The Irish Cattle Breeding Federation (ICBF) reports a slight decrease in the fertility performance of the national dairy herd. The average calving interval increased by 3 days from 387 days in 2018, to 390 days in 2019. During the 2019 period there was 0.91 calves/cow/year, this is up from 0.90 in 2018. The National Statistics are based on data from 13,902 herds.