Hallo all, meet Odin 9 weeks old now

I have some concerns, the breeder had him on Hills Science Plan Puppy, and it is chicken based(His stool was loose when I got him). I purchased Acana Puppy and Junior, which is also chicken based, I am slowly moving him over to the Acana, but his stools are still the same, and he is getting itchy. When I do some training with him I use small chicken pieces and shortly after he needs to go and the stool is extremely loose to liquid. Is he allergic to chicken, or still just a puppy tummy?
All other puppy food I can get is all chicken based. The best food I can get here in South Africa is Acana. Any suggestions on what I can do?
Regards,
Dieter

I have some concerns, the breeder had him on Hills Science Plan Puppy, and it is chicken based(His stool was loose when I got him). I purchased Acana Puppy and Junior, which is also chicken based, I am slowly moving him over to the Acana, but his stools are still the same, and he is getting itchy. When I do some training with him I use small chicken pieces and shortly after he needs to go and the stool is extremely loose to liquid. Is he allergic to chicken, or still just a puppy tummy?
All other puppy food I can get is all chicken based. The best food I can get here in South Africa is Acana. Any suggestions on what I can do?
Regards,
Dieter