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In vitro protein digestion, and growth of Atlantic salmon with different trypsin isozymes
Bassompierre, M.; Ostenfeld, T.H.; McLean, E.; Rungruangsak Torrissen, K. (1997). In vitro protein digestion, and growth of Atlantic salmon with different trypsin isozymes, in: Bassompierre, M. In vitro protein digestion in fish. pp. 59-69
In: Bassompierre, M. (1997). In vitro protein digestion in fish. PhD Thesis. Aalborg University: Aalborg. 126 pp., more

Also published as
  • Bassompierre, M.; Ostenfeld, T.H.; McLean, E.; Rungruangsak Torrissen, K. (1998). In vitro protein digestion, and growth of Atlantic salmon with different trypsin isozymes. Aquacult. Int. 6: 47-56, more

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Keywords
    Conversion factors; Digestion; Enzymes; Feed efficiency; Growth curves; Phenotypic variations; Proteins; Selective breeding; Salmo salar Linnaeus, 1758 [WoRMS]

Authors  Top 
  • Bassompierre, M.
  • Ostenfeld, T.H.
  • McLean, E.
  • Rungruangsak Torrissen, K.

Abstract
    Growth and in vitro digestion was examined in three iso-trypsin phenotypes (patterns 1, 2 and 2') of Atlantic salmon, Salmo salar. Fish grew equally well during the 128 day experiment irrespective of phenotype. At day 64 and 91, weight-specific growth rate of 2' phenotype animals were significantly lower (p < 0.05). At the end of the experiment, significant differences (p < 0.05) were noted between groups with respect to size. An in vitro method was used to examine protein digestion by the different trypsin phenotypes. Three fish meals (FM I > FM II > FM III) of high, medium and low quality, as defined by chemical analyses, were used. Phenotype 1 was able to differentiate between three fish meals ranking FM I > FM II > FM III. In contrast, phenotypes 2 and 2' were not able to separate between meals. In vitro digestion efficiency was dependent upon the three salmon types, ranking phenotype 2 > 1 = 2'.

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