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The Effects of Glucose, Fructose, and Galactose on the Respiratory Exchange of the Goat¹

University of New Hampshire, Durham, New Hampshire, and Nutrition Laboratory, Carnegie Institution of Washington, Boston, Massachusetts

The respiratory exchanges of four male and five female adult goats were determined 40 hours after withdrawal from food (1) under basal conditions and (2) in eight successive -hour periods after the administration by stomach tube of 250 ml. of water at 37°–38°C., or of 25 gm. of glucose, fructose, or galactose dissolved in 125 ml. of water and an additional 125 ml. of water for rinsing.

Water produced a slight but somewhat delayed increase in the R. Q. Fructose caused the greatest increase in the R. Q. and the greatest increase in the metabolism of carbohydrates. Glucose was next in these effects, and galactose had the least effects. Qualitatively these results resemble much those found with man with these sugars. There was evidence of a slight amount of fermentation after the ingestion of galactose and of fructose by the goats.

Manuscript received 8 March 1944.