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This study involved 64 Holstein-sired crossbreds, 64 Brown Swiss-sired cross-breds, and 20 daughters of crossbred sires. These were compared to contemporary Holsteins. The females were sired by 24 Holstein and 18 Brown Swiss bulls selected from AI studs, and four crossbred sires produced in the herd. The mean deviations of crossbreds from the age-adjusted five-month rolling herd average of contemporary Holsteins were: -86, -498, and -1,173kg of milk for Holstein-sired crosses, Brown Swiss-sired crosses, and daughters of crossbred sires, respectively. The purebred-sired crosses were significantly superior (P |
