Key messages

  • Pregnancy rate = Submission rate x Conception rate
  • Achieving good submission rates requires uterine involution, resumption of oestrous cycles and good detection of oestrous behaviour.
  • Achieving good conception rates requires appropriate timing of AI, and may be affected by semen quality or handling, cow factors and inseminator technique.
  • For good reproductive management, carry out pre breeding heat detection and focus veterinary effort on those cows not seen in heat by day 42.

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