The Book of Household Management by Mrs. Beeton

care and judgment; for though they are in reality not weaned till between the eighth and the twelfth week, the process of rearing them by hand commences in fact from the birth, the calf never being allowed to suck its dam. As the rearing of calves for the market is a very important and lucrative business, the breeder generally arranges his stock so that ten or a dozen of his cows shall calve about the same time; and then, by setting aside one or two, to find food for the entire family, gets the remaining eight or ten with their full fountains of milk, to carry on the operations of his dairy. Some people have an idea that skimmed milk, if given in sufficient quantity, is good enough for the weaning period of calf-feeding; but this is a very serious mistake, for the cream, of which it has been deprived, contained nearly all the oleaginous principles, and the azote or nitrogen, on which the vivifying properties of that fluid depends. Indeed, so remarkably correct has this fact proved to be, that a calf reared on one part of new milk mixed with five of water, will thrive and look well; while another, treated with unlimited skimmed milk, will be poor, thin, and miserable.