How To Take Care Of Abandoned Baby Cat. The care of a mother cat and the nourishment of her milk provide important antibodies and protection for the kittens as they grow. You can start to transition your kitten away from the bottle at 3 or 4 weeks of age.
Set it at its lowest setting. When your kitten is around 6 or 7 weeks of age you can switch her to a dry diet. If you are living in the tropics a heating pad may not be needed and in the event that the cat is feeling cold you may warm a water bottle until it reaches 100-degrees and wrap it in a towel before you place it in the box with them.
You could place some warm water bottles in amongst them.
Within the room or crate make a small nesting box for the momma to use to cuddle and feed her kittens. You can buy a cat milk replacer at the pet shop or amazon that so many products choose with the high rated. Ideally kittens should remain in the care of their mother until they are at least 6 - 8 weeks of age. Not too hot as these could burn their skin.