Table 3
Median lactation survival time (year) for cows by hair coat color (mean ± SE)

Farm A		Farm B
Hair coat	Years	Hair coat	Years
Black	5.06 + 0.16	Black	3.04 ± 0.14
Black/White	4.98 + 0.13	Black/White	2.97 ± 0.06
White	4.76 + 0.15	White	2.82 ± 0.09