MastiffLove ~
Don’t try adding too much to the kibble you feed. All those toppers add to nutrients already in whatever kibble you decide to feed, including perhaps calcium/phosphorus – which should be your primary concern until your Mastiff is at least six to twelve months old. Not saying you shouldn’t add anything, just be mindful of what they’re adding to the diet.
When feeding kibble, it’s unlikely that you’re going to find the perfect food for a large breed puppy. When I brought Mystery home, I’d already done several months of research on food. Although I would have preferred grain-free, I couldn’t find it with an acceptable calcium percentage. I put him on Innova LBP (which has since changed their formula and I’m not sure I’d recommend it now but it’s still better than Pro Plan, Science Diet, Iams and others). I moved Mystery to Orijen LBP when he was about nine months old and able to process excess calcium properly. Orijen will tell you that they shoot for their minimum percentage but as long as they think their maximum is acceptable (and they do hide behind the AAFCO guidelines), I wouldn’t have been comfortable with it in those early months.
Mystery is now a year old and has been on a raw diet for about two months. We’ve transitioned two more Goldens in Korea with my husband and I’m working on four cats (the kitten didn’t need transitioning). If I were to get another puppy today, she’d go straight to raw where calcium/phosphorus is perfectly balanced among protein and organs in a whole-prey diet. And still I don’t add a lot to his diet. He gets coconut oil because of a skin condition, vitamin C and curcumen because of the high cancer mortality in Goldens (though the raw diet and minimalist vaccine schedule will help that as well), and garlic for pest control. I haven’t started adding any fruits & vegetables as I’m still researching their benefits (or lack thereof).
Good to see your note about not feeding RC!
