Poultry Production

Poultry Production

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...the transformation of vegetable, animal, and mineral matter, in forms not edible by man, into food in the form of eggs and meat. This manufacturing process is accomplished through the agency of three physiological processes carried on within the body of the fowl. These processes are (1) growth, (2) reproduction, and (3) the storing of fat. Each process is made up of a number of lesser ones which are in turn dependent upon the proper functioning of many organs and tissues. The objects of feeding are to furnish the proper kinds and amounts of materials necessary: first, for the maintenance, in perfect adjustment, of the organs and tissues concerned in these tributory processes, and, second, to furnish the raw materials out of which eggs, bone, muscle, and fat may be manufactured. The maintenance of life.--The first use of all feed is to support life. Unless life is maintained it is obvious that neither growth, reproduction, nor the increasing of flesh may occur. The maintenance of life depends upon (1) the provision of heat, (2) the renewal of tissues, (3) a supply of muscular energy, (4) the elaboration of secretions, and (5) the proper activity of the organs and tissues. Heat is necessary in order that various functions of the body, such as digestion, fertilization, and incubation, may be performed, and which are at their best when that degree of heat which is recognized as the normal temperature of an individual is maintained. The normal temperature of the common fowl is generally recognized to be 106 F. This is considerably higher than the temperatures maintained by the human race or by the common farm animals, and is the result of the fowl's tremendously rapid metabolism. It is probable that only in the severest weather is feed used directly...show more

Product details

  • Paperback | 126 pages
  • 189 x 246 x 7mm | 240g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236609093
  • 9781236609090