Erradicação do herpesvírus bovino - 1 (BHV-1) de um rebanho bovino leiteiro em manejo semi-intensivo

Pesquisa Veterinária Brasileira

Claudia Del Fava²  Eliana De Stefano¹  Edviges Maristela Pituco¹  Maria Cristina V. Bilynskyj¹  Líria Hiromi Okuda¹  Claudia Rodrigues Pozzi²  Cecília José Veríssimo²  João J. A. Abreu Demarchi² 

[1] ,Instituto de ZootecniaNova Odessa SP

关键词: Eradication;    BHV-1;    dairy cattle;    Erradicação;    BHV-1;    bovinos leiteiros;   

DOI  :  10.1590/S0100-736X1998000200005

来源: SciELO

【 摘 要 】

To eradicate the BHV-1 from a dairy cattle herd without vaccination, a preliminary serological survey was performed in 154 animals, that revealed 15.6% seropositives for BHV-1. The test used was serum neutralization with the microtitration technique. The seropositive nonpregnant cows were immediately eliminated from the herd and the pregnant cows were isolated and eliminated after parturiation. The calves with colostral antibodies were kept in the herd. There were no seropositive animals between the 6 to 12 months old calves and the heifers. The animals were monitored serologically every 3 months for 21 months and afterwords in 2 semestral intervals. The seropositive nonpregnant, pregnant and the nursing cows were the source of BHV-1 infecction. In order to maintain a BHV-1 free herd, measurements of control had been taken, as the utilization of virus-free semen, quarantine when animals were introduced into the herd, and semestral serological surveys. Through these measurements the farm has been BHV-1 free for 18 months.

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