Proportion of Abortions due to Neosporosis among Dairy Cattle in Japan

Journal of Veterinary Medical Science

Kumiko KIMURA¹  Shinya SHIMIZU²  Makoto HARITANI¹  Itsuro YAMANE⁴  Masahiro KOIWAI³  Takafumi HAMAOKA⁵ 

[1]Department of Infectious Diseases, National Institute of Animal Health

[2]Department of Immunology, National Institute of Animal Health

[3]Department of Diagnosis and Research, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries

[4]Department of Epidemiology, National Institute of Animal Health

[5]Shichinohe Research Unit, Department of Epidemiology, National Institute of Animal Health

关键词: abortion;    dairy cattle;    Neospora caninum;   

DOI  :  10.1292/jvms.67.1173

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(16)Cited-By(7)A retrospective cohort study was conducted to clarify the association between seropositive reactions to Neospora caninum and subsequent reproductive disorders among dairy cattle in Japan. A statistically significant association between Neospora seropositive reactions and abortions was observed (P=0.016), and seropositive cattle were 6.1 times more likely to abort compared to seronegative cows. No significant differences were observed between seropositive reactions and other reproductive disorders such as conception failure, perinatal death and calf mortality. As indicated by estimation of the attributable fraction, 83.6% of abortions in Neospora seropositive animals may be attributed to N. caninum. Considering seroprevalence of N. caninum in the cattle which aborted in Japan, 21.8% of abortions were estimated to be caused by neosporosis in Japan.

【 授权许可】

Unknown