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The effect of dietary lysine levels on growth and metabolism of rainbow trout (Salmo gairdneri)

Published online by Cambridge University Press:  09 March 2007

M. J. Walton ,
C. B. Cowey  and
J. W. Adron
M. J. Walton
Affiliation:
NERC Institute of Marine Biochemistry, St Fittick's Road, Aberdeen ABl 3RA
C. B. Cowey
Affiliation:
NERC Institute of Marine Biochemistry, St Fittick's Road, Aberdeen ABl 3RA
J. W. Adron
Affiliation:
NERC Institute of Marine Biochemistry, St Fittick's Road, Aberdeen ABl 3RA
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Abstract

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1. Groups of rainbow trout (Salmo gairdneri; mean weight 5 g) were given diets containing 10, 12, 14, 17, 21, 24 and 26 g lysine/kg diet for 12 weeks.

2. By analysis of the growth values the dietary requirement of lysine in this experiment was found to be 19 g/kg diet. A similar requirement value was obtained from a dose-response curve of expired 14CO2 (following an intraperitoneal injection of L-[U-14C]lysine) v. dietary lysine concentration.

3. Liver concentrations of total lipid and carnitine and activities of lysine-α-ketoglutarate reductase (saccharopine dehydrogenase (NADP+, lysine-forming), EC 1. 5. 1. 8 ) in the liver were not significantly different in fish from the different dietary treatments. Hepatosomatic index, however, was higher in those fish given low levels of dietary lysine.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 52 , Issue 1 , July 1984 , pp. 115 - 122
Copyright
Copyright © The Nutrition Society 1984

References

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