Transitioning your cat to a raw food diet can take time and patience. Some cats will immediately take to their new diet as soon as it’s offered. Cats that are accustomed to canned or moist food also transition quicker than cats eating dry kibbles. I highly recommend that anyone wishing to feed their cat a raw diet visit for some great information on feeding cats a raw diet.
Some cats can be notoriously hard to switch due to their picky nature and due to the extreme addictiveness of many commercial pet foods. Some cats will choose commercial foods over raw food any day even after being fed a raw diet for a while. They are considered "pet food junkies". They are addicted to the carbohydrates and additives and after eating it for so long their bodies respond automatically to anything that smells like or resembles commercial food. Feed boneless meats for a few meals so your cat gets used to eating the raw food. Then add an easy bone like a bone-in chicken. Once your cat is accustomed to eating raw food, be sure to start introducing organ meat. You can try feeding a little liver or heart by itself. Start introducing a variety of meats over the course of time so that your cat becomes accustomed to variety as this is very important. Cats seem to tolerate initial variety better than many dogs, although too much organ meat can make their stools a little loose.
The first step in transitioning your cat over to a raw diet is getting rid of the "all you can eat buffet". This will make transitioning a lot easier. As with puppies you want to feed kittens several small meals over the course of the day. As the kitten matures and reaches adulthood you can phase the food into two meals per day and eventually down to one meal per day. Do what works best for your cat.
Feed cats about 2-3% of their ideal body weight. Since most cats are fairly small creatures this could be 1/4lb or less each day. This ratio can change based on your cats age, weight, activity level, metabolism and overall appetite. Some cats will eat more than this, and some might need less. Ultimately you’ll need to let your cat be your guide when deciding how much to feed him.
The best thing to do is to monitor your cat's body shape and weight. If the cat starts looking a little too lean and ribby, then up the amount of food. If the cat is looking too fat, then decrease the amount of food. You will quickly gain an understanding of just how much your cat needs to eat. Some cats will help you with this as they will only eat as much as they need at one sitting and will leave any extra behind.
Dr. Karen Becker has put together a video on transitioning cats to a raw food diet. Her recommendations have benefited many people looking to transition their cats to a raw diet.