SASAKI YOSUKE
   Department   Undergraduate School  , School of Agriculture
   Position   Associate Professor
Language English
Publication Date 2022/05
Type Academic Journal
Title Theileria-free grazing of dairy heifers on grassland in Kyushu, Japan where T. orientalis was epidemic before a 7-year vacancy.
Contribution Type Co-authored (other than first author)
Journal The Journal of veterinary medical science
Journal TypeAnother Country
Volume, Issue, Page 84(5),pp.628-633
Authorship Last author,Corresponding author
Author and coauthor Yuki Fukushima, Tomoya Minamino, Kazuyuki Honkawa, Takako Taniguchi, Yoichiro Horii, Yosuke Sasaki
Details This study aimed to produce a Theileria-free grazing system for Holstein heifers reared on a dairy farm in the Hita area, Kyushu, Japan. In the grazing area, spreading of T. orientalis infection was confirmed in 2009. To eradicate the T. orientalis infection, four measures were conducted: 1) 7-year deferred grazing; 2) grazing only T. orientalis-uninfected heifers; 3) anemia check by red blood cell parameters at least once per month; and 4) protecting heifers from blood-sucking T. orientalis-infected ticks. Grazing was restarted in 2017 in the same area and continued to 2021. During last 2 years of pasturing (2020-2021) all of the 129 heifers were confirmed to be T. orientalis-free. In summary, it is possible to establish a T. orientalis-free grazing system by conducting appropriate measures.
DOI 10.1292/jvms.21-0666
PMID 35354695