Impact of the Initial Body Weight (Stocking Density) and Daily Feeding Rate in Performance of Nile Tilapia and (Oreochromisniloticus) and Thin-Lipped Mullet (Mugilcapito) Under Mono-Culture System

Two mono-culture experiments were under taken on mono-sex all males Nile tilapia (Oreochromisniloticus) and thin-lipped mullet (Mugilcapito/Liza ramada, Bouritobara, Tobara) in eighteen (nine / fish species, three initial weights x three feeding levels) Hapas stocked in an earthen pond for five months. Fish fed a commercial diet (30% crude protein). The obtained results revealed that both variables (initial body weight and feeding rate) affected all criteria measured including feed and nutrients utilization, growth performance, chemical composition and the cost of food required to produce one Kg body gain.

Keywords: Bolty, Tobara, initial weight, feeding rate, performance, feed utilization, fish composition.