Wow! That is crazy. Poor girl, I had never heard of a dog being allergic to chicken/bird meat. She is a cutie!!
I would say that you'd be just fine making a diet with the primary meat sources being non bird animals. Consider the following ingredients instead:
- Beef
- Lean ground beef
- Lamb
- Goat
- Beef liver/heart for micronutrients
- Sardines/salmon/oysters (I would avoid tuna due to heavy metal bioaccumulation)
- Eggs (can she eat eggs or is she allergic to those?(
- You could look into pork meat - like pork tenderloin maybe?
Different dogs will slow down more in their older age. I noticed my dog start to get more chill when he was about 7 or 8, but he's been steady since then but he still goes strong and can do good long hikes and stuff. I massage his muscles and joints and also have this little "Roller ball massage glove" that he likes a lot for his ribs/sides and back. He gets massages pretty much every day and I try to do things to encourage him to stretch too, like scratching the front of his knee sometimes makes him stretch his iliopsoas muscle well. My dog gets about 16 mgs of CBD with breakfast and dinner. I give him pain medication very rarely as needed for hip pain, but usually I don't give him anything (remember, ibuprofen and a lot of human meds are toxic to dogs or at least are dosed way too high, you need special meds from the vet).
My dog loves to sleep a lot. He is less tolerant of the heat than he used to be and needs more water while we hike. But overall he can still make 3-6 mile hikes up and down the mountain. He was hiking at 10-12,000 feet for miles on our last vacation!
I think one of the best things you can do to keep their energy up is to keep them exercised regularly. Dogs seem to be similar to humans in that they can grow to become lazy. Also my dog almost never ever gets table scraps. If he gets anything it is just some meat, or maybe a little apple or banana, but overfeeding seems to make dogs lazier. We try to never give him anything with sugar in it or anything that is really very sweet. Both for health as well as dental reasons. For his birthday we would get him a cookie made specifically for dogs that has basically no sugar in it.
One last thing, I have been giving my dog C60 for the last couple of years. As in the supplement Carbon 60. I got it from C360Health.com. The research into C60's anti-cancer and longevity effects were compelling enough for me to want to give it to my dog. I took it for a while too, but it is SO expensive, so now only he gets it.
I don't know about steroids for the dogs. I know with humans winny causes the joint pain and such so I for sure wouldn't give it to my dog if it does that to dogs too. But idk, I am not sure increasing appetite is the right way to go? Animals that eat less tend to live longer. My dog gets pretty much the same amount of food regardless of whether we sat around all day, walked around our property, or went on a 4 mile hike (although he usually gets extra treats on the hikes so that makes up for some of it). He is not too thin, I would definitely up his food if he started losing weight, but he has stayed basically the same weight since he was about 3 years old.