. The feeding of animals. Feeds. THE DIGESTION OF FOOD 105 a much simpler matter mechanically than with riuninants. Chemically, the results are essentially similar, i. e., the protein is in part changed to peptones. The food, after being swallowed, is not returned to the mouth, but is very soon brought under the action of the gastric juice with- out so long-continued preliminary preparation by remastication and trituration. For this reason the horse fails to digest coarse fodders so completely as the ox does. Besides, the stomachs of the horse and pig are too small to admit of so large an inge
. The feeding of animals. Feeds. THE DIGESTION OF FOOD 105 a much simpler matter mechanically than with riuninants. Chemically, the results are essentially similar, i. e., the protein is in part changed to peptones. The food, after being swallowed, is not returned to the mouth, but is very soon brought under the action of the gastric juice with- out so long-continued preliminary preparation by remastication and trituration. For this reason the horse fails to digest coarse fodders so completely as the ox does. Besides, the stomachs of the horse and pig are too small to admit of so large an ingestion of hay or similar material, as is the case with ruminants of similar size. In all species, however, the chemical result of stomach digestion is essentially the same, i. e., the protein is in part changed to peptones. (Fig. 3.). Fig. 3. Stomach of horse. B, esophageal at- tachment; A, pyloric end of stomach, with beginning of small intestine. THE INTESTINES The most extended portion of the alimentary canal, though not the most capacious in all cases, is the intes- tines. They consist of a tube diifering in size in its vari- ous portions, which begins with the stomach and ends with the anus. 149. Form and length of intestines.—^This tube is not a straight passage between the points named, but presents curves and folds, so that when straightened out it appears surprisingly long. Its average length with the ox is given as 187 feet, sheep 107 feet, horse 98 feet, and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jordan, Whitman H. (Whitman Howard), 1851-1931. New York, The Macmillan Company
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