الفهرس 
Classification and geographical distributionOnly 14 pages are availabe for public view
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Abstract
It is known in Egypt that tilapia species are among the first class edible fish that have a great demand from the Egyptian consumers. Tilapia species attracted the attention of fish farmers all over the world especially in the tropical and subtropical countries. The present study dealt with Taiwanese red tilapia fingerlings to determine the best requirements for its rearing in net enclosures in Egypt. Seven experiments were carried out in the following manner: 8.1. The first experiment: This experiment was conducted to evaluate the effect of different protein sources on growth and survival rate of fingerlings. Four diets were formulated containing different protein source in each. These source were fish meal, meat meal, soybean meal and mixture of them together (standard diet). This experiment indicated that: The diet contained soybean meal had the highest content of crude protein that was higher than that estimated in the other used diets. The diet contained soybean meal as a main source of protein increased significantly the contents of protein, lipids and carbohydrates in the flesh of the estimated fingerlings. The highest individual total and daily gain in weight was obtained by soybean diet that followed by that obtained by the standard diet. 8.2. The second experiment: This experiment evaluated the effect of different experimental feeding rationing levels on the growth and survival rate of the studied fingerlings. Three feeding levels (5, 7.5 and 10% of total body weight) were used. The following results were obtained: The feeding level 5% obtained the highest protein content in the flesh of fingerlings. The used feeding level affected the gain and growth performance insignificantly possessing the highest values by the level of 10%. This highest value of growth rates was associated with very high rats of food consumption in comparison with that obtained by the feeding level of 5%. 8.3. The third experiment: This experiment dealt with the effect of different feeding times on growth and survival rate of fingerlings. Two and three feeding times were used. The obtained results were in the following manner: Protein, lipids and carbohydrates levels in the flesh of fingerlings affected insignificantly by the applied feeding times with the presence of highest level of protein in the flesh of fingerlings fed three times a day. The yield and growth performances were affected significantly by the estimated feeding levels possessing its highest values with the level of two times a day. 8.4. The fourth experiment: This experiment evaluated the effect of different experimental feeding method on the growth and survival rate of fingerlings. Three (automatic, demand and manual) different feeding methods were used and the following results were obtained: Final total lengths, weights specific growth rate and survival rate values were affected significantly by the applied different feeding methods. The highest values were obtained by demand feeding followed by that obtained by automatic and manual feeding.