Fade, hi.
I will second Marie on her comments:
1. Rotation is great, just make sure you do it over a few days. You can also add some canned/dehydrated/freeze-dried/air-dried/raw as toppers every once in a while, as well as maybe some coconut oil or fish oil (for Omega 3s), raw or lightly cooked eggs, and canned sardines, salmon, or jack mackerel (not tuna). Those are really good for dogs. For my 15lb terrier mix I feed one raw egg/week, 1/2 small can of sardines, and coconut oil every other day. I also use dehydrated/air-dried/freeze-dried as toppers on every dinner meal. I used to feed yoghurt too, but Bruno decided he’s had enough of it apparently, lol. But if your dog likes it, it is good stuff too. Kefir also.
2. Many dogs self-regulate, and many don’t. As Marie said, the bag directions are just guidelines, and many dogs require less than the recommended amounts. You should gage by body condition: https://dogchow.com/articles/1871/body-condition and adjust food amounts accordingly. My dog is at the caloric intake of 3/4 cups of food total, 1/2 cup dry and 1/4 cup (or so, calorie-wise) additives (“toppers”). This is within the recommended amounts, but when we used to exercise a lot, twice a day in the hot summer Georgia days, he would eat 3/4 cup of dry with similar amounts of additives. He was lean and mean even though he ate more.
3. As I have a small dog, I can’t tell you about good brands for large dogs, but this thread can: /forums/topic/large-and-giant-breed-puppy-nutrition/ Page 15 should have a link to a google doc with all brands written out, how they score, etc. It is an overall great resource for large breed owners.
Good luck, seems like Nala is in good hands! 🙂
