I just had a discussion the other day with the owner of the store I purchase Orijen from about high protein and large/giant breed puppies.
She said that a Bloodhound breeder and a Boxer breeder are both raising their litters on Orijen Large Breed Puppy and apparently they are not having any rapid growth issues/problems. She obviously couldn't give me any detailed information but I'm going to see if I can get their phone numbers. I'd like to talk more indepth with them about it. I'll let you all know what I find out.
That said though I am feeding Abby our Pug pup the Orijen Puppy. She's been eating it mixed with a small amount of Canidae canned since she was 5 weeks old, she's 12 weeks old now. It hasen't affected her growth at all, she's still one of the smallest in the litter. But I will say her fur is amazingly soft and shiny.
I also have Bubba (28 months old) and Lola (14 months old) on Orijen. I wasn't planning on putting Lola on it before age 2, but the recalls kinda pushed me in that direction.