Use of some microbial biomass as growth Promoters for oreochromis niloticus fingerlings Diets. [electronic resource].

Includes references.

The aim of the present study evaluate the effects of three types of feed additives, two blue green algaee strains (Spirulina sp. and Spirulina pacifica) and one yeast strain(Saccharomyces cerevisae) on growth performance in Nile tilapia fingerlings. Four diets were formulated to be isocaloric and isonitrogenous containing (about 4616 kcallkg DM) and (about 31.49% CP) for tilapia fingerlings: one a control diet without supplements; a second supplemented with 1% Spirulina sp.; a third supplemented with 1% Spirulina pacifica and a fourth, supplemented with 1% Saccharomyces cerevisae. A total number of120 Nile tilapia fingerlings with average initial body weight of 7.08±O.08 g/fish were randomly distributed into four treatment groups and stocked into 12 glass aquaria (70 liter each). The tilapia fingerlings were fed for 12 weeks with the fourth diets. Results indicate that the fingerlings fed with diets with feed additives at level 1% exhibited greater growth than those fed with the control diet.

Summary in Arabic.

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