Table 17. Dietary nutritional
deficiency, essential amino acid (EAA) and essential fatty acid (EFA) |
|
|
|
EAA/EFA |
Deficiency signs/syndrome |
|
|
|
Essential amino acid |
|
|
|
|
Lysine |
Mortality of fry |
|
|
|
Typtophan |
No gross morphological change in fry |
|
|
|
Essential fatty acid |
|
|
|
|
n-3 & n-6 |
Poor survival and growth of larva; poor reproductive
performance in broodstock |
|
|
|
|
|
|
|
|
Data source: ICAR (2006); Ravi and Devraj (1991) |
|
|
|
Minerals |
Deficiency signs/syndrome |
|
|
|
Phosphorus |
Increase in the activity of certain gluconeogenic enzymes
in liver� |
|
|
|
Magnesium |
Hypercalcinosis of kidney & hepatopancreas |
|
|
|
Iron |
Microcytic anemia, normal colour of liver changes to
yellowish-white |
|
|
|
Copper |
Reduced growth, cataract |
|
|
|
Mineral deficiency signs as
reported above are of other fish species, not necessarily specific to catla |
|
|
|
|
|
|
|
|
|
|
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|
|