Abstract
The efficacy of the synthetic reproductive hormone WOVA-FH was evaluated for the ovulatory performance and egg quality of Clarias batrachus at three different doses, viz. 0.5, 1.0 and 1.5 ml/kg of body weight of brooder fish. After a 16-h latency period, both males and females of Clarias batrachus were simultaneously taken in a ratio 1:1 for milt collection and stripping. Ovulatory performance parameters such as stripped egg quantity, spawning fecundity and fertilisation rate were the highest (p < 0.05) at 1 ml/kg dose treatment followed by treatment with 1.5 and 0.5 ml/kg WOVA-FH doses. The stripping of females was easy and egg flowing was free when fish were treated with the hormone dose of 1 ml/kg. Fish treatment with the hormone dose of 0.5 ml/kg resulted in the lowest stripped egg yield and difficult stripping. At 1.5 ml/kg and higher hormone doses, unovulated eggs were observed and stripping of female fish required higher pressure. As a consequence, eggs were tinged with blood and clumped. Good qual...
Published Version
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