Abstract:
Three feeds were formulated using low cost raw materials with protein
contents ranging from 44% - 62% and prepared in the laboratory and were
tested against an imported feed (protein 32%) on young stages (initial weight,
0.03 - 0.71 g.) of four species of ornamental fish namely, Rosy Barb (Barbas
conchoniusy, Angel (Pterophyllum scalurey; Gold fish (Carassius auratus auratus)
and Goggle - eye iCarassius sp.) over a period of 2 months to assess the
feasibility of using locally prepared feeds in rearing of very young stages in
ornamental fish culture.
High Assimilation Efficiencies (56 - 82 ~~), low Food Conversion Ratios
(less thae 2), high Growth Rates (0.005) - 0.02 g. day") and high Survival
Rates (93% - 100) shown by all species on the prepared diets proved the
locally prepared feeds to be highly acceptable.
The results also reveal that there is an optimal level of dietary protein
requirement in the range of 44 - 50% for three of the four species studied.
The study also showed that the cost of feeds can be reduced by
(a) using low cost protein sources such as shrimp heads, fish/meat
offals, rice bran and soya flour;
(b) using more carbohydrates with less protein.
