- Pre dipping inhibits non-contagious orgnsm like Ecoli, enterococcus and Streptococcus
- Post dipping inhibits contagious orgnsms like Strep agalactiae
- The correct answer is Escherichia coli. This is an environmental contaminant and not a contagious organism. Pre-milking teat dips are useful for preventing such noncontagious diseases as E. coli, Enterococcus, and Streptococcus sp. other than S. agalactiae. Post-milking teat dips help prevent the spread of contagious pathogens such as Strep agalactiae from the skin into the streak canal and gland