Myodil was directly injected into the lymphatic vessels of the pelvic limbs in healthy adult mongrel dogs (0.2ml/kg). Lymphangiograms with Myodil showed essentially the same pictures of lymph nodes and lymphatic vessels as those with Lipiodol Ultra-Fluide. They were proved to be useful for the diagnostic roentgenologic examination of the lymphatic system. Myodil was excreted more rapidly in this system than Lipiodol Ultra-Fluide. There was a difference in the rate of excretion between the two. A prominent pulmonary embolism was observed immediately after intralymphatic injection with the contrast medium.
Five sporadic or enzootic outbreaks of salmonellosis were reported in dairy cows on 5 farms in the Tokachi district of Hokkaido over a period from 1978 to 1980. The disease had been prevalent among male fattening dairy calves in this district. It was caused bySalmonella typhimurium subserovar copenhagen.Clinical cases in each outbreak were associated with the Downer cow syndrome, mastitis, or infection with RS virus or Coronavirus. In an enzootic of salmonellosis on a dairy farm, contact infection among cattle and environmental contamination with Salmonella were confirmed by cultural and serological procedures. Biovars ofS. typhimuriumisolated from cows and calves in the district were useful markers to clarify the epizootiological relationship of salmonellosis between cows and calves. All the strains ofS. typhimuriumisolated from cows and calves over the 3 years's period were resistant to one or more antimicrobial agents. An increase in the multiplicity of resistance pattern was recognized more frequently in the calf strains than in the cow strains. It may be related to the widespread use of particular drugs, including oxocilic acid, in calves. Salmonella strains with resistance to 7 drugs (AB-PC, OTC, CP, DSM, SDM, KM, and NA) were isolated from calves in this district in and after 1979.
In October, 1979, poisoning of rolled barley contaminated with compound insecticide of MEP (dimethyl-4-nitro-m-tolyl phosphorothionate) and BPMC (O-sec-butylphenyl methylcarbamate) occurred to pigs on a farm. Of 5 sows, 4 died an acute death. Toxicological analysis revealed MEP in rolled barley (4.303 ppm), the remaining fodder in the trough (0.005 ppm), and the gastric contents (0.066 ppm), and BPMC in rolled barley (0.061 ppm) and the gastric contents (0.106 ppm). Characteristic signs manifested were queer voice, staggering hind quarters, attitude back curation and fever. Histopathologically, hyperemia of the brain, hyperemia or congestion of lung, liver and kidney, hyperemia and degeneration of the mucosal epithelium of stomach and small intestine. Bacteriological findings were negative.
Ayoung cow was inoculated orally with 2.7×106sporocysts ofSarcocystis cruziwhich had been collected from canine feces and stored at 4°C for about 18 months. A peak of fever was observed 15 and 26 days after inoculation. Pulse and respiratory rates increased and appetite was lost in the second febrile stage. The cow was killed for examination 29 days after inoculation. A large number of petechiae were found in almost all its organs. Merozoites were detected in the physiological saline suspensions of lung, thymus, liver, mesenteric lymph nodes and adrenal gland each. Histologically, schizonts were observed in the cerebellum, lung, hilar lymph node, thymus, rumen, abomasum, small intestine, rectum, liver, kidney, adrenal gland, uterus and heart. They were7 to 25 by 5 to 17.5μm in size, averaging 14.9 by 9.3μm (N=44).Sarcocystis cruziwasfound to be highly pathogenic to cattle also in Japan.
Urethroperineal syringoplasty using the preputial mucous membrane was performed on 4 male cats suffering from severe urethrophraxis to prevent the postoperative recurrence of this disorder or stenosisof the urinary meatus. In it, the penile urethra was used as the opening of the urethra, and the preputial mucous membrane sutured all around it. All the cats took a satisfactory postoperative course, remaining free from stenosis, and obstruction of the urethra or dermatitis due to urinary deposition. No urethrophraxis occurred even when crystalluria and cystitis had a relapse.
Total anomalous pulmonary venous connection was observed in a 24-day-old Japanese black calf. Tachypnea and mild cyanosis were present at rest. A moderate systolic mumur was detected on the right sideof the thorax. Thoracic radiographs revealed a marked cardiac enlargement, and the ECG a prolongation of PQ interval. Neutrophilia with a shift to the left and elevated BUN, SGOT and SGPT values wereindicated. At necropsy, the thoracic cavity contained a considerable amount of clear fluid. Atelectasis and mild catarrhal pneumonia, congestion of the central veins and centrilobular fatty degeneration of the liver and anemic infarction of the kidney were observed. All the pulmonary veins wereconnected with the left azygous vein to form common trunk which drained into the right atrium via the coronary sinus. The right atrium and ventricle were greatly dilated. Both ventricles had thin walls and muscle layers showing interstitial edema and vacuolation of cardiac muscle fibers. The foramenovale was patent, but the ductus arteriosus was found closed.