. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. 582 PHYSIOLOGY OF THE DOMESTIC ANIMALS. minute ; during rumination it varies from twenty-four to thirty-six, the position appearing to be without influence. In bulls and oxen the rate of respiration averages twenty in the minute. The frequent eructation of gas and pauses caused by rumination render the rhythm of respiration more irregular in ruminant than in other mammals. In the horse the normal respiratory movements may be placed at about ten
. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. 582 PHYSIOLOGY OF THE DOMESTIC ANIMALS. minute ; during rumination it varies from twenty-four to thirty-six, the position appearing to be without influence. In bulls and oxen the rate of respiration averages twenty in the minute. The frequent eructation of gas and pauses caused by rumination render the rhythm of respiration more irregular in ruminant than in other mammals. In the horse the normal respiratory movements may be placed at about ten in a minute; after only the slight exercise of walking two hundred yards, respiration in the horse may be increased to twenty-eight. Fig. 254.—Graphic Representation of the Respiratory Movements of a Horse while at Rest and After Movement. (Thanhoffer.) 1, standing at rest; 3. after a few minutes' walk: 7-8, after trottiug; 9, after a short reat: 11, after several minutes' trotting and running: 17. after a short rest from the trot and run: 51, ourve at the end of „,,, the experiment. I = inspiration; E = expiration; i = time in seconds. in the minute, while after trotting Ave minutes the respirations were found by Colin to be fifty-two to the minute, falling to forty in the fol- lowing three minutes, and were fifty-two, likewise, in a minute after five minutes' gallop (Fig. 254). In all animals similar facts may be noticed. Thus, in the sheep the normal rate of respiration is fifteen in the minute, and after running may be raised to one hundred or one hundred and fort}' in the minute; or. 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 Smith, Robert Meade, 1854-. Philadelphia and London, F. A. Davis
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