鶏の盲腸切除による飲水量の増大(鶏の盲腸機能に関する研究-20-)

概要

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In order to investigate the effect of cecectomy on water intake of chickens, the present experiments were carried out using Single Comb White Leghorn cockerels. 1. There were no differences in feed intake and water intake as well as water balance between intact and cecectimized 4-month-old cockerels when their water intake was restricted to 80ml/day. 2. By amputating main cecal vessels such as cadual, middle-and cranial-ileo-cecal arteries and veins together with the nerves attached to the vessels or the nerves alone, water intake and water excretion of 75day-old cockerels were increased similar to what had been observed on the chickens with their cecal ligated or ectomized. 3. The water uptake from ceca whose blood vessels had been amputated at varying degrees was studied using a perfusion technique. It was found that the degree of amputation had no effect on the water uptake. From above mentioned results, it is assumed that the increase in the water intake of cecectomized chickens had not been due to a defect in the organs responsible for water absorption but was due to a change in the stimulation of the thirstcenter because of the cutting of some nerves shifted on ceca.
社団法人日本畜産学会の論文