BROODSTOCK MANAGEMENT AND CARE IN FISH FARMING

    BROODSTOCK CARE AND SELECTION OF BREEDERS

          In most cases broodstock selected from nature or bought at a fish farm are kept in earthen ponds at a stocking density of 0.5-1/m² and fed regularly with agricultural waste products and sometimes with some trash fish. Egg development will take place and about six weeks after a female has been reproduced it can be used again.
 In some area of Africa the water temperatures drops below 22⁰c during the dry/winter season, which hampers egg development and artificial production.

TYPES OF HOMONES USED IN INDUCING FEMALE CATFISH

TYPES OF HORMONES USED IN INDUCING REPRODUCTION

For hormone induced reproduction (semi artificial or artificial) the following hormones are generally used;

v DOCA (Desoxycorticosteroid Acetate), 2.5-5 mg per 100 gram of female. A disadvantage of using this hormone is that it is mostly suspended in oil which causes severe ulcers on the injected female.