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:: Volume 3, Issue 2 (11-2023) ::
injoere 2023, 3(2): 99-108 Back to browse issues page
Comparative Study of Hormonal Stimulation of HCG, PG-extract and Ovaprim on Thermal Accumulation Period and Egg Production in Grass Carp Ctenopharyngodon idella
N.A. Salman * , S.S. Al-Noor , K.A. Khalaf
Abstract:   (709 Views)
Three types of hormonal stimulation were tried using HCG, PG extract and Ovaprim to induce egg production and accelerate thermal accumulation period (TAP). Results showed that there is a direct relationship between the type of hormones and TAP. Fish receiving PG-extract had the shortest TAP which was significantly different than those receiving HCG and Ovaprim treatments. Values ranged between 258.97, 344.67 and 322.78 (C ْ-hour) in fish injected with PG extract, HCG and Ovaprim respectively. Results also showed noticeable variation in egg production in fish receiving various hormones with clear superiority for fish injected with PG-extract compared with those receiving HCG and Ovaprim. The lowest weight of extracted eggs (7.3 g/kg) was in fish injected with HCG and the highest (139.7 g/kg) in fish receiving the PG hormonal extract.