We have been giving all of our Does about a cup of grain each day, but with our herd now up over 30 does it is getting very hard to make sure that everyone is getting their share of grain. We have been feeding everyone all together at the same time, but the older bigger does are pushing the smaller does out and eating more than their share. Is there a good way to feed them that we can make sure everyone is getting close to the same amount without having to separate them to eat?