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Resting energy expenditure and body composition of Labrador Retrievers fed high fat and low fat diets
Author(s) -
Yoo S.,
Ramsey J. J.,
Havel P. J.,
Jones P. G.,
Fascetti A. J.
Publication year - 2006
Publication title -
journal of animal physiology and animal nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.651
H-Index - 56
eISSN - 1439-0396
pISSN - 0931-2439
DOI - 10.1111/j.1439-0396.2005.00588.x
Subject(s) - resting energy expenditure , zoology , composition (language) , chemistry , fat mass , calorimetry , energy expenditure , obesity , endocrinology , medicine , biology , linguistics , philosophy , physics , thermodynamics
Summary A high dietary fat intake may be an important environmental factor leading to obesity in some animals. The mechanism could be either an increase in caloric intake and/or a decrease in energy expenditure. To test the hypothesis that high fat diets result in decreased resting energy expenditure (REE), we measured REE using indirect calorimetry in 10‐adult intact male Labrador Retrievers, eating weight‐maintenance high‐fat (HF, 41% energy, average daily intake: 8018 ± 1247 kJ/day, mean ± SD) and low‐fat (LF, 14% energy, average daily intake: 7331 ± 771 kJ/day) diets for a 30‐day period. At the end of each dietary treatment, body composition measurements were performed using dual‐energy X‐ray absorptiometry. The mean ± SD REE was not different between diets (4940 ± 361 vs. 4861 ± 413 kJ/day on HF and LF diets respectively). Measurements of fat‐free mass (FFM) and fat mass (FM) also did not differ between diets (FFM: 26.8 ± 2.3 kg vs. 26.3 ± 2.5 kg; FM: 3.0 ± 2.3 vs. 3.1 ± 1.5 kg on HF and LF diets respectively). In summary, using a whole body calorimeter, we found no evidence of a decrease in REE or a change in body composition on a HF diet compared with LF diet.