Hi Sandnmila –
You don’t want to use Preference with a grind. Preference is designed to be used with boneless meat to balance the calcium to phosphorus ratio and if you add it to a grind (which contains bone and already has a balanced calcium to phosphorus ratio) you will throw off the calcium to phosphorus ratio. You also wouldn’t want to give Preference and a multivitamin – Preference essentially is a multivitamin (+ fruits and veggies). If you’re feeding grinds I would recommend cooking and pureeing your own fruits and veggies (cheapest) or buying baby food blends (I do this when I’m lazy, I buy the pouched fruit and veggie only blends such as Peter Rabbit Organics, Sprout, Earth’s Best and Ella’s Kitchen).
How often are you feeding grinds? If the grinds are 50% or less of Mila’s diet and the other portion is a balanced commercial food you’d be fine just giving her the grind plus a whole food supplement (such as the Nature’s Logic All Food Fortifier that Sandy mentioned) and forgoing a multi. I only recommend adding a multi if someone is feeding a predominantly homemade diet and doesn’t know how to or doesn’t want to take the time to properly balance the diet using whole foods.
