As NMR pulls together data for its 1996/7 Annual Report, product manager Mike Blanshard reviews the latest trends in herd fertility and the financial benefits reaped by those dairy farmers achieving above-average results. Calving interval remains an important benchmark for many commercial dairy herds. While it is difficult to hit the magical 365 days with today's high performance cows, this should not be used as an excuse. Income from increased milk yields have to be offset by losses incurred from an extended calving interval.
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