When it comes to corn in pet food, there are many opinions. Some people seem to think that corn is only used as a ”filler” and that corn can be the cause of both digestive and behavioural problems. There is no reason for the resentment towards corn, seeing that it is actually a very nutritious and superior ingredient.
Corn is a good source of e.g. amino acids, which are important for healthy muscles, skin and coat. Besides corn is also a source of easily digestible carbohydrate, thus a source of quick energy for dogs and cats. Other than being an energy source, carbohydrates are a source of fibre, which helps to promote healthy and well-functioning digestion.
Other than amino acids and carbohydrate corn also contains linolenic acid, an essential omega 6 fatty acid important for a healthy and shiny coat and a good immune system. Essential fatty acids are fatty acids that the animal cannot produce on their own; hence, they have to be provided via plant sources in the diet, and for that, corn is an exceptional source. Another thing is, that corn contains many antioxidants e.g. vitamin E, lutein and ß-carotene all of which aid in strengthening the immune system. Compared to apples corn contains twice as many antioxidants pr. gram and is, therefore, a superior source of natural antioxidants.
Lately, there has also been an increased focus on grain-free pet food, and this concerns corn as well as seeing that corn is actually also a grain. Can a pet food containing corn be termed grain-free? The idea of grain-free pet food arises from the fact that especially many dog owners are worried that grains can cause digestive problems if the dog is allergic to grains. Fact is, that grain-allergy is rarely seen in dogs and cats, and almost in every case, gliadin is the cause of the digestive upsets. Gliadin is a peptide found in e.g. wheat, oat, barley and rye. Gliadin is the cause of gluten-intolerance seen in humans. Corn does not contain gliadin, and will therefore not be the cause of an allergic reaction or digestive upset as wheat could potentially be. Thus, pet food containing corn can be termed “grain-free” even though a more correct term would be “gliadin-free”.
Bottom-line is, there are no reasons to avoid pet food containing corn. On the contrary, there are many nutritional advantages associated with corn as an ingredient. Hence, it is not correct to perceive corn as just a “filler”, unhealthy or harmful for neither dogs nor cats.