I'm glad to read your dog is doing well on your new homemade dog food recipe. You might want to go check out the link I'm sending for William Cusick's website- he is the one that gave me the most useful information when I researched. He contends each dog variety is different in their nutrition needs- makes perfect sense to me. He makes recommondations on this site- a little vague but you can at least get the basics without buying his book. It looks to me like you can avoid the Rye question altogether- personally I would use wheat germ or bulgar wheat and flax seed for your Australian Shepherd instead. I don't grind the flax- I put it in whole and our dog is able to digest it. Makes it really easy to use. I used to use Flax seed oil and that would probably be the best but it is so expensive. Making homemade food is expensive enough so I economize a bit by using the whole seed instead of the oil.
aloha
http://home.att.net/~wdcusick/AustralianShepherd.html
aloha
http://home.att.net/~wdcusick/AustralianShepherd.html