An encyclopedia should properly encompass the totality of human knowledge, or at least of some particular sector of it. Not so many years ago it would have been possible to contain all that was known of animal nutrition in a book the size of this, for the science of nutrition is young, but such has been the pace of its growth that that is no longer possible. The nutrition of farm animals is a complex subject, reaching into biochemistry, physiology, pathology, veterinary medicine, animal husbandry and agriculture and even, as evidenced in the following pages, beyond those disciplines. The subject matter of farm animal nutrition is covered.
