Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Aurelia NICA, Mihai-Stefan PETREA, Alina MOGODAN, Ira-Adeline SIMIONOV, Victor CRISTEA
The present research aims to investigate the effects of using carp pituitary extract on spawning performance parameters of koi carp. The experiment was performed during the breeding season (may, 2020). The stimulation of koi carp sexual maturation was performed by injecting the breeders with carp pituitary suspension, at a water temperature of 22oC. A single injection with carp hypophysis, 3 mg/kg body weight (BW) for female and 2 mg/kg BW for male, was used for spawning induction, thus, resulting a successful ovulation. The eggs treatment was performed by applying 5.8 ml malachite green/100 liters of water. The following developmental stages of koi carp were observed and characterized: embryonic, hatchling, larval, post larval, fry and fingerling. The recorded prolificacy was 7460 eggs/kg female BW, considering that the koi carp female was at the 3rd deposit during the year 2020. The hatching started 72 hours after fertilization. Results of the current study indicate the successful induction of koi carp spawning by using carp pituitary extract.
[Read full article] [Citation]
