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Mean ± SEM concentrations of ovarian steroid metabolites during pro-oestrus (days −10 to −1 of the oestrogen peak), oestrus (days 0–6), dioestrus (days 7–93) and anoestrus (days −30 to −11) of the two imported females (A and B) and the native female (C). abcDifferent superscript letters indicate significant differences among reproductive cycles within the same individual for each steroid hormone (P < 0.05).
