14 C Studies on Ketogenicity of Metabolites in Lactating Dairy Cows. †

Abstract

Summary

The relative transfer of carbon-14 from propionate-2-¹⁴ C, carbonate-¹⁴ C. glucose-1-¹⁴ C. glycine-1-¹⁴ C. butyrate-2-¹⁴ C. and norvaline-3-¹⁴ C into the 2, 3, 4 carbon atoms of urinary B-hydroxybutyric and acetoacetic acid, and acetone has been determined. Carbon-14 atoms of norvaline-3¹⁴ C and butyrate-2-¹⁴ C were more ketogenic than those present in the other compounds investigated.