UC Dublin veterinary school?

I want to go to UC Dublin for veterinary school. However I am from the states. Can I go for the same 5 year course for veterinary straight after graduating from high school when I am 18, or do I have to get a 4 yr degree in the states and go to their 4 yr graduate program? If I go to Dublin, could I start at 18 and be a vet in 5 years?