A bull designated to be used as a "bench mark" in progeny-testing other bulls (young sires). Progeny by reference sires in several herds enable comparisons to be made between bulls not producing progeny in the same herd.
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A bull designated to be used as a "bench mark" in progeny-testing other bulls (young sires). Progeny by reference sires in several herds enable comparisons to be made between bulls not producing progeny in the same herd.
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