Some leeches were found in the feces of an 8-month-old bitch of the Shiba breed raised in Yono, Saitama. From their morphological characteristics, they were identified as Bipalium fuscatum Stimpson, 1857. They must have been ingested by the bitch while they may have been living in the bush, and discharged in the feces, without being digested.
Four male and three female dogs 2-3 years of age were subjected to an operation of forming an anastomosis between ureter and intestine. The ureter was excised at a site close to the bladder. The excised end of the ureter was ligated with 2 pieces of silk thread about 1 mm apart. The ureter was cut open longitudinally about 4 mm beginning with the site of ligation. Each end of a portion of the intestine where an anastomosis was to be formed was ligated with a sustaining thread. A small dissection was made in this portion. Through it the ureter was inserted into the intestine. The 2 pieces of silk thread were taken out at a site about 1-2 cm far from the portion of insertion and fastened with each other on the surface of the intestine. In this manner the ureter was fixed on the internal wall of the intestine. Then the sustaining threads were fastened on both sides of the portion where the ureter was inserted. Judging from postoperative findings in each dog, the operation was regarded as practicable clinically.
Samples were collected from 7 sites of each lung in pigs fed a powdered ration or a mixture of powdered and regular rations and pigs showing retarded growth and examined histologically. The foreign body found in lesions of aspiration pneumonia consisted mostly of starch. It included hairy substance and plant tissue. These lesions were most frequently found in the pigs showing retarded growth. There was no difference in the frequency of occurrence of these lesions between the pigs fed a powdered ration and those fed a mixture of powdered and regular rations. In conclusion, the powdered ration showed no positive tendency to induce aspiration pneumonia.
When inoculated with attenuated S- strain Japanese encephalitis virus vaccine, SPF pigs 1 month old presented no abnormal clinical signs, but retained antibody for a long time and resisted challenge with the high virulent AS-6 field strain. When inoculated with the same vaccine, pregnant SPF sows exhibited no clinical symptoms either. Autopsy on them revealed no abnormal fetuses and no virus was recovered from them. In a field trial of this vaccine, the frequencies of occurrence of dead fetuses and sows giving birth to abnormal fetuses were lower in sows inoculated once or twice with this vaccine than in those inoculated with no vaccine. In conclusion, this vaccine is safe and well immunogenic for piglets and pregnant sows, and effective for the prevention of stillbirth to be caused by Japanese encephalitis virus in swine.