Hydrobiologia

, Volume 54, Issue 2, pp 129–134

Studies on the role of exogenous proteolytic enzymes in digestion processes in fish

  • Konrad Dabrowski
  • Jan Glogowski
Article

DOI: 10.1007/BF00034986

Cite this article as:
Dabrowski, K. & Glogowski, J. Hydrobiologia (1977) 54: 129. doi:10.1007/BF00034986

Abstract

Studies were carried out on the proteolytic activity of the fry of common carp, rainbow trout, grass carp, and whitefish, as well as on the activity of digestive organs of adult common carp and rainbow trout. Activity of exogenous enzymes in relation to endogenous ones was assessed on the basis of the proteolytic value of fish food and the activity of digestive organs. It was found that the share of proteolytic enzymes of natural food in the digestion process in fish was high. Beginning from a weight of 50–100 g for common carp and 10 g for rainbow trout, the relation between the daily enzymatic ration and the weight of fish indicates the cooperation of an approximately constant amount of exogenous enzymes.

Keywords

Proteolytic activityEnzymes of fish and fish food organisms

Copyright information

© Dr. W. Junk b.v. Publishers 1977

Authors and Affiliations

  • Konrad Dabrowski
    • 1
  • Jan Glogowski
    • 1
  1. 1.Institute of Ichthyobiology and Fisheries, Institute of Physiology and Animal BiochemistryAgricultural-Technical AcademyOlsztynPoland