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Abstract

Reproductive morphometry of Clarias gariepinus (C. gariepinus) is essential in distinguishing different species that are closely related to it and adequate information is required regarding the seasonal variation of milt characteristic of wild species. This study was designed to document the reproductive tract morphometric dimensions and milt characteristics of wild C. gariepinus during spawning and non-spawning seasons in Lake Alau, Maiduguri, Nigeria. Sixty male brood stocks were used comprising thirty each for spawning and non-spawning seasons. The reproductive tracts were removed and their dimensions measured. The milt samples were collected, pooled and evaluated. Results of the study showed that the body weight, sperm concentration and testicular indices differed significantly (p˂0.05) between the two seasons of evaluation. In addition, a positive correlation (p˂ 0.05) between body weight of fish and milt volume (r = 0.656 and r = 0.646) was also observed in both seasons. It was concluded that the left testis of C. gariepinus is heavier, longer and thicker than the right. Nonetheless, the C. gariepinus had larger body weights and higher spermatozoa concentration in spawning season than in non-spawning season; those with larger body weights had higher volume of milt than those with lower body weights.

Keywords

Clarias gariepinus; Lake Alau; Morphometry; Milt; Non-spawning; Spawning

Article Details

Author Biography

R. I. Ali, Department of Theriogenology, Faculty of Veterinary Medicine, University of Maiduguri

Dr. Rahmatu I. Ali is the corresponding author of this manuscript and an academic staff (Lecturer II) in the Department of Theriogenology, Faculty of Veterinary Medicine, University of Maiduguri

How to Cite
Reproductive Tract Morphometry and Evaluation of Fresh Wild African ‎Catfish (Clarias gariepinus) Milt from Lake Alau, Maiduguri, Nigeria‎. (2022). Sahel Journal of Veterinary Sciences, 19(3), 1-7. https://doi.org/10.54058/saheljvs.v19i3.312
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How to Cite

Reproductive Tract Morphometry and Evaluation of Fresh Wild African ‎Catfish (Clarias gariepinus) Milt from Lake Alau, Maiduguri, Nigeria‎. (2022). Sahel Journal of Veterinary Sciences, 19(3), 1-7. https://doi.org/10.54058/saheljvs.v19i3.312

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