Molecular Typing of Streptococcus uberis Strains Isolated from Cases of Bovine Mastitis

摘要

The discriminatory power of two polymerase chain reaction-based DNA fingerprinting methods, random amplified polymorphic DNA and repetitive extragenic palindrome were compared by subtyping 128 isolates of Streptococcus uberis cultured form cows in six different Dairy herds in New Zealand. The typing results demon- Strated that the majority of isolates possessed unique Fingerprint profiles except on occasions where multiple Isolates were obtained from individual cows. On these Occasions, individual quarters of the mammary gland were generally, but not exclusively, infected by the Same strain of bacteira.