Fig. 5

Activities of ALT (a), AST (b), LDH (c) in serum and of ALT (d), AST (e), LDH (f) in the liver of tilapia fed a commercial diet un-supplemented (control) or supplemented with 1% or 2%Arg. Values are means ± SEM, n = 3 tanks per group. Means without a common letter differ, P < 0.05. ALT, alanine aminotransferase; AST, aspartate aminotransferase; LDH, lactate dehydrogenase