Bigwater
If your dog refuses to eat the food that you bring for him while doing an energetic activity like camping, then your dog is eating something else. Do you camp in areas frequented by others and does your dog run off leash? If so she may be eating the droppngs of former campers. I believe my dog caught hepatitis eating human droppings around Mt Hood last year. Have you had any blood work done on your dog. Mine was getting too skinny and we discovered that her liver is badly damaged. If its hep or something it should respond to the 5 pills a day that she gets, if its liver cancer then I'll just love her as much as I can each day she's around. I could kick myself for not muzzling her when running loose in high use camping areas.

So anyway this is a warning. If you take your dog to an area where people camp, especially car camping especially with live stock, either keep her on a leash or muzzle her so she can't eat poisons or crap. My dog passed a blue kitchen sponge after a visit to the creek one day. Now we're fighting to save her life and I'm gonna be into it to a tune of over a thousand dollars, so think about that before leting your dog run loose.
Jim
NO NEED TO REPLY HERE, I MOVED THIS TO A NEW THREAD IN GENERAL DISCUSSION