I would like to use the Oxytocin protocol for my older mares post breeding. As noted, Estrumate can be used for the overnight needle, so for the average size Arabian mare would this dosage be .25ml? Thanks for your help.
You should give 250 µg IM, which will typically equate to 1 ml (check the bottle). You should not however continue with Estrumate treatment greater than 12 hours after ovulation as the drug may interfere with correct CL formation and function. (Troedsson MHT, Ababneh MM, Ohlgren AF, Madill S, Betscher N, Gregas M. Effect of periovulatory prostaglandin F2a on pregnancy rates and luteal function in the mare. Theriogenology 2001;55:1899–981.; Brendemuehl JP. Effect of oxytocin and cloprostenol on luteal formation, function and pregnancy rates in mares. Theriogenology 2002;58:623–6; Nie GJ, Johnson KE, Wenzel JGW, Braden TD. Effect of administering oxytocin or cloprostenol in the periovulatory period on pregnancy outcome and luteal function in mares. Theriogenology 2003;60:1111–8.)
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