Spermatogenesis and cellular associations in the seminiferous epithelium of Guinea cock (Numida meleagris)

Abdul-Rahman, I. I., Obese, F. Y. and Robinson, J. E. (2017) Spermatogenesis and cellular associations in the seminiferous epithelium of Guinea cock (Numida meleagris). Canadian Journal of Animal Science, 97(2), pp. 241-249. (doi: 10.1139/cjas-2016-0068)

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Abstract

The study describes the steps of spermiogenesis and stages of seminiferous epithelial cycle in breeding guinea cocks. Sections embedded in epoxy resin were employed for the determination of the stages of seminiferous epithelial cycle in the guinea fowl. Acrosomic granules aided in identifying the initial steps of spermiogenesis, whereas nuclear morphological changes facilitated the identification of subsequent stages. Eleven steps of spermiogenesis and nine stages of seminiferous epithelium were recognized in the guinea fowl testis. Three spermatogonial types, namely, spermatogonial A, B and intermediate were identified in the guinea fowl seminiferous epithelium. Spermatogonial A and preleptotene spermatocytes had the largest (P < 0.05) nuclei diameters in the seminiferous epithelium, whereas round spermatids had the least. Within germ cells, no significant (P > 0.05) differences were found among birds in spermatogonial A and intermediate spermatogonial nuclei diameters. Spermatogonial B, preleptotene primary spermatocyte, type I spermatocyte (primary spermatocyte in prophase I), and round spermatid nuclei diameters were, however, bigger (P < 0.05) in some birds than others. The classification of the seminiferous epithelial cycle in the guinea fowl was similar to that described in other birds and mammals.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Robinson, Dr Jane
Authors: Abdul-Rahman, I. I., Obese, F. Y., and Robinson, J. E.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Canadian Journal of Animal Science
Publisher:NRC Research Press
ISSN:0008-3984
ISSN (Online):1918-1825
Published Online:26 September 2016

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