The best food for Siberian cats needs to be full of protein and low in carbohydrates because the Siberian does not process carbohydrates well. Look for foods that contain at least 30% protein with 15%- 18% fat content for “growth/reproduction” or 18%-22% for “adult maintenance.” Also ensure it has Omega 3 fatty acids (fish oil) which help heart health, coats, inflammatory conditions, reduce blood pressure and cholesterol levels. Most holistic veterinarians will recommend adding taurine into your cat’s diet as most commercial cat foods that do not contain meat by-products will be deficient in it.
Other ingredients that your Siberian cat should avoid: artificial colors, flavors, preservatives, and fillers such as corn gluten meal or soybean meal. A high number of low-quality commercial cat food brands have been noted to contain cheap fillers which may cause obesity and other health problems.
Organic is best because you are feeding a carnivore with an extremely short digestive tract so the ingredients need to go from slaughter directly into the can without being exposed too long to oxygen or degradation from sunshine or contact with water or soil contaminated with pesticides, chemicals, etc.
However, all organic meats still use some form of preservation process since they would otherwise spoil quickly after being killed. Do not feed your cat raw meats or undercooked meats as they carry bacteria that are harmful to both humans and cats.
Siberian cats do not require carbohydrates in their diet unlike most other breeds of the cat because they are naturally evolved with an emphasis on proteins, fats, and water for hydration since the Siberian wilderness is harsh and cold during winter months with very little water available compared to warmer climates where there is an abundance of clean drinking water available year-round.
Siberian cats have evolved on a diet of small animals including mice, rats, birds, squirrels, etc., containing primarily protein, fat, some non-glucose carbohydrate material from the organs of the prey animals.
The fact that this type of animal-based diet contains little to no carbohydrates is the single most important reason why we should strive to feed our pets similarly.