Response of Corriedale Ewes to the “Ram Effect” after Priming with Medroxyprogesterone, Fluorogestone, or Progesterone in the Non-Breeding Season
نویسندگان
چکیده
منابع مشابه
Endocrine and Ovarian Changes in Response to the Ram Effect in Medroxyprogesterone Acetate-primed Corriedale Ewes During the Breeding and Nonbreeding Season
Two experiments were performed to determine the endocrine and ovarian changes in medroxyprogesterone acetate (MAP)-primed ewes after ram introduction. Experiment 1 was performed during the mid-breeding season with 71 ewes primed with an intravaginal MAP sponge for 12 days. While the control (C) ewes (n = 35) were in permanent contact with rams, the ram effect (RE) ewes (n = 36) were isolated fo...
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The 'ram effect' induced some seasonally anovular Southdown ewes (23%) to ovulate within 5 days of introducing Southdown rams on 10 December. Priming the ewes with medroxy progesterone acetate from intravaginal sponges for 12 days, immediately before the introduction of the rams, ensured that most of the ewes displayed oestrus at the ram-induced ovulation. The proportion of anovular ewes ovulat...
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ژورنال
عنوان ژورنال: Acta Veterinaria Scandinavica
سال: 1999
ISSN: 1751-0147
DOI: 10.1186/bf03547009