Article Text

Plasma progesterone and luteinising hormone levels in cattle after synchronisation of oestrus with dinoprost
  1. A Coulson,
  2. DE Noakes,
  3. T Cockrill and
  4. J Hamer

Abstract

The plasma levels of progesterone and luteinising hormone (LH) were monitored in a group of cattle after pretreatment with two injections of 25 mg dinoprost. Close groupings of preovulatory LH peaks were observed and the possible significance of this is discussed. Based on the findings of this study, supporting evidence is provided for the timing of insemination after injection of cattle which have been synchronised for oestrus with dinoprost.

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