. Cyclopedia of farm animals. Domestic animals; Animal products. 18 PHYSIOLOGY OP DOMESTIC ANIMALS act for several hours on starch. Ellenberger and Hofmeister hold that starch conversion takes place in the stomach through the development of fer- ments from the food itself. Oats yields such an enzyme; it is destroyed by boiling. These facts help to explain the universal use of oats as a food and its lessened digestibility when Fig. 19. Side view of interna] organs of mare. 1, Scapula; 2, humerus; 3, ulna; 4, radius; 5, ribs; 6, vertebral column; 7, ilium; 8, pubis; 9 ischium; 10, femur
. Cyclopedia of farm animals. Domestic animals; Animal products. 18 PHYSIOLOGY OP DOMESTIC ANIMALS act for several hours on starch. Ellenberger and Hofmeister hold that starch conversion takes place in the stomach through the development of fer- ments from the food itself. Oats yields such an enzyme; it is destroyed by boiling. These facts help to explain the universal use of oats as a food and its lessened digestibility when Fig. 19. Side view of interna] organs of mare. 1, Scapula; 2, humerus; 3, ulna; 4, radius; 5, ribs; 6, vertebral column; 7, ilium; 8, pubis; 9 ischium; 10, femur; 11, tibia; a, heart; 6, pulmonary artery; c, aorta; d, stomach; e, liver; f, cut edge of diaphragm; gg, hh, large colon; i small intestine; A-, kidney; m, small colon; n, uterus; o, rectum; p vagina; r, urocyst or bladder; 3, auus; (, vulva. The duration of stomach digestion varies. A hay ration requires six to eight hours; one of oats, five to six hours. When no other food is given, the stomach empties itself in fifteen to twenty-four hours. A sudden change of diet retards digestion and thus predisposes to indigestion and fermenta- tion. The food undergoes a sort of churning motion and becomes mixed toward the pylorus. After entering the left sac it is rapidly forced to the right side and its passage into the small intes- tine, regulated by a constrictor or sphincter muscle around this orifice, is rapid at the beginning of feeding and then slows until the stomach is about two-thirds filled. In this state, digestion is most active; over-distension arrests it. After this period the outgo equals the income until digestion is completed. The stomach, being small, empties itself two or three times during a meal. Different foods leave the stomach successively in the order fed. Hence, since proteid digestion is the principal function of the gastric juice, proteid concentrates, as oats, should be given after the hay to secure the benefit of prolonged stomach digestion. The incorrect
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Keywords: ., bookauthorbaileylh, bookcentury1900, bookdecade1920, bookyear1922
