Comparative studies on the physiology of exercise in work animals, with special reference to the steady state

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  • 役用家畜の勞役生理,特にSteady stateに関する比較研究
  • ヤクヨウ カチク ノ ロウエキ セイリ , トクニ Steady state ニ カンスル ヒカク ケンキュウ 1
  • I The case of Japanese Brown cattle
  • I 褐毛和牛の場合

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Abstract

Physiological effects of two hours moderate exercise for pulling the sledge, of which the average total resistance is 12% for the body weight, are studied in three Japanese Brown breed cows of standard type.<br>Results obtained are summarized as follows:<br>(1) The body temperature and number of respiration increased gradually throught the exercise.<br>(2) The pulse rate increased during initial 30 minutes of the exercise and did not increase there-after. <br>(3) Although the statistical significance is unsatisfactory, the blood lactic acid and blood sugar increased also during initial 30 minutes of the exercise and did not increase thereafter.<br>(4) When the exercise is continued 1 hour or more, the sedimentation velocity of red blood cells tended to increase slowly, but the statistical significance is still questionable.<br>(5) The hemoglobin, blood moisture and specific viscosity of the blood did not change significantly throughout the exercise.

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