I've been on many diary farms as a spectator. Its interesting to watch the farmer bring the critters in after being out in fields all day, they go right to there stall without proding. They line up the same way at the same time every day. The modern farms in Maine know how much milk comes from each cow and a computer figures how much that cow gets for feed based on milk given.It's so different than what one might imagine. Some farms in the midwest milk as many as 3000 cows. The manure is used to produce electricity(methane). Not sure if city folks understand how much manure 3000 head produces
