Generally it is known that a sudden change in cat's diet will result in refusal to eat the new diet or stomach upset. Some owners will try to out wait their cat who is refusing to eat the new diet, but this is not a good idea as it can lead to a potentially fatal disorder known as hepatic lipidosis (or fatty liver disease) in which in response to the body not receiving enough nutrients, fat is sent to the liver to be used as fuel, unfortunately the liver is not very efficient at processing fat, which begins to build up in the liver, causing it to no longer function properly.
Needs to change cat's diet ?
- Cats may be put on a prescription diet to help manage a medical disorder such as kidney or liver disease.
- They may have developed a food allergy.
- The food you are feeding may no longer be available.
- Switching over from a kitten food to an adult food, or an adult food to a senior food.
- Changing from wet to dry, or homemade etc.
- Bringing a new cat home, always ask the breeders what cat has been eating, so that you can have some of their regular food on hand and gradually transition the cat over to what we feed.
How switching should be done ?
- It is always recommended to avoid your cat turning his nose up at the new diet or getting an upset stomach, that the switch be gradual, over a few days.
- On day 1, add 10% new food to 90% old food, mix in well.
- Day 2, add 20% new food to 80% old food, mix in well.
- Gradually increase the amount of new food and decrease the amount of old food by 10%. If the cat stops eating the food as a result of the change, go back to the old food and try again, but slower, just adding 5% at a time.
- You can also help to improve the palatability of wet food by warming it for 30 seconds in the microwave.
Some sources may suggest the seven day of switching as shown in pic below.