Hi RescueDaneMom –
There’s no need to add additional muscle meat to Primal grinds – all have balanced C:P ratios except for the beef and buffalo which actually have more phosphorus than calcium and thus should be fed with some RMBs. You would want to add vitamin e, vitamin d (such as cod liver oil), omega 3′ and a whole food supplement. I would also recommend feeding some canned oysters once or twice a week (high in zinc and selenium) and some ground nuts or seeds (like sunflower seeds or pumpkin seeds) a few times a week (high in manganese). Yogurt or kefir is rich in probiotics and can make a good addition as well. Cod liver oil is rich in vitamin a but there’s really no need to worry about vitamin a levels – if the dog is getting liver (which it will be if its eating the grinds) and fruits/vegetables it will be getting plenty of vitamin a. Also keep in mind that the vitamin d requirements are 500 IU per kg (or approx. (227 IU per pound) on a dry matter basis – one lb. of raw food will provide around 0.3 lb. dry matter. Therefore, you would need around 68 IU per pound of raw food (minimum). I give my girls each a capsule of Carlson Cod Liver oil daily which has 250 IU vitamin d per capsule – they also get a some lower levels from beef liver, eggs, dairy. A glandular isn’t necessary, I think it can be beneficial though.
