The heritability of maximum flow was 0,44±0,06, on average flow it was 0,36±0,05 and on milking duration it was 0,30±0,05.
Arfgengi á hámarksflæði reyndist vera 0,44±0,06, á meðalflæði var það 0,36±0,05 og 0,30±0,05 á mjaltatímanum.