At. Borne et al., DIFFERENTIAL METABOLIC EFFECTS OF ENERGY RESTRICTION IN DOGS USING DIETS VARYING IN FAT AND FIBER CONTENT, Obesity research, 4(4), 1996, pp. 337-345
The role of dietary fat and fiber in energy restriction for the manage
ment of obesity was examined, Twelve male castrated dogs were energy r
estricted for 7 weeks by feeding 60% of their calculated maintenance e
nergy requirements (MER = 1500 kcal/m(2)/d) for ideal body weight, Six
dogs were restricted on a high-fat (35.4 kcal% from fat), low-fiber (
2.9% dry matter basis [DMB]) diet while the other six dogs were restri
cted on a low-fat (24.5 +/- kcal% from fat), high-fiber (27% DMB) diet
, Compared with the high-fat, low-fiber diet, energy restriction on th
e low-fat, high-fiber diet resulted in significantly greater decreases
in body fat (1472 +/- 166 vs, 853 +/- 176 g; p < 0.05) and total seru
m cholesterol concentrations (108.7 +/- 11.3 vs. 51.5 +/- 13.9 mg/dL;
p<0.005), Reductions in body weight (286 +/- 0.3 vs. 2.14 +/- 0.3 kg;
p<0.09), and mean arterial blood pressure (17.4 +/- 6.1 vs. 6.7 +/- 2.
9 mmHg; p<0.12) were also greater on the low-fat diet; however, these
diet effects did not reach statistical significance, These data sugges
t that the fat and fiber content of the diet during energy restriction
are important factors in the management of obesity.