Excerpt from Poultry Foods and Feeding: A Manual for All BreedersThe thoughtful reader must agree that the presence or absence of certain constituents in the food consumed by man and beast (or bird) must have a cumulative, even if not an immediate effect. Disuse of any part or function is followed by atrophy and disappearance.Chemists teach that between even the cells of which our bodies are built up there is a never-ceasing inter change of compounds, depending upon chemical and enzyme action. There can be no such action if the chemical constituents are absent or altered, or if, through cumulative effects extending through generations, the work of the enzymes, or their very nature, is altered.No single system of feeding, nor group of foods, can produce the universal panacea for the many troubles which may rightly be traced to improper feeding. That the medical world is alive to this fact may be seen on reference to the Special literature circulating among the profession.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.