50 P. Razdan et al. Fi g u r e 1 . Plasma insulin (means ± SEM) before and after time 0 = start of treatment. Fi g u r e 2 . Serum levels of free fatty acids (means ± SEM) before and after time 0 = start of treatment. Fi g u r e 3 . Serum levels of glucose (means ± SEM) before and after time 0 = start of treatment. Acta vet. scand. vol. 42 no. 1, 2001