Milk (kg day−1 : B1 = 27.2, B2 = 26.1 and B3 = 25.9) and energy corrected milk (ECM; kg day−1 : B1 = 31.0, B2 = 29.4 and B3 = 28.2) yields, and protein concentration (g kg−1 : B1 = 37.1, B2 = 36.4 and B3 = 36.0) decreased with increasing maturity stage of the WCBS.