Recently this was posted in one of my groups, I've heard of the Purdue study and results and had a general understanding, but this was put in very concise way and felt it deserved being shared. With deep chested dogs.... you just live in constant fear, it's nice to know some definite things you can do to reduce the risks.
“BLOAT”
Gastric Dilatation Volvulus or "Bloat" occurs in many deep chested
large breed dogs (including the Weimaraner).This is a report of a
presentation by Dr. Larry Glickman, an epidemiologist at the School of
Veterinary Medicine, Purdue University, who has been studying canine
bloat for a number of years. Dr. Glickman has been following a study
group of 1600 individual dogs from 11 different large and giant breeds.
Dr. Glickman's findings suggest that much folklore about bloat
prevention is wrong. Specifically, he noted that:
~ Raised food bowls doubled the risk of bloat~ Stress was not in itself a factor in susceptibility to bloat, but how dogs handle stress can increase their risk.
Diet does seem to be a risk factor. Glickman noted that the United
States has seen a 1500% increase in bloat over the last 40 years, with
certain breeds at greater risk (e.g., about 40% of Great Danes will have
an episode of bloat at some time in their lives). In contrast,
Australia has a very low incidence of bloat. The difference, Glickman
argues, is in feeding methods. Australian dogs have a different diet
(different commercial feeds, more home-cooked food) than American dogs.
Feeding dogs’ high-fat foods (fat as one of the first four
ingredients on the dog food label) and adding water to dry foods
containing citric acid resulted in a statistically significant increase
in bloat, according to Glickman's study. In contrast, foods containing
rendered meat and bone meal as one of the first four ingredients
decreased the risk of bloat by about 53%.
While age is certainly a factor in susceptibility to bloat - older
dogs are more likely to bloat than younger ones - genetics also plays a
significant role. Risk increased for dogs with a first degree relative
who had bloated.
Dr. Glickman's study resulted in the following recommendations:
~ Do not feed high-fat food
~ Do not breed a dog with a close relative who has bloated
~ Do not feed from a raised food bowl
~ Do not add water to dry food
~ Feed energy dense food (concentrated energy in low volume formula)
~ Do not feed foods with citric acid; or, if feeding such foods, offer them dry.
~ Provide more than one meal per day
The symptoms of bloat are well known: restlessness, salivation,
pacing, labored breathing and other signs of physical distress. Some
dogs may also have a distended belly. Not every dog shows all these
symptoms -- in fact, some may show little or no evidence of discomfort.
It is vital for owners to be aware of what is normal for their dogs, as
bloat is ALWAYS a medical emergency.
Those who live some distance away from veterinary facilities should
learn how to pass a stomach tube; a veterinarian can demonstrate this
procedure. Further information about the Purdue Bloat Study is available
on the web at www.vet.purdue.edu/epi (Source: National Health Symposium, Memo to Members, Irish Setter Club of America August 2002)