Cat guardians who would prefer a more natural approach can use raw or home cooked diets using novel proteins for the food elimination trial, or as a long term solution. Work with your holistic veterinarian to determine the best approach for your cat. Some cat guardians have been able to resolve food allergies by simply switching to a raw diet even without the use of novel proteins.
Cat Diseases - Allergic Dermatitis and Skin Conditions | Hill's Pet
The first and best remedy for a food allergy is a food trial with a “hypoallergenic” or “novel protein” diet. This may be homemade, such as ham baby food with white rice, or commercial cat food, such as duck and potato, or rabbit and green pea. Canned foods usually work better than dry diets. The diet must be strictly followed—no snacks, treats, or other cheating—for several weeks, although a response may be seen as quickly as a few days. Not only can a diet trial support a diagnosis of IBD, but it is also a method of treatment, and many cats will experience a complete remission of symptoms with dietary changes alone.
Cat Diseases - Allergy and Food Intolerance | Hill's Pet
Another reason behind the rising trend in food allergies can be understood when you see what ingredients are the biggest allergen culprits, Chicken, Salmon, and Pork. To understand why these 3 proteins are what's causing the issues all you have to do is go to any pet food store and start reading the ingredients on every product. You will quickly find that no matter what meat is being advertised on the front of the package, you will always find Chicken and to a lesser degree, Salmon or Pork in everything! This is because it is more economical to sell Pet Food that advertises a more expensive or unique meat and use it sparingly and yet get most of the protein content from the cheaper Chicken sources. This over-utilization of Chicken for all protein sources in all Pet Food is alarming! Unfortunately, the only way to combat this prevalent problem is to use (LIDs) "limited ingredient diets." Although the selection found within stores is dismal and only slightly better online, these LIDs will use only a single protein source which is listed and a few other ingredients to lower the incidence of overusing any particular ingredient. While this is the best solution to avoid food allergens in cats that have an already established Food allergy, LIDs can also help to prevent Food allergies altogether! My recommendation is to incorporate LIDs into your animals diet NOW before any allergy presents itself. You do not need to restrict yourself to using only LIDs if you're trying to prevent an allergy but do incorporate some LIDs to limit the over-use of Chicken.
Food Allergies in Cats with Dr. Jean Hofve - Floppycats