Twenty dogs were infected experimentally with Trichophyton mentagrophytes, Microsporum gypseum, orM. canis. When they recovered spontaneously, they were inoculated again with the same or a different species. Six of them were reinfected. They took almost the same course of infection as in the initial infection, except one which showed milder symptoms and a shorter course of infection than in the initial infection. No reinfection was induced in dogs positive for the trichophytin reaction at the time of reinoculation or in two of 8 dogs negative for that reaction at this time.
At the Nishinomiya Meat Center, Kokura, Kita Kyushu, and *Practicing in Kita Kyushu, Fukuoka 187 hybrid hogs were selected at random and classified into 3 groups on the basis of intensity of watery pork:(-), macroscopically normal, (+) slightly watery, and (++), severely watery. When the level of lactic acid was examined in the longissimus thoracis muscle, it reached a maximum mostly 30 minutes after slaughter and remained at this level until 4 hours after slaughter, when the examination was finished, regardless of intensity of watery pork. The plasma level of adrenalin was estimated in blood samples collected every minute after slaughter. It showed a statistically significant increase 3 minutes after slaughter. There were no statistically significant differences in it among the 3 groups.
So-called emphysematous enteropathy was found in 11 hogs of 159, 036 inspected at the municipal abattoir in Hiroshima over a period of May, 1975, to July, 1977. Seven of the 11 hogs had been shipped from the same farm. Lesions were found in the jejunum, ileum, and their mesentery and lymph nodes. There were differences in their severity among individuals. Histopathologically, endothelioid cells covered the inside of the lesion, which was surrounded by fibrous tissue containing many infiltrating cells. These cells consisted of histiocytes, lymphocytes, eosinophils, and rarely polynuclear giant cells.
Spores ofBacillus larvaewere destroyed effectively by disinfection with gas containing 10 or 27% of ethylene oxide (EO) for 12 hours. The disinfection was more effective at 50°C than at 30 or 40°C. When the frame of the beehive was disinfected under the same conditions as the spores, the residual EO gas decreased rapidly with the lapse of time, being undetectable 7-14 days later. The higher the EO concentration used, the longer the duration of disinfection, and the higher the temperature of application, the larger the amount of residual EO gas in the frame. EO gas seemed to be available for the prevention of foul brood when the concentration of the gas and the temperature and duration of disinfection were combined efficiently and adequate after-treatment was performed.
Catheterization after thoracic puncture was more useful for drainage and washing every or every other day when performed on both sides than when conducted on the right side alone. A silicon catheter was efficient enough to drain almost perfectly, although it came off in a week or two. A balloon catheter remained in a fixed position for a long time, although it removed only 70-80% of the effused fluid. This technique was applicable to hydrothorax and pyothorax in cats with success.