Bovine respiratory syncytial virus seroprevalence and risk factors in endemic dairy cattle herds
作者： Camilla Luzzago , Valerio Bronzo , Stefano Salvetti , Michela Frigerio , Nicola Ferrari
DOI: 10.1007/S11259-009-9327-Z
关键词:
摘要: The herd seroprevalence of bovine respiratory syncytial virus (BRSV) was studied in 59 dairy cattle herds using serology on random selected animals stratified by two age classes (heifers, cows). Risk factors for primary infections heifers were investigated a questionnaire management conditions and data viral diarrhoea (BVD) status. At least one seropositive cow present all the herds. In 25% individual 22% had seronegative. Analysis influence risk retained summer pasture BVD particular, absence positive status associated with an increased BRSV infection group.
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