Studies on induce breeding performance of magur (Clarias batrachus) in FRP hatchery installed at Nalbari district, Assam

Abstract

A study was conducted to evaluate the effect of Ovaprim on induced breeding of Magur (Clarias batrachus) in FRP hatcheries H-1, H-2 and H-3 installed in three farms of Nalbari district, Assam for survival of magur larvae. The Ovaprim hormone was found to be efficient in breeding operations of the hatcheries in dose combinations as 1.35±0.15, 1.95±0.15 and 1.16±0.17 used in H-1, H-2 and H-3 respectively. It was obvious that the average relative fecundity, body weight and ovulation percentage in H-2 hatchery were higher compared to H-1 and H-3 which is mainly due to proper feeding and nutrition. The highest % normal larvae was observed in H2 hatchery which was 67.72±13.01 which is due to the effect of different doses of Ovaprim during induced breeding of Magur. The study revealed that FRP hatcheries can be a potential tool for induced breeding and quality seed production of Magur.

Artificial propagation of Asian catfish, Clarias batrachus (Linnaeus, 1758) in Asia: A review

“…The broodstock of magur, 150 g body weight, were used for breeding. Farmers maintained ideal sex ratio 1:2 (male and female) for higher rate of fertilization although sometimes it depends on the release of egg (Rajbongshi et al, 2020). Khan et al (2021) mentioned that magur fishes were cultured at a stocking density of 100 fish decimal -1 in the earthen ponds of the hatchery for broodstock development.…”

“…So induced spawning is always advisable for getting optimum quantity and quality of the stocking material. Bangladesh is one of the world's leading fish producing country with a total production of 4.621 million MT in 2020(FAO, 2021.…”