Table 11. Dietary nutritional deficiency, essential amino acid
(EAA) and fatty acid (EFA) |
EAA/EFA |
Deficiency signs/syndrome |
Measure |
Lysine |
Slow growth, high feed conversion ratio, fin erosion |
Add lysine supplement or use feed ingredient ingredients
of fish and animal origin |
Methionine |
Slow growth, high feed conversion ratio |
Add methionine supplement � |
Typtophan |
Slow growth, high feed conversion ratio |
Use fish meal and fishery by-products in feed formulation |
Histidine |
Slow growth, high feed conversion ratio, Cataracts in
smolts |
Use blood meal in feed formulation |
Essential fatty acid |
Slow growth, fatty liver, increased
mortality � |
Add 6�8 % marine fish oil to prevent deficiency in
practical diet |
Source: NRC (1993) |
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