season | Testosterone | Progesterone | Ovarian Activity | Camel

The present work was done to investigate the effect of season on level of testosterone, progesterone hormone and ovarian activity in Arabian dromedary camels. Over a period of one year (July 2009–June 2010), jugular blood samples were collected monthly from 7 mature male camels and 12 females at late pregnancy to detect the levels of testosterone and progesterone hormones. A total of 900 ovarian follicles were measured in the slaughterhouses of Tamboul and Um-Elgura to define the effect of season on ovarian activity. The obtained results showed that plasma testosterone levels greatly varied among months of the year. It increased during July and August and decreased during the period from September to February. The level started to increase again during March and remained high until the end of the study in June. Plasma progesterone level was high during July, while it dropped at parturition during August. The level of progesterone remained low during the period from September to February, before it started to rise again in March and remained high until the end of the study in June. The rise of progesterone level in females coincided with the rise of testosterone in males. Ovarian activity was observed throughout the different seasons with a maximum activity during autumn. According to the hormonal findings and ovarian activity, there is a clear breeding season in Arabian dromedary camel in the Butana area, northeast of Sudan extending throughout summer (March – June) and autumn (July–October).
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