Use of Ovaprim Hormone to Induce Ovulation and Hatching in Common Carp (Cyprinus carpio) Farmed in Syria

Abstract

This study represents the first investigation conducted in Syria to evaluate the effectiveness of the Ovaprim hormone in inducing hormonal ovulation and hatching in common carp Cyprinus carpio. The research was carried out from July 6 to July 10, 2024, at a private fish hatchery located in the Kazo area of Hama Governorate. The primary objectives of this study were to estimate the ovulation rate, fertilization rate, hatching rate, latency period, and absolute fecundity.

A total of six sexually mature females, weighing between 3200 and 3500 grams with an average weight of 3250 grams, and twelve males (two males per female) were used in the experiment. Females were injected with a single dose of 0.5 ml/kg of body weight of Ovaprim, while males received 0.25 ml/kg of body weight.

The latency period averaged 12 hours and 38 minutes under temperatures ranging from 25 to 27 °C, at which point all females were ready for spawning. The absolute fecundity averaged 298,868 eggs, and the ovulation rate reached 100%, while the average fertilization rate was 96.67%. The average hatching rate was 92.0%.