Dairymen whose cows can have a drink of water whenever they want it - night or day - will get more milk and butterfat from the same amount of feed and care than the dairymen who water their cows only a couple of times a day.
Cannon, C. Y.
"Water for the Cows,"
Farm Science Reporter: Vol. 5
, Article 6.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol5/iss2/6