Just to follow up on Mastifflover's post - there are actually newer studies that have slight variations on what was recently recommended : http://www.crittersitextra.com/petti...loat_Study.pdf
* Feed two or more meals a day
* Feed no more than one cup per 33 pounds of body weight per meal when feeding two meals a day
* Feed an energy-dense diet, to reduce volume, but avoid a diet where a high amount of calories are from fats.
* Feed a variety of different food types regularly. The inclusion of human foods in a primarily dry dog food diet was associated with a 59 percent decreased risk of GDV while inclusion of canned pet foods was associated with a 28 percent decreased risk
* When feeding dry food, also include foods with sufficient amounts of meats and meat meals, for example: beef, lamb, poultry, and fish.
* Feed a food with larger particles, and include larger pieces of meat to the diet.
* Avoid moistening dry foods
* If your dog eats rapidly, find ways to try to reduce his speed of eating
* Avoid raising the food bowl - place it at ground level
* Try to minimize stress for your dog. Stressful events have been reported to be precipitating factors in GDV occurrence.
* Restrict vigorous exercise one hour before and two hours after meals.