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Reproductive performance and fetal growth was determined in GnRH (4μg synthetic GnRH agonist, Receptal) administered (i.m.) to ewes on day 12 post-mating (n=103) compared to control ewes (n=97) during the breeding season. Plasma progesterone and LH concentrations were analyzed. A total of 13 ewes was slaughtered on day 45 of pregnancy (six from control, seven from GnRH treated groups). GnRH administration...