Prolific ewes were supplemented with a molasses-based product from 90 d of pregnancy.
Glucose concentrations were high in the supplemented ewes.
β-hydroxybutyrate and non-esterified fatty acids were low in the supplemented ewes.
Hypoglycemia and hyperketonemia were much more frequent in the control ewes.
The minor effect on lambs suggesting the extra nutrients were prioritized to dams.