|
|
| KADOHIRA, Mutsuyo; TAJIMA, Motoshi; 門平, 睦代. |
| The Betsukai town office implemented bovine viral diarrhea virus (BVDV) preventive activities (i.e., vaccination and surveillance) in 2006. Using bulk tank milk screening followed by individual blood tests using a Reverse Transcription-Polymerase Chain Reaction (RT-PCR) method, persistent infection (PI) cattle were detected and eliminated from the population. Based on data for PI cattle detected between 2006 and 2007, we conducted a case control study to find risk factors associated with the presence of PI cattle. Significantly associated farm level factors for increasing risk of producing PI cattle include; 1) no recent purchase of cattle (between 2004 and 2007) and 2) no prevention of people/animals entering the premises. This study suggests that not... |
|
Palavras-chave: Biosecurity; BVDV infection; Case control study; Hokkaido/Japan. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4126 |
| |
