The IFA wants the Agriculture Minister to immediately move to have BTV 3 vaccines licensed and available for use.
It's due to the outbreak of Bluetongue disease in two cows north of the border near Bangor in County Down.
A 20 kilometre temporary control zone has been brought in due to the disease which is spread by infected biting midges.
It doesn't pose a risk to human health, but can be devastating to herds.
Roscommon IFA Chairperson, Pat Leonard, has this advice for farmers:
Leitrim councillor and farmer, James Gilmartin, says it's the biggest concern to Irish farming since the foot and mouth crisis in 2001: