ACIDIFIED SUBSTANCES AS GROWTH PROMOTERS FOR THE FRESHWATER PRAWN, MACROBRACHIUM ROSENBERGII AND THE NILE TILAPIA, OREOCHROMIS NILOTICUS

Abstract

In Egypt, aquaculture is an increasingly important option in animal protein production. Recently, attention has been focused on aquaculture systems, since it has a great potential for achieving other sources of fish production. The Nile tilapia Oreochromis nilolicus, is the most widely cultured tilapia in the world, in particular is accepted to Egyptian consumers. While, the giant freshwater prawn, Macrobrachium rosenbergii, its culture has expanded rapidly not only within Asia but also in regions far remote from the natural distribution of the species. Acidifiers consist of organic acids and salts, they have been used for more than 30 years to reduce bacterial growth and mould in feed stuffs and thus preserve hygienic quality. Nowadays, it is adding to food of human and many animals.