Skip to main content
SLU:s publikationsdatabas (SLUpub)

Sammanfattning

Chitinolytic activity, nutrient uptake and intestinal barrier functions were investigated in gut tissues of Arctic charr (Salvelinus alpinus) fed iso-nitrogenous diets based on fish meal, with or without inclusion of zygomycetes (Rhizopus oryzae). We found that gut tissue of Arctic charr had significant chitinase activity, of both endo- and exo-chitinase iso-forms. Moreover, the distribution pattern along the GI tract of Arctic charr differed between endo-chitinase and exo-chitinase. The endo-chitinase activity in stomach tissue and in the distal intestine was several hundred-fold higher than the exo-chitinase activity in stomach tissue. The greatest exo-chitinase activity was found in the distal intestine. The zygomycete-based diet resulted in higher chitinolytic activity in gut tissue compared to the fish meal-based diet. Disturbed intestinal integrity and increased uptake rate of the amino acid lysine were observed in the distal, but not proximal, intestine of fish fed the zygomycete-based feed. (C) 2014 Elsevier Inc All rights reserved.

Nyckelord

Chitin; Zygomycetes; Intestinal barrier functions; Amino acid absorption; Plasma cortisol

Publicerad i

Comparative Biochemistry and Physiology - Part B: Biochemistry and Molecular Biology
2014, volym: 175, sidor: 1-8
Utgivare: ELSEVIER SCIENCE INC

SLU författare

UKÄ forskningsämne

Fisk- och akvakulturforskning

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.cbpb.2014.06.003

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/61019