Research Article: Effect of different milt extenders on sperm parameters, fertilization rate, embryo quality, and fry production traits in the African catfish (Clarias gariepinus)
Publish place: Iranian Journal of Fisheries Sciences، Vol: 22، Issue: 4
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JIFRO-22-4_009
تاریخ نمایه سازی: 9 آبان 1402
Abstract:
The fertility indices of the African catfish (Clarias gariepinus) milt diluted in different extenders were investigated using four adult males and two adult females. There were four groups with three replicates each, comprising an undiluted fresh milt group (FM; Control) and three groups of different milt extenders: soya beans milk (SM), citrated egg yolk (CEY), and citrated water (CW). Each extended milt group was diluted at a ۱:۱۰ ratio and stored at ۴ °C for ۴۸ h prior to spawning. After milt extension, the milt pH, sperm motility and viability, and sperm concentration were determined daily for ۷ days. The egg fertilization and hatchability rates, fry survival rate, embryo viability rate (at ۸ h and ۲۴ h), and fry gross biometry (۱۳ days post-spawning) were evaluated. The results showed no significant difference (p>۰.۰۵) in the diluted milt pH of the different groups. The sperm viability, motility, and concentration significantly decreased (p<۰.۰۵) in all groups, although the CEY group had the highest values (p<۰.۰۵) compared to SM and CW treatments. No fertilization was observed in SM treatment. It was concluded that as a milt extender for the African catfish, chilled CW was similar to CEY with respect to fertilization, hatchability, and fry survival rates, while a higher fry body weight was obtained in CW compared to CEY. On the other hand, the chilled SM extender stored for ۴۸ h was not suitable for producing fry due to unsuccessful fertilization.
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Authors
S.A. Ubah
University of Abuja, Nigeria
K.O. Abah
University of Abuja, Nigeria
A.M. Adetola
University of Abuja, Nigeria
O.A. Agbonu
University of Abuja, Nigeria
P.K. Columbus
University of Abuja, Nigeria
S.E. Abalaka
University of Abuja, Nigeria
C.E. Obudu
University of Abuja, Nigeria
C.F. Oguejiofor
University of Nigeria, Nsukka
E.C. Mbegbu
University of Nigeria, Nsukka
A.Y. Ribadu
University of Abuja, Nigeria
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