Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns
The objective of the present study was to investigate the effects of <i>Theileria orientalis</i> on the severity of anemia, the prevalence of disease within 21 days after calving and productivity in cows raised inside barns. This longitudinal observational study, which was conducted on a...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Pathogens |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-0817/10/6/650 |
| _version_ | 1797532857750519808 |
|---|---|
| author | Yuki Fukushima Tomoya Minamino Yoko Mikurino Kazuyuki Honkawa Yoichiro Horii Takako Taniguchi Hirohisa Mekata Yosuke Sasaki |
| author_facet | Yuki Fukushima Tomoya Minamino Yoko Mikurino Kazuyuki Honkawa Yoichiro Horii Takako Taniguchi Hirohisa Mekata Yosuke Sasaki |
| author_sort | Yuki Fukushima |
| collection | DOAJ |
| description | The objective of the present study was to investigate the effects of <i>Theileria orientalis</i> on the severity of anemia, the prevalence of disease within 21 days after calving and productivity in cows raised inside barns. This longitudinal observational study, which was conducted on a commercial dairy farm in Japan, involved 627 Holstein cows subjected to PCR analysis for <i>T. orientalis</i>. In study 1, we collected blood samples from 156 sick cows within 21 days after calving, and we found the prevalence of <i>T. orientalis</i> infection to be 65.4%. In study 2, we randomly selected 471 cows during the dry period and collected blood samples to conduct PCR analysis for <i>T. orientalis</i> and determined the prevalence of <i>T. orientalis</i> infection to be 69.0%. Compared with the values for the <i>T. orientalis</i>-uninfected group, the <i>T. orientalis</i>-infected cows had significantly decreased hemoglobin concentrations and hematocrit, but there were no differences in the other complete blood count indexes between the two groups. In addition, there were no differences in productivity and the prevalence of major diseases between the <i>T. orientalis</i>-infected and uninfected cows. In summary, <i>T. orientalis</i> had few effects on anemia, productivity and the health of cows raised inside a barn. |
| first_indexed | 2024-03-10T11:06:19Z |
| format | Article |
| id | doaj.art-58cbf50cde904caca739107258e1b788 |
| institution | Directory Open Access Journal |
| issn | 2076-0817 |
| language | English |
| last_indexed | 2024-03-10T11:06:19Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Pathogens |
| spelling | doaj.art-58cbf50cde904caca739107258e1b7882023-11-21T21:09:14ZengMDPI AGPathogens2076-08172021-05-0110665010.3390/pathogens10060650Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside BarnsYuki Fukushima0Tomoya Minamino1Yoko Mikurino2Kazuyuki Honkawa3Yoichiro Horii4Takako Taniguchi5Hirohisa Mekata6Yosuke Sasaki7Course of Animal and Grassland Sciences, Graduate School of Agriculture, University of Miyazaki, Miyazaki 889-2192, JapanHonkawa Ranch, Oita 877-0056, JapanHonkawa Ranch, Oita 877-0056, JapanHonkawa Ranch, Oita 877-0056, JapanHonkawa Ranch, Oita 877-0056, JapanCenter for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, JapanCenter for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, JapanCenter for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, JapanThe objective of the present study was to investigate the effects of <i>Theileria orientalis</i> on the severity of anemia, the prevalence of disease within 21 days after calving and productivity in cows raised inside barns. This longitudinal observational study, which was conducted on a commercial dairy farm in Japan, involved 627 Holstein cows subjected to PCR analysis for <i>T. orientalis</i>. In study 1, we collected blood samples from 156 sick cows within 21 days after calving, and we found the prevalence of <i>T. orientalis</i> infection to be 65.4%. In study 2, we randomly selected 471 cows during the dry period and collected blood samples to conduct PCR analysis for <i>T. orientalis</i> and determined the prevalence of <i>T. orientalis</i> infection to be 69.0%. Compared with the values for the <i>T. orientalis</i>-uninfected group, the <i>T. orientalis</i>-infected cows had significantly decreased hemoglobin concentrations and hematocrit, but there were no differences in the other complete blood count indexes between the two groups. In addition, there were no differences in productivity and the prevalence of major diseases between the <i>T. orientalis</i>-infected and uninfected cows. In summary, <i>T. orientalis</i> had few effects on anemia, productivity and the health of cows raised inside a barn.https://www.mdpi.com/2076-0817/10/6/650epidemiologyhealth statusproductivity<i>Theileria orientalis</i> infection |
| spellingShingle | Yuki Fukushima Tomoya Minamino Yoko Mikurino Kazuyuki Honkawa Yoichiro Horii Takako Taniguchi Hirohisa Mekata Yosuke Sasaki Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns Pathogens epidemiology health status productivity <i>Theileria orientalis</i> infection |
| title | Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns |
| title_full | Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns |
| title_fullStr | Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns |
| title_full_unstemmed | Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns |
| title_short | Effects of <i>Theileria orientalis</i> Infection on Health Status and Productivity of Dairy Cows Reared inside Barns |
| title_sort | effects of i theileria orientalis i infection on health status and productivity of dairy cows reared inside barns |
| topic | epidemiology health status productivity <i>Theileria orientalis</i> infection |
| url | https://www.mdpi.com/2076-0817/10/6/650 |
| work_keys_str_mv | AT yukifukushima effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT tomoyaminamino effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT yokomikurino effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT kazuyukihonkawa effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT yoichirohorii effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT takakotaniguchi effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT hirohisamekata effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns AT yosukesasaki effectsofitheileriaorientalisiinfectiononhealthstatusandproductivityofdairycowsrearedinsidebarns |