A study of digestive enzymes in the hybrid between beluga and sturgeon, Huso huso x Acipenser ruthenus, during the postembryonic period

Timeiko, V.N.; Bondarenko, L.G.

Voprosy Ichtiologii 28(1): 117-123

1988


ISSN/ISBN: 0042-8752
Accession: 006525315

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Abstract
Data were presented on the dynamics of the activity of acid and alkaline proteinases, -amylase and leucine aminopeptidase, the main digestive enzymes in the postembryonic period. By the time the fish change to exogenous feeding, they have in their digestive tract enzymes that carry out cavitary acid digestion of protein in the stomach (acid proteinases) and membrane digestion in the intestine (leucine aminopeptidase). The activity of pancreatic enzymes (alkaline proteinases and .alpha.-amylases) was registered conspicuously only after the beginning of exogenous feeding.