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Genetic differences in digestion and absorption of dietary protein in Atlantic salmon, Salmo salar L., with different trypsin isozyme patterns
Author(s) -
TORRISSEN K. R.,
LIED E.,
EPSE M.
Publication year - 1994
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1994.tb00676.x
Subject(s) - salmo , biology , postprandial , isozyme , trypsin , digestion (alchemy) , lysine , amino acid , biochemistry , food science , enzyme , fish <actinopterygii> , fishery , endocrinology , chemistry , chromatography , insulin
. In the genetical presence of trypsin isozyme TRP ‐2(92), Atlantic salmon, Salmo salar L., of either 100g or 400g in weight showed similarity in significantly higher absorption of the dietary protein as their postprandial total free amino acids in the plasma were significantly higher than those in the salmon without the isozyme. Better digestion of the dietary protein was observed by the presence of significantly higher postprandial plasma lysine level of the TRP‐2(92) salmon. Another indication of different protein metabolism between salmon with and without the isozyme was observed by differences in plasma alanine and hydroxyproline. Trypsin activity in the intestine showed a higher response to feeding than that in the pyloric