Itabisashi T
Natl Inst Anim Health Q (Tokyo). 1976 Winter;16(4):176-82.
To confirm the transfer of ammonia leaking from the rumen content via the liver to the perid by laparotomy. When ammonia leakage from the hepatic vein occurred, it was followed by an increase in ammonia concentration in the jugular vein. There were increases of ammonia concentration in the intestinal vein and in the thoracic duct after urea drenching. These increases suggested neither trapping ammonia in the peritoneal fluid nor responsibility for increases of ammonia in the systemic circulation, respectively. At times when respiration ceased due to urea poisoning, the peritoneal fluids wee in the fluid. The hypothesis of the peritoneal cavity-thoracic duct route of ammonia absorption, presented by some of previous workers on urea toxicity, was not supported in the present study.
通过剖腹术来确认瘤胃内容物中泄漏的氨经肝脏转移至外周循环的情况。当肝静脉出现氨泄漏时，颈静脉中的氨浓度会随之升高。灌服尿素后，肠静脉和胸导管中的氨浓度均有所升高。这些升高分别表明腹膜液中不存在氨的截留现象，也并非导致全身循环中氨增加的原因。在因尿素中毒而呼吸停止时，腹膜液位于液体中。先前一些研究人员提出的关于氨吸收的腹膜腔 - 胸导管途径这一假说，在本研究中未得到支持。
