Impact of a Synthetic Androgen on Milt Quality and Semen Preservation of Gilthead Seabream, Sparus aurata (Carl Linnaeus, 1758)

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Chithambaran Sambhu; Al Harbi Mamadouh Ali

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Journal Paper

Paper Information

Journal: Iranian Journal of Biotechnology Year:621 | Volume: | Issue: Page(s): 109-113

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Title

Impact of a Synthetic Androgen on Milt Quality and Semen Preservation of Gilthead Seabream, Sparus aurata (Carl Linnaeus, 1758)

Author(s)

Chithambaran Sambhu | Al Harbi Mamadouh Ali | Issue Writer Certificate

Keywords

Keywords: Milt quality

Preservation

Seabream

Testosterone Propionate

Abstract

Background: The use of synthetic hormones, particularly androgens, for induced breeding of fish has been a long-standing trend to improve the milt quality of male fish.Objectives: To evaluate the impact of Testosterone Propionate (TP) on the milt quality and short-term Preservation of Gilthead Seabream semen at 4oC in oxygen and Fish Ringer’s medium.Materials and Methods: Mature male fishes were given intra-muscular injection of TP at a dose of 1.0 ml/ Kg. After 36 hours, milt was assessed for sperm motility, density, sperm viability and colour. Semen preserved at 4 oC in oxygen and Fish Ringer’s medium was examined for sperm motility (%), motility duration (sec) and viability (%) at 24,48,72,96 and 120 h. Results: Significant change in colour or pH of the milt was not observed. Milt’s consistency changed from being thick to more watery. The hormone-injected fish had an increased level of milt volume and sperm density than the control. Milt stored in an oxygen atmosphere showed higher sperm cell quality than that stored in Fish Ringer’s medium.Conclusion: TP injection at 1.0 ml/ Kg enhances sperm concentration, motility and viability of Gilthead Seabream, S.aurata.

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