Adult food for growing kitten?

Well, my two kittens are now about 4.5 months old and weigh over 5 lbs. I got them some PurinaOne (Chicken & Rice) and transitioned them over from the previous food (which is the Costco Kirkland-brand for all life stages). Until what age/weight should they be eating kitten formula?? Did I switch them over too soon? The Purina mentions that it's for adult cats but also shows the minimum weight as 5 lbs.

You can give them adult food. Actually, I hear that the Kirkland brand food is pretty good food, although I've never checked it out.

If you have males who will be neutered, try and give them more canned food than dry.

If you like the Kirkland food for all stages, then there's no reason to switch them. I used to work at the Humane Society and every vet had a different opinion. One said that kittens should eat kitten food until they're a year old. One said until they're old enough to be spayed/neutered (usually 5 months--though they're doing them now as soon as they weigh 500gm which is usually 6 WEEKS). Another said until they stop growing (which in some breeds or just some cats, can be up to 2 years!). My own personal vet, who was of the opinion that kittens should eat kitten food until 1 yr of age, took a look at my 6 month old, 10 lb cat (who a different vet thought was a nice-looking 3 yr old!), and said, put him on adult food!!! As long as they're eating a balanced diet, there's not going to be any harm in feeding them an adult food "too young".

It's sort of like trying to figure out when to put an adult cat on "senior" food. Most "senior" foods say at age 7 they need changes in their diet, but now there is this Iams Multi-Cat which says it's good for cats 1-12, and then I look at my mom's cat, who just celebrated his 18th birthday; he's been eating "senior" food longer than he was eating "adult" food, and he's only started slowing down in the last year! So use your judgement, talk to your vet, and just choose what feels right to you. No one is going to tell you you're a bad kitty-mom because you're feeding your kittens adult food--and if they do, gently remind them that you're feeding them, period.

Give kisses to the furry ones for us!!
Melissa

I would suggest keeping your kitten on the kitten formula until 1 yr. They need the extra fat and protien. Adult cat sizes range drastically so going by weight is not accurate.