Influence of dietary phosphorus levels on growth, metabolic response and body composition of juvenile silver perch (Bidyanus bidyanus).

摘要

The growth, metabolic response and body composition of silver perch (Bidyanus bidyanus), as affected by dietary phosphorous (P) level, was investigated. A dietary P level of 0.71% was found to be optimal for growth. Increasing dietary P from 0.24 to 0.72% reduced whole body and liver lipid and triacylglycerol contents and plasma alkaline phosphatase activity, and increased phosphatidylcholine and phosphatidylethanolamine levels, plasma inorganic P concn. and whole body and vertebrae ash, Ca, Mg and P contents. P deficiency was characterized by dark coloration, increased whole body and liver lipid contents, loss of appetite, poor bone mineralization, poor growth and reduced physical activity.