Short Communication: Regulation of Milk Fat Yield and Fatty Acid Composition by Insulin

Effects of the hyperinsulinemic–euglycemic clamp on milk fatty acid yield (mmol/d). Fatty acids are grouped by origin: Fatty acids <16 carbons are derived from de novo synthesis, fatty acids >16 carbons are derived from the uptake of preformed fatty acids, and fatty acids with 16 carbons are derived equally from both sources. Values are means±SEM.

Change in milk fatty acid yield (mmol/d) during administration of the hyperinsulinemic–euglycemic clamp as compared with the baseline period. Fatty acids are grouped by origin: Fatty acids <16 carbons are derived from de novo synthesis, fatty acids >16 carbons are derived from the uptake of preformed fatty acids, and fatty acids with 16 carbons are derived equally from both sources.