OT on the bloat thing - I hadn't read the Great Dane Lady's opinion before, but I have to say that she has completely misinterpreted the Purdue information.
The first sentence tells you that she hasn't read the Purdue information closely - she speaks of "the claims that chest size, elevated dishes, citric acid, high fat diets etc., make the large/giant breeds (Great Danes) more prone to bloat." Well, that's *not* what the Purdue study says - what the Purdue study says is that these things *increase the risk* in dogs that are already prone to bloat.
She writes, "With that information in mind, it is logical that the majority, if not ALL of the dogs that came in to Dr. Glickman's survey, have been fed with an elevated dish. This is simply how he came to his "opinion" that elevated dishes cause bloat."
Again, this is completely inaccurate. Dr. Glickman looked at Great Danes who were fed from an elevated dish, and Great Danes who were fed from the floor. (And other breeds, as well, of course.) More of the dogs fed from an elevated dish bloated than the dogs fed from the floor, representing an 110% increased risk factor.
She writes, "In the early stages of this research, their hypothesis was -- the measurements of height, width and depth of the dog's chest - chest ration - was the determining factor for those prone to bloating. And if your dog fell within a certain range, it was at risk and would more than likely bloat."
That may have been true in the early stages - in the final stages, what was found was that dogs with a chest that was narrow and deep *compared to the average for the breed* bloated more often.
She writes, "The Bloat study says -- one should not use a food with fat in the first four ingredients, or a food should not contains citric acid (a natural preservative) and the food should have rendered meat meal containing bone in the first four ingredients. Dr. Glickman's study suggests that these things cause bloat in canines."
Again, this is untrue. The study states that dogs fed foods with fat in the first four ingredients bloated more often than dogs fed foods without it; that dogs whose owners pre-moistened foods preserved with citric acid bloated more often than dogs whose owners didn't, or whose pre-moistened food didn't contain citric acid; and that dogs fed food with meat and bone meal in the first four ingredients bloated less than dogs fed food without it. Dr. Glickman's writings only speak of risk factors, and not of cause - he has stated quite clearly and several times that they don't know what causes bloat.
She writes, "If you ask any well seasoned, knowledgeable breeder who lives with these animals, they will tell you stress is the trigger for bloat. Not the cause, but the trigger."
This is exactly what the Purdue research found, as well.
As a side note, I do find it a bit ironic that she criticizes Purdue for presenting their findings from several long-term studies on bloat, yet promotes a diet regimen for bloat-prone dogs based on nothing but her own personal opinions of what causes it....