Kittens become adult cats in approximately one year.  Like adult cats, kittens also require almost double the energy per kilo of body weight.

Kittens should be fully weaned between six and eight weeks of age and you should get them used to regular food with a balanced and complete diet for the kittens' growth.  Baby felines need high levels of protein as well as the amino acid Taurine, an essential amino acid for the nutrition of cats: its prolonged absence can cause serious changes in health, at a minimum like retinal degeneration, reproductive disorders, nervous ailments, stunted growth, etc.

If the food you give your kitten is balanced, vitamin supplements are not necessary.  The excess of these could alter the nutritional balance and be harmful.  Vegetable products lack or contain small quantities of this amino acid: it is very present in meat products.

It is recommended that you feed kittens two or three times a day during this stage of rapid growth.  You can moisten dry foods with warm water to soften it and make consumption easier.

Between six months and a year of age, you can serve the cat enough food for the whole day and the cat will freely eat it.  But you should avoid overfeeding.

The quantity of food depends on the activity and body condition.  Going over the amount of food that a cat needs, you run the risk of obesity, a rather common problem.  You should avoid this as it is not good for their health.  You should refer to a veterinarian at the time of a check-up.  A veterinarian can help you to evaluate your cat's body condition and, if necessary, recommend a weight reduction plan.

You can follow the instructions on cat food packages and use them as a guide.  Active cats and cats that are left outside may require more food to keep their body in good condition.