James Russel Roberts, Stock and stalks (1921)
“ If more grain is fed there should be another reason for it, and that is that the cow readily responds to more feeding and makes sufficient profit to pay for the extra grain. The old rule, in the main, is true that it takes a certain amount to maintain bodily weight of the animal, and that the more feed above the maintenance ration that she can consume and turn into milk, the more the profit. ”
