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A study was conducted to determine the effect of age of catfish (Clarias gariepinus) broodstock on quantity of eggs and milt produced and subsequent growth of fry. Six ponds were used to stocked with different ages of male and female broodstock which varied from 12 to 30 months. A completely randomized design (CRD) was used. A total of thirty six male and female broodstock each were used. There were four replicates per treatment. Spawning was induced by the use of ovaprim ® injection. The eggs were fertilized with milt collected from the male broodstock. The quantities of eggs and milt produced, eggs hatched and raised to fry stage were monitored. A proximate analysis of the feed indicated that Artemia contained 55.27% crud protein and 27. 12% Nitrogen Free Extract, while Dizengoff had 57.06 crude protein and 12.61% Nitrogen Free Extract. The content of crude fibre was 4.01 and 0.90% for Artemia and Dizengoff repectively. Result showed that age of female catfish broodstock positively affected the number of eggs produced with 24 and 30 months old broodstock producing 260 and 300g of eggs respectively, while 15 and 18 months old had 150 and 160g of eggs respectively. Hatchability also increased with age of broodstock. The older the female, the higher the egg hatchability. Fry obtained from 24 and 30 months old broodstock had a significantly (p<0.05) higher weight (18g and 24g) at four weeks of age compared to fry obtained from 15 and 18 months old female broodstock which weighed 8.33g and 10.00g respectively. In order to obtain good egg number, high hatchability and optimum performance of the fry it is recommended that broodstock should be at least 24 months of age before being used for breeding.

Effect of Age of Spawned Catfish (Clarias Gariepinus) Broodstock on Quantity of Eggs and Milt Produced and Growth Performance of Fry