[Adaptation of intestinal disaccharidases to saccharose in the ontogeny of chicks].

In experiments of 1, 15 and 30-day chicks, studies have been made of adaptational changes in the activity of maltase and saccharase from different parts of the small intestine during feeding by sucrose. It was found that the increase in the activity of the mentioned enzymes during sucrose utilization takes place only in 30-day chicks. At earlier stages of ontogenesis, adaptational changes in the activity of disaccharidases are directed to the enhancement of the decrease in the activity of maltase and saccharase in the small intestine, this decrease being observed at these stages in control chicks.