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Table 1 Percentages of ewes that showed estrus, length of interval to estrus onset, and ovulation and conception rates in cyclic ewes primed with intravaginal sponges containing 60 mg of MAP for 12 days. While Control ewes remained near rams during all the period before joining, ram effect ewes remained isolated from rams during that period (Experiment 1).

From: Endocrine and Ovarian Changes in Response to the Ram Effect in Medroxyprogesterone Acetate-primed Corriedale Ewes During the Breeding and Nonbreeding Season

Group Estrous ewes no. (%) Interval to estrus onset (h) Ovulation rate Conception rate no. (%)
Control 34/35 (97.1) 51.0 ± 5.4 1.1 ± 0.3 26/34 (76.5)
Ram effect 32/36 (88.9) 52.5 ± 3.9 1.1 ± 0.3 28/32 (87.5)
  1. C = control group; RE = ram effect group.