I have recently discovered that almost all dog kibble is baked at temperatures that are too high, and degrade ingredients. The only way around this being freeze dried according to that information.
I have a ton of medium grade chow that my new puppy is getting, along with homemade food, but mainly so I can keep up with his growth, which is good as I am cleaning out freezers! I probably won't buy more.
The old boy is only getting homemade food, lots of raw eggs, and he gets first dibs on baked fish heads and tails,etc before the puppy finishes things off.
My old boy has more energy than he had a couple of months ago, when I started cutting back and finally eliminating kibble over the past few.weeks. He has never had skin issues, but had chronic diarrhea when I adopted him a decade ago being his 4th owner, but probiotics, weeds, peelings, animal fat, raw pig heads, and cows feet, homemade bone meal from healthy meat, and second-broth after some for the humans, cooked with lentils and whatever, cleared his diarrhea in no time. My dog had a stress component though as well and all that settled down quickly but when I was away up north, he wasn't getting daily his freezer care packs of homemade food -- we are still going through all that now. So he was getting pure kibble half time. I gave him one more winter, but he is starting to get playful already! 75-85 lbs and 13 years old.
I have known dogs with skin issues and they all were eating kibble. High sugar being the worst.
I would try picking up red split lentils which cook up as quickly as rice, and get ground fennel for digestive enzymes. Make your own food, and raw eggs, raw, meat buy whole fish and feed the heads, try tapering off the kibble for a while and just see?
I am very curious how things went if you do try this.
PS it is way way cheaper to feed them this way.
What will I be doing with my nettles after making tisane? Chopping them up and throwing in the freezer in rewashed ziplock bags. The nice tender shoots I shall use like spinach for myself, but the rest will go in the dog food over the next few months. Then ditto in Spring!
You can also slow cook your turnip skins, sluggy celery, etc, and save the water and use up whatever you want to cook in the water for yourself, you and the dog, then fine slice the slush and again, care packs for dog food!
I hope this helps
The short list of bad dog foods are grapes and raisins, allium, especially raw onions, chocolate and cocoa.