VPP 322: Aquatic Animal Diseases, Health Care and Management (1+1)

BROOD STOCK REARING FOR INDUCED BREEDING 

• An adequate stock of brood fishes has to be built up and reared into prime mature condition for the success in induced breeding or hypophysation. The age of the fishes must be above one year, but preferably 2–3 years old, since in India, the Indian major carps and Chinese carps are generally found to mature when they are about 2 years old. The ponds are suitably treated initially with lime, organic manures and inorganic fertilizers periodically depending upon the nutrient level of the ponds.
• The fishes may be provided with supplementary feed consisting of groundnut oil cake and rice polish (1:1 by weight) and the quantity of feed given daily may be 1–3% of the body weight of the fishes. Pumping out the water and then adding freshwater into the ponds are desirable since this is conducive for breeding.