Fertility of the selected ewes as a function of the flock fertility at first mating. Data represent the predictive positive values (PPV, open circles). PPV values were calculated using the sensitivity and specificity corresponding to the cutoff point (plasma AMH ≥ 97 pg/mL; Se: 68.2%; Sp: 72.2%). The closed circle shows the PPV value corresponding to flock fertility at the first mating in the present study (28.9%). A test without capacity of discrimination (random test) is represented as a dashed line. The arrow shows the increase in fertility obtained in the present work by selecting ewes with AMH ≥ 97 pg/mL.