When we brought home Penny, our dane puppy (now 4 months), our breeder had given us a comprehensive feeding program for her which consists of:
1) Iams large breed puppy until 4 months (with acute care powder)
2) medi-cal adolescent from 4 months to 1 year
3) Iams large breed adult from 1 year onward
When we talked to our vet about them ordering the medi-cal (they don't have the adolescent formula in their office) he basically chewed us out and made us feel like terrible people for even CONSIDERING feeding her that. He said that taking her off of a puppy food before 1 year would be very bad because the adolescent food has too many calories and too much calcium, causing rapid growth and poor bone formation (apparently the calcium can cause the bone plates to close too quickly which can result in things like HOD or OCD).
I am very hesitant to go against my breeder's feeding plan though, as she was very adamant about following it to the letter. Also, I've seen her own dogs many times and they are all very good looking; good size, good coats, good joints, etc. At this point I'm just wondering if there really is a problem with this plan, or if it really just comes down to matter of preference?