I finally got my friend to let her kitten eat raw. She is actually asking me to cat sit her kitten for 2 weeks, and so she agrees that I can let him try raw. He takes raw right away, especially chicken and turkey. Rabbit and duck are so so, but he will still eat it if you put him away from all the distractions.
Even that, my friend still insists that she wants him to be on 1/2 canned, 1/2 raw for a year, to make sure different things go into his system. No, I do not think it is making sense, and will do good for the kitten. To ensure different things going into the system, it can be different protein and brands. Anyway, he is her kitten. All I can do is suggest a better canned food (he was eating Royal Canin baby kitten) and suggest some raw.
I hope when she picks him up, she will notice the difference of his body shape and energy level when he is on raw.