Case Study: Reduction in Bulk Tank Somatic Cell Count on a Commercial Dairy Associated With Use of a Streptococcus uberis Bacterm

摘要

Streptococcus uberis is one of the most prevalent mastitis pathogens on U.S. dairies (Roberson, et al., 2010). Because the organism can be contagious and generally has an environmental reservoir, existing management methods can be inadequate (Zadoks,2003; Leigh, 1999). Additionally, S. uberis mastitis can be refractive to antibiotic treatment (Cattell, 1996; Milne, et al, 2005). We were interested in the potential effect vaccinating the entire milking herd (450 cows) with a Streptococcus uberis bacterin might have upon bulk tank somatic cell counts (BTSCC) in a commercial setting.