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AN262: Management of Reproduction in Dairy Herds with Natural Service or Timed Artificial Insemination

Figure 1. Hormonal injections to synchronize ovulation in lactating dairy cows, which allow for timed artificial insemination (AI) without the need for detection of estrus in dairy cows.  GnRH = gonadotropin-releasing hormone; PGF2? = prostaglandin F2?.