I once went to a breed club seminar. The morning was led by a highly qualified vet from a Scottish university talking about lymphoma. The afternoon was led by an enthusiastic springer man throwing chicken wings to his three canine helpers, and extolling the virtues of BARF.
In the question and answer session later, the Scottish vet was asked what he thought of the BARF diet. He replied that the dog food manufacturers thoroughly research what suits dogs best, and what the exact dietary needs of dogs are. He had a healthy eighteen year old terrier at home fed exclusively on kibble. He said that he would not feed a BARF diet.
For more than a dozen years now I have fed all my dogs on Nutro, an imported manufactured dog food, and little else. Whilst the average lifespan of water spaniels is about eight years, I have one still working on shoots in his twelfth year, and winning veteran in breed at Crufts this year. I have just lost a cocker at almost fifteen years, and her two eleven year daughters are hale and hearty.
I shall be sticking to Nutro, especially as thirty years ago I chopped the top of my thumb off, by hacking breast of lamb into inch square pieces for the dogs, even before the term BARF was invented!
John