I was given 5 free chestnut trees for Earth Day. They were a hybrid of American with a little Chinese (to protect against blight). My brother doesn't want to plant the trees in the pasture because he believes the chestnuts may be like acorns and make the cattle sick. I really want the chestnut trees because I think they are great for wildlife and will provide shade. Are the tree safe to plant around Herefords? Are there maintenance recommendations, such as picking up the chestnuts that fall on snow?