The old rule was between 9 to 12 months (when the pup has stopped growing). Vets are changing that view - esp. where big dogs are concerned but the reason being can also be applied to small dogs. Puppy food is much higher in fat (energy packed). Funny that you ask this today because I just got the newest issue of AKC Gazette yesterday in mail and brought it with me to work to read on the train:
"Commerical puppy food forumuals, although balanced according to government regulations, may provide too many calories rather than correct nutitional density necessary for gradul, consistent growth. The added calories may provide energy but they also add poundage that puts undue stress on young bones, joints and tendons, especially for dogs who have a genetic predisposition to hip dysplasia [referencing large breed dogs].
Bernadette Cruz, DVM, whose special interest is in senior dogs and thier health proglems, prescribes lifelong adherence to good-quality adult food for these breeds. She agrees with breeders who suggest switching from puppy formula to adult formula at 4 to 6 months of age rather than at the cusomary 1-year point."
It's an interesting point. Toy dogs, while not likely to get hip dysplasia are very prone to patella luxation (in fact I was just on the phone with a vet specialist on Long Island regarding my own dog who I'm afraid may need knee surgury in order to continue doing agility and depsite my vigilance about keeping his weight and condition in check). Far too many toy breeds are obese. Perhaps, just like with children, fat puppies mean fat, arthetic adults. I'd be interested to hear what the breeders on the board suggest for their new puppy owners? |