I'm very new at raising goats. I got them to clean up weeds, and have a host of weeds growing in my windbreak - but the limbs of the white pine and other pine (evergreen) trees hang so low, that they eat those needles - is this a practice to allow? I have not turned them in there yet, but plan to put up an electric fence to keep them under the trees - great place to eat and be in shade at the same time. Please advise; I know goats eat anything, but how much pine needles can they handle? What they've reached from where they are, the tree is bare. thanks !