Willis P. Hazard, How to Select Cows
“ A great milk cow, whatever may be her aptness for fattening, and her condition of fat at the time of calving, becomes thin about fifteen or twenty days after calving; the time of her rut is therefore less near than that of a poor milk cow, because her vital forces are weaker. Witness the quantity of her yield, which is only that of a cow of medium product.One can compare a milch cow to a fruit tree, which gives more fruit this year than the next. When the sap of the tree carries vigor to the development of the fruit, the growth of the wood remains nearly stationary. ”
