Comparison of the effects of tylosin and tilmicosin as a systemic treatment of dry Holstein cows.

The aim of the present study was to evaluate the efficacy of macrolides to eliminate intramammary infection (IMI) caused by () and . 3 weeks before calving time. Eighty Holstein dairy cows with subclinical mastitis pathogens were divided into three groups.

Comparison of virulence factors and capsular types of Streptococcus agalactiae isolated from human and bovine infections.

Streptococcus agalactiae is a leading cause of human and bovine infections. A total of 194 S. agalactiae isolates, 55 isolates from bovines and 139 from humans, were analyzed for capsular types, virulence genes (scpB, hly, rib, bca and bac) and mobile genetic elements (IS1548 and GBSi1) using polymerase chain reaction (PCR) and multiplex PCR.