However, according to Animal Heath Ireland, while once-a-day milking does not of itself appear to significantly increase the incidence of intramammary infection, it can increase the SCC of individual cows and thus the bulk tank SCC.

It says high SCC cows should not be ignored –a plan of action should be in place to deal with them, before they infect clean cows in the herd, and increase bulk tank SCC.

According to the AHI these are the best options for dealing with these high SCC cows:

1. Reduce their risk of spreading infection

2. Cure any existing infections

While this may appear to be the most logical option, remember that cure rates can range from 20-80% depending on various factors. Consider the following questions before reaching for that treatment:

3. Remove the source of infection

Be aware: