Animals—7 dogs with well-regulated naturally occurring
insulin-dependent diabetes mellitus.
Procedure—Dogs were fed 1 of 3 diets for 1 month
each in 1 of 6 randomized diet sequences. Diets
included a low-fiber diet (LF) and 2 high-fiber diets; 1
contained only insoluble fiber (HIF), and 1 contained
soluble fiber in addition to insoluble fiber (HSF).
Caloric intake was unchanged throughout the study.
Glycemic control was assessed after each feeding
trial by measuring serum fructosamine concentration
and performing 5 serial measurements of blood glucose
concentration every 2 hours after the morning
feeding and insulin injection.
Results—Significant differences were not detected in
body weight, required insulin dosage, or albumin concentration
among dogs fed the HIF, HSF, and LF diets.
Mean and maximum blood glucose concentrations
and area under the blood glucose curve were significantly
lower in dogs fed the HIF diet, compared with
values in the same dogs fed the HSF or LF diet.
Fructosamine concentration was significantly lower in
dogs fed the HIF or HSF diet, compared with values
in the same dogs fed the LF diet.
Conclusions and Clinical Relevance—In dogs with
naturally occurring insulin-dependent diabetes mellitus,
a dry, high insoluble-fiber diet may aid in glycemic
control. (J Am Vet Med Assoc 2000;216:1076–1081)