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As much as we might hate to admit it, flatulence is a normal biological function. A surprising amount of air is swallowed just with the simple act of eating, and if this is not burped out, it must exit through the other end. The amount of air swallowed tends to be increased when dogs feel they must eat quickly or in brachycephalic breeds (dogs with a compressed upper jaw and a short muzzle) that tend to breathe more by mouth than by nose.
Flatulence comes from an excess of gases in the intestinal tract. These gases may represent air that has been swallowed, gas produced in the biochemical process of digestion, gas diffusion from the bloodstream or gases produced by the bacteria that populate the intestinal tract. Contrary to popular belief, more than 99 percent of the gases that pass from the intestinal tract are odorless (whew!).
Dietary fiber in pet food is not easily digested by the pet’s own enzyme systems, but it is, however, readily digested by the gas-producing bacteria that live in the colon. As fiber is broken down here, hydrogen sulfide is produced, which is the cause of the really stinky gases. Therefore, a diet that is heavy in fiber further promotes a “happy environment” as well as “food” for the bacteria, ultimately producing more gas.
Helping clear the air
Offering your pet a highly digestible, low-residue diet is one of the major ways to combat flatulence. A low-residue diet is designed to reduce the frequency and volume of stools, while prolonging transit time through the intestine. It is similar to a low-fiber diet, but includes restrictions on foods that increase bowel activity. Changing to a low-residue diet means that most of the nutrients of the food are digested and absorbed by the pet before they reach the colon, where the gas-forming bacteria live. Less food for the bacteria equals less bacteria, which equals less gas formed.
Sometimes just going through a case and/or bag of such a low-residue diet solves the problem and the pet can return to a regular food afterwards. If necessary, the therapeutic diet can become the pet’s regular food. Low-residue diets are available through your veterinarian, pet supply stores or can be cooked at home (boiled white rice, skinned chicken, cottage cheese and balanced with vitamins and minerals constitute low-residue ingredients).
Other easy changes that can help include:
Are there some medical conditions that can increase flatulence?
Changing the diet and ruling out actual intestinal disease are of primary importance in addressing flatulence. Some disease processes that can cause an increase in flatulence include:
Medications and herbal and botanical supplements
Sometimes medication can help. Although there are many products available, most are unfortunately not as helpful as they are touted to be, or not labeled for animal use. There are more than 30 herbal and botanical preparations available to reduce gas in the stomach and intestines; however, the dosage, safety and efficacy are unknown.
If further therapy is needed, the following products have some basis and support that they may be of help for flatulence:
Some popular, but more questionable, products with regards to treating excessive flatulence include:
While flatulence is a normal part of everyday life, if the problem persists or seems severe, it is recommended that you consult with your veterinarian. Even our pets sometimes need a smog check!