Animal Reproduction (AR)
Animal Reproduction (AR)
Original Article

Follicular fluid composition in relation to follicular size in pregnant and non-pregnant dromedary camels (Camelus dromedaries)

K.H. El-Shahat, A.M. Abo-El Maaty, A.R. Moawad

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The aim of this study was to evaluate the effects of the reproductive status of female dromedary camels (pregnant vs. non-pregnant) on the chemical composition, hormonal profile and antioxidant capacity of follicular fluid collected from different sized ovarian follicles during the breeding season. One hundred ovaries were collected at slaughterhouse from fifty female dromedary camels. The ovaries were collected in pairs from each animal and allocated into two groups according to the reproductive status of the females; 25 pairs were obtained from pregnant females and 25 pairs were obtained from non-pregnant animals. The follicles on each ovary were categorized according to their diameter into three categories; small (1-3 mm), medium (4-9 mm) and large (10-20 mm). Follicular fluid (FF) aspirated from each follicle category from each pair of ovaries was analyzed. The results showed that the average number of follicles per ovary was greater (P < 0.05) in the ovaries obtained from nonpregnant females compared to those collected from pregnant ones (6.4 ± 1.2 vs. 3.6 ± 0.9, respectively). Progesterone concentrations were significantly higher in the follicular fluid collected from all follicle categories in pregnant animals than those obtained from nonpregnant animals. Glucose concentrations were higher (P < 0.05) in the follicular fluid collected from large follicles in the non-pregnant group (64.9 ± 6.1 mg/dl) than those obtained from the same follicle category in the pregnant ovaries (45.4 ± 4.0 mg/dl). Concentrations of malondialdehyde (MDA) were higher (P < 0.05) in the FF collected from small, medium and large follicles in pregnant ovaries than non-pregnant ones. In conclusion, these data indicate that FF composition differs according to the reproductive status of the female. In pregnant camels, the presence of the corpus luteum on the ovaries could play an important role not only in the process of follicle growth and development, but also in the concentrations of biochemical metabolites and hormonal profiles in the FF of dromedary camels.


camel, corpus luteum, follicular fluid, ovary, follicular size, pregnancy
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