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Summary. The (Dussardier, 1960) ; 2) the anatomical arrangement of the thoracic course of the vagus nerves was different, and section of the dorsal trunk above the diaphragm immediately arrested forestomach motility. With the procedure used in pigs, we failed to obtain sheep completely deprived of digestive afferences. Contrary to this finding, the exeresis of only one nodose ganglion was followed by a transitory arrest of the forestomach cycle, ranging from some minutes to several hours, and in one case by even a definitive arrest. After the meal, gastric contraction frequency was lower and less durable than in intact animals. Two out of 8 animals died from pulmonary oedema within 12 to 33 hrs,while the section of only one cervical vagus nerve was well tolerated.

Centre de Recherches zootechniques, 78350 Jouy-e!a-Josas (France)

Summary.Tests of surgical treatments (graft of small intestine, and partial enterectomy before or after irradiation) and dietetic treatments (continuous parenteral feeding) were carried out on 80 pigs irradiated over the posterior half of the body with doses of between 950 and 1750 rad at mid plane.The results relate to clinical symptoms, survivals, haematology, and histopathology; nutritional aspects were studied by means of evaluation of balances (nitrogen, lipids, and minerals) and absorption tests (58Co -Vit. B 12 and iodised lipids).Above 1200 rad recuperation of the digestive system did not in general make prolonged survival possible; in addition to intestinal lesions, renal and especially pancreatic atrophy appeared, whose consequences appeared to be determinative as regards the nutrition and hence the survival of the animals.

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