We use to have maybe three or four milk cows on the farm that we had for our own use.  The cows use to be put into stanchions at night which had a gutter on the tail end to catch the urine and excrement. We use to wheel it out with a wheel barrow building the manure pile. Generally every spring when it dried out enough we loaded up the manure spreader by hand. When it came time to load the manure spreader I took off my boots and shoes and plodded through the manure squeezing it between my toes and up to my ankles while loading the manure spreader.

Makes a young lad grow tall doing that.