Breeding performance...........
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Amrit Campus
Abstract
The study of breeding performance and rearing of Catla catla was done in Pure Line
Fish Breed Conservation and Promotion Resource Centre, Rupendehi, Nepal from July
to November 2020. Fishes were spawned successfully following a single dose of
ovaprim with 0.5ml/kg for female and 0.25ml/kg for male. The spawning behaviour
was observed after 8 hours of hormone treatment at temperature ranges from 29-31°C.
The hatching occurred after 13 hours of fertilization. The experiment was conducted in
three replicas of 1×1×1m3
hapa. The fecundity was 142,400 to 324,800 while Gonado
somatic index was 5.12-8.88%. The fertilization, hatching and survival rate were
77.78%, 65.25% and 44.1% respectively. The pH ranges from 7.6 to 9.8, dissolved
oxygen 5.0mg/lt to 8.6 mg/lt and temperature 25.8-37.1°C. The water quality
parameters were suitable for breeding and rearing of Catla catla and the ideal weight
of female was found 4.5 kg.