I'm new to cattle. I bought 5 brangus cows, all bread. My pasture if full of coastal grass, not in the best of shape, it was fertilized this year, limed two years ago, has some weeds. Cows are on about 20 ac. The grass is not lush green like some pastures. My queston is with bread cows is it safe to feed range cubes in small amounts, and will it do harm to the unborn calves? Thanks.