Effect of Dietary Protein Sources in Microdiets on Feeding Behavior and Growth of Red Sea Bream,Pagrus major,During Weaning and Metamorphosis |
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| Abstract: | ABSTRACT The use of two protein sources, krill meal (protein 62% dry matter) and soybean protein (protein 85.2% dry matter), and their effect on growth performance and feeding behavior of red sea bream, Pagrus major, during weaning and metamorphosis, was studied using microbound diets. High levels of dietary soybean protein (25% of the diet) resulted in a poor feeding response and marked anorexia, resulting in high mortalities and poor growth. Moderate levels of dietary soybean protein (17-19% of diet) resulted in higher growth. Krill meal contributed to an increase in food consumption. A possible reason for the reduced growth of fish fed soybean protein-based diets was the lower palatability of these diets. Alternative sources of protein could replace fish meal, if these sources are more palatable to the fish. |
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| Keywords: | Vaccination vibriosis European sea bass Dicentrarchus labrax antibody titer growth |
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