You may wonder how your pet began eating the commercial food it does now.

Fifty years ago, most dogs ate table scraps. Twenty five years ago, cereal companies cornered the pet food market in supermarkets and agricultural feed stores. now pet owners drive to super-stores that cater to dogs and face aincredible amount of colorful bags of dry premium foods, convenient semi-moist packets, and gourmet diets for puppies, adult dogs, hunting dogs, depict to dogs, lactating dogs, old dogs, and fat dogs.

Expanding the confusion is the barrage of advertising touting the good points of this or that food: It’s all natural, it’s real meat, it’s non-allergenic, it’s high protein, it’s low protein, it’s low-fat, it doesn’t have by-products, your pet will love it . . . Add to these claims the crying of the nay-sayers: It’s cooked, it contains chemicals, it causes allergies, they use road-kill and animals not fit for human consumption, soybeans cause bloat . . . and it’s a think of that anyone can decide to use.

Yet, now, the commercially prepared pet foods made from a fixed home cures of ingredients and preparation methods provides Buster with a balanced foods that you eat that rivals that available for humans. dog owners will help themselves by doing a little research, by choosing a food that meets their requires as well as Rover’s, and by demanding proof when told that so-and-so company uses roadkill, harmful chemicals, or rendered pets in its food or that a home-prepared raw meat and vegetable foods that you eat is healthy and commercial foods are making dogs sick.

History

The first commercially pet biscuit appeared in England after the US Civil War in the 1860s, and the industry in the US began shortly thereafter as a byproduct of breakfast cereal processing. American manufacturers included dried meat scraps in their dog meal for a balanced diet. The canning of horsemeat unsuitable for export began in the 1920s, and within 10 years, nearly 200 brands of canned food were available.

The pet food industry took an huge leap after World War II when the consumption of meat high and the availability of by-products led to development of the rendering industry and new uses for meat and bone meal. At about the same time, researchers at Ralston Purina developed a new method of cooking swine and poultry feeds, which led in use further production of dry pet food.

Dry foods gained in popularity and owners frequently top-dressed the kibble with canned meat. Thus the stage was set for an explosion in types of canned and dry foods and development of the convenient semi-moist foods and snacks now available.

Early kibble foods were made from a dough of grain flours, meat meals, dairy products, and vitamins and minerals baked in massive pans and broken after cooking. The development of the extrusion method, in which the dough was pressed through a rotary machine that molded or shaped the pieces before baking, revolutionized the growing industry. right now, many kibbled foods were prepared in a mixing pressure cooker and the resulting dough is extruded through a die and expanded with steam and air into small, porous nuggets. These nuggets could be coated with a liquid fat, carbohydrate, or milk product for added calories and palatability. These feeds must be at least 40 percent carbohydrates in order for the system to work and must be packaged in bags with a grease barrier of impermeable material such as plastic-coated paper.

Semi-moist foods could be cooked combinations of soybean meal, sugar, fresh meat or meat by-products, animal fat, preservatives, and humectants (wetting agents that allow the product to stay moist but not spoil). The dough is extruded into a wide variety of shapes to resemble ground meat or chunks of meat to appeal to the buyer; the dog doesn’t care. The coloring in semi-moist foods may be turn the pet’s manure reddish.

Canned foods come in four types: ration, all-animal-tissue, chunk-style, and stew. The ration foods are ground and cooked into a liquid, then canned. The animal-tissue foods could be not liquefied before canning and can include chunks of identifiable by-products such as arteries. Chunk-style foods were ground and shaped into chunks to disguise the by-products, then covered with gravy before the can is sealed. Stews are designed to please the owner.

In each of these types, the filled cans are sterilized.

Finally, frozen dog food is available in limited distribution. This is a meat-based food with no preservatives, made with fresh meat. It Generally contains a sweetener such as cane molasses that adds to the caloric content. It must be kept frozen until ready to use and the unused portion must be kept refrigerated.

As each improvement in shape, texture, or form is devised, more chemicals could be added. For instance,

Propylene glycol is a humectant in semi-moist foods;
Food starch, gums, and colors are used in gravies;
Flour, gums, and mineral salts could be binders in meat chunks;
Artificial flavors and colors could be added for palatability and owner eye appeal; and
BHA, BHT, ethoxyquin, and mold inhibitors are preservatives.
In all, more than 200 alternative ingredients were used in dog foods, according to Petfood Industry magazine