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Use "oestral" in a sentence
"Percival, too, mentions at some length the effect of the removal of pain on the oestral and generative functions, quoting a case of a brood cart-mare by reason of bony deposits being stayed from breeding for some years."
"It had been observed that if the doe were withheld from the buck at oestral periods atrophy of the ovary took place."
""It is a remarkable fact, in this connection, that the female of these animals will allow the approaches of the male only during and immediately after the oestral period; that is, just when the egg is recently discharged, and ready for impregnation."