So my 8 week old chicks just finished their bad of starter/grower....I have a half a bag of grower/finisher....I know the bag says they are supposed to be on the starter/grower for 10 weeks....Does 2 weeks really matter?
Not really. Either would do just fine. Grower isn't very high in protein, so if they eat a bit more of the finisher, you'll understand. This may also ever so slightly slow their grow curve. Starter allows you to supplement with low protein feed items. If you do feed high protein feed supplements such as meal worms, you'd be more than just fine.
Since they eat so much and you have the Grower, I'd never waste it. They'd surely get it. LOL