Canine tracheal cartilage was stored in frozen state was used as sustaining material to correct the droopingear. It had been collected aseptically and prevented from contamination by placing in physiological saline containing an antibiotic. A piece of cartilage was inserted into the auricle in such direction as to form a right angle with the broken part of the auricle. Two or three pieces were required for a severe case.
In August and September in 1975 and 1976, 62.5% of young boars infected with Japanese encephalitis virus (JEV) manifested scrotal enlargement accompanied with pyrexia. Of these boars sacrificed within 5 days after the appearance of this enlargement, six harbored 102.3-106.3 TCID50/g of JEV.No virus was isolated from any boar 6 days or more after the appearance. The fluorescent antibody technique revealed antigen of JEV present in the protoplasm of spermatogonia and primary spermatocytes.
In January, 1978, four fattening cattle which died one after another were examined bacteriologically. Haemophilus somnus was isolated from principal organs of three of them. It was examined for morphological and biological properties and proved to be highly susceptible for chloramphenicol and other seven anti-biotics. When cattle raised in the same barn with the dead ones and exposed to contact infection were subjected to the sero-agglutination reaction with the isolated organism as antigen, many of them exhibited high ag-glutination titers.
Taira's method, developed for quantitative examination of Fasciola eggs in bovine feces, was applied to Cattle in Sendai, Miyagi, in 1978. As a result, the egg-positive rate was 11.% in 199 cattle extracted at random from the total bovine population of 1, 122 in this city. It reached 60-80% on one farm. EPG was 1-4 in most of those cattle and 14-33 in a few, which were kept on such farms as showing a high egg-positive rate.