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"Experientia docet" - Experience is the best teacher

The synchronisation of oestrus in sheep. 1. Dosage and time of prostaglandin administration following progestagen pretreatment

  • 1979
  • Issue: 3
  • Volume: 9
J.P.C. Greyling, J.M. van der Westhuizen and C.H. van Niekerk Page: 185 - 192

In order to overcome the refractory period of the ovary to c1oprostenol (ICI 80996) treatment (prior to day 4 and subsequent to day 14 of the oestrous cycle), ewes were treated with intravaginal progestagen sponges for eight days and injected…

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Synchronization of oestrus in the Boer goat doe: The response to the use of intravaginal progestagen and PMSG

  • 1985
  • Issue: 2
  • Volume: 15
J.P.C. Greyling, C.H. van Niekerk & J.A.N. Grobbelaar Page: 52 - 55

The effect of different periods (12, 14, 16 or 18 days) of intravaginal progestagen treatment (MAP) and PMSG (300 IU) on synchronization of oestrus in Boer goat does was investigated. No significant difference in oestrous response, follicular activity, ovulation rate,…

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Synchronization of oestrus in sheep: Use of different doses of progestagen outside the normal breeding season (Short communicati

  • 1994
  • Issue: 1
  • Volume: 24
J.P.C. Greyling, W.F. Kotzé, G.J. Taylor, W.J. Hagendijk and F. Cloete Page: 33 - 37

One hundred and thirty Merino ewes were used to test the efficiency of different doses of medroxyprogesterone acetate (MAP) progestagen to synchronize oestrus outside the breeding season. Three treatments, consisting of intravaginal progestagen doses (60 mg, 40 mg, and halved…

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