Suppurative meningoencephalitis and perineuritis caused by Streptococcus gallolyticus in a Japanese Black calf.

A 179-day-old calf, which was weak and stunted, showed neurological signs and was euthanized. Postmortem examination revealed extensive and severe cloudy area in the meninges, and pleural pneumonia. Gram-positive cocci were isolated from systemic organs.

Striatal necrosis caused by Lichtheimia ramosa in a neonatal calf.

A 12-day-old male calf that did not want breast milk from birth died following neurological signs such as staggering. Postmortem examination revealed bleeding and encephalomalacia in the left striatum and frontal lobe. Histopathologically, necrotic granulomatous encephalitis with numerous fungi was detected.

Genetic characterization and pathogenicity of Japanese porcine deltacoronavirus.

Porcine deltacoronavirus (PDCoV) have recently emerged in several swine producing countries. Our survey found that in addition to porcine epidemic diarrhoea virus (PEDV), PDCoV has also been a causative enteric pathogen of diarrhoeic outbreaks occurring at swine farms around Japan since late 2013. Phylogenetic analysis using the complete genomes of PDCoVs detected in Japan in 2014 demonstrated that the PDCoVs from Japan may be closely related to the PDCoVs from the U.

Pathogenic characteristics of a novel intranuclear coccidia in Japanese black calves and its genetic identification as Eimeria subspherica.

Bovine intranuclear coccidiosis is caused by the protozoans Eimeria alabamensis and Cyclospora spp. Here, we characterized the disease and genetically identified the causative species in Japanese black calves with chronic and refractory watery diarrhea. Histologic examinations revealed atrophy of the jejunal villi and numerous parasites in the nucleus of epithelial cells in the jejunum.

Multifocal suppurative granuloma caused by Actinobacillus lignieresii in the peritoneum of a beef steer.

An imported crossbred Angus beef steer aged eight to twelve months died suddenly on the eighth day of a quarantine period in Japan. Gross examination showed the peritoneum and mesentery consisted of numerous nodules of various sizes. Histological examination revealed chronic suppurative granulomatous peritonitis with eosinophilic rosettes surrounding colonies of Gram-negative bacilli.