Racing dogs are often fed raw meat, which may become
oxidized. Few studies have examined the effect of feeding
oxidized food. This study was originally designed to determine
the effect of different concentrations of dietary fat on
Greyhound performance. After the experiment had been completed,
it was discovered that the peroxide values of both diets were
elevated, indicating that fat oxidation had been present.
The study compared performance and blood parameters in eight
trained Greyhounds fed either a high fat moderately oxidized
(HFMO) diet or a medium fat highly oxidized (MFHO) diet for
eight weeks. Dogs were raced over 500 m twice weekly. Dogs fed
the MFHO food ran 0.04 m/s slower (p = 0.06) and serum alkaline
phosphatase concentrations were higher (149 vs. 56 U/L; p <
0.0001) than in dogs fed the HFMO diet. Further evaluation is
needed to determine whether lower dietary fat or increased
oxidation was responsible for the altered performance, but
oxidation of the food should be considered as one possible
explanation for an increase in serum alkaline phosphatase
during a diet trial.
Increasing evidence implicates oxidative damage in the
progression and complications of human diabetics. This study
assessed antioxidant status and oxidative stress in cats with
diabetes mellitus (DM, n = 10) and a control group (n =
Alpha tocopherol was increased and gamma tocopherol was
decreased in diabetic vs. control cats. Fructosamine was
greater in diabetic vs. control cats. Antioxidant
status/oxidative stress was not associated with glycaemic
control in diabetic cats.
Despite strong association of DM with oxidative stress in
humans, this simple relationship is not found in diabetic cats.
They have both increased and decreased parameters of systemic
oxidative stress compared with control cats. This may be due to
higher levels of antioxidants in feline therapeutic diets, the
relatively short duration of disease in cats or other
The purpose was to investigate the feasibility of performing
an epidemiological analysis of dietary patterns and health of
dogs living in community households. The study included 50
humans and their canine companions. Questionnaires administered
to the 50 participants included questions on demographics,
activity, diet recall, food frequency and general health.
Three-day food recalls were validated against food frequency
The results revealed 24% of canines enrolled were diagnosed
as obese by their veterinarians, which was consistent with
self-reported weight status, where 11 subjects reported an
overweight dog (22%). Of the 50 respondents, 38 stated their
companion animals were at an ideal weight (76%) and one stated
the companion animal was slightly underweight (2%). The
majority of companion animals were standard to large size
(32%). The average age of the dogs sampled was 5 years.
The majority of subjects fed their canines treats daily
(94%). Also a majority fed a premium, commercially available
dry dog food, with another 14% feeding a commercially available
specialized diet and one respondent feeding a prescription
diet. Further research is needed to elucidate relationships
between health status and dietary patterns in dogs.