There were six new BSE cases in the Republic this week, bringing the total for the year to date to 147.
The six cases were on dairy farms in counties Limerick, Monaghan, Wexford, Kilkenny (2), and Mayo. The infected cows were between six and nine-years-old.
A spokesperson for the Department of Agriculture, Food and Rural Development said all six cases were identified under the increased active surveillance programme.
"The number of cases disclosed to date should be considered in the context of a total cattle population of 7.6 million. To date no animals born after 1996 have been detected with BSE and an ever increasing proportion of infected animals are six years of age or older," the spokesperson said.