反芻獣の脱水症に関する実験的研究 : II. 山羊の水分制限時における体液諸相の変動

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Studues were conducted to elucidate the part of the patlao-physiology of body fluids inthe dehydration of ruminants, using 5 healthy goats which had been brought into a stateof water depletion Lay cessation of water intake and feeding on a dry ration only.Total body water, extracellular water, and plasma volume were measured simultaneously,ustng NAAP, NaSCN, and T -1824, respectively. The maximum reduction of the body fluidcompartments at the last stage was 43.5% in total body water, 33.8% in extracellular water,52.9% in intracellular water, 31.1% in interstitial water, 47.6% in plasma water, and 37.6%in circulating blood volume.In view of the fact that the body weight was reduced significantly in the early stage,whereas there were no appreciable changes in the body fluids, it was presumed that thedecrease of body weight at this time was due mainly to the reduction of the water contentin the rumen. The deficiencies of total body water as expressed in per cent of the initial body vveightwere 2.7% in the early stage, 16.9% in the middle stage, 23.8% in the late stage, and 26.9%in the last stage.The rate of decrease of interstitial water (8.8%) was higher than that of intracellularwater (0.4%) in the early stage. This condition, however, was reversed in and after themiddle stage.
社団法人日本獣医学会の論文
1965-02-25