EAS Publisher | Control of Reproduction by Using Hormonal Injection in Grass Carp (Ctenopharyngodon Idella) Reared In the Floating Cages River Nile, Egypt

Control of Reproduction by Using Hormonal Injection in Grass Carp (Ctenopharyngodon Idella) Reared In the Floating Cages River Nile, Egypt

DOI : https://doi.org/10.36349/easjbg.2019.v01i06.002

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The experimental application of induced spawning on grass carp (Ctenopharyngodon idella) were carried out during the period of spawning extended from April to May 2016. The different doses level of human chorionic gonadotropin (HCG) and carp pituitary homogenate (CPH) were used separately or mixed together. The present results indicated that the best dose level that give higher number of fertilized and hatching eggs were 5mg/kg of body weight of CPH, following 9hours with 1500IU HCG per kg of body weight. No significance differences occurred (P> 0.05) in fertilized and hatching rates between HCG and CPH of treatment groups. In all experiment, the initial egg diameter before the initial injection was 600 micron in diameter. In mature stage, the ripe eggs were recorded to be more than 1 mm in diameters after injection with hormonal treatment.

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