Conception rates to a single first insemination in cycling dairy cows often range between 55% and 75% . This paper outlines the physiological processes that define this outcome and where possible gains could be made. While herd management issues do influence the outcome of a reproduction progamme quite significantly, the main impetus of this review is to identify some opportunities that could raise the threshold level of fertility in New Zealand dairy herds.
Proceedings of the New Zealand Society of Animal Production, Volume 56, , 355-357, 1996
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