Quantitative dietary lysine requirement of Atlantic ...

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Title Quantitative dietary lysine requirement of Atlantic salmon (Salmo salar) fingerlings
Author(s) J. S. Anderson, S. P. Lall, D. M. Anderson, Mary A. McNiven
Journal Canadian Journal of Fisheries and Aquatic Sciences
Date 1993
Volume 50
Issue 2
Start page 316
End page 322
Abstract Triplicate groups of Atlantic salmon (Salmo salar) fingerlings, about 4.7+or-0.2 g, were fed to appetite on diets containing 1.24, 1.76, 1.90, 2.19, 2.45, 2.68 and 2.94% lysine and gross energy 24.1 MJ/kg of diet (DM basis, DMB) for 70 days. The salmon were reared in water salinity 10 ppt at 15 degrees +or-0.9 degrees C with 12-h photoperiod. The dietary requirement for lysine, estimated by broken-line regression of growth against dietary lysine (DBM), was 1.99+or-0.11%, or 3.98% of the protein when protein was 50.0% of the diet. A dietary lysine requirement of 1.84+or-0.16 to (DMB) was estimated from broken-line regression of expired 14CO2 (following an intraperitoneal injection of L[U-14C]lysine) against dietary lysine concentration. Except for loss of appetite, resulting in low feed intake and decreased growth, no nutritional deficiency signs were seen in fish fed on a lysine-deficient diet for 140 days..

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