Knowledge Title: Love and ovulation Other Title: oestrus and ovulation Knowledge Content:  The two physiological phenomena of mother animals are closely related to each other. Narrow-sense sentiment usually refers to the periodic expression of sexual maturity of the mother and animal stoicandand and the special changes in the vulva, commonly known as “bar”, “ring” or “picket” (horse, donkey) and so on. In a broad sense, or complete period of love, it includes ovulation, showing three physiological changes: mental excitement, strong mating desire; These changes are physiological preparations for mating, fertilization and pregnancy. Normal development is an important factor in the breeding of female animals. Sometimes livestock will not be accompanied by ovulation abnormal feelings, at this time the mother animals even if they accept mating, can not achieve the purpose of reproduction. Sometimes the mother animal will also appear quiet, that is, do not appear any appearance of emotional signs and ovulation, because not easy to detect, often miss the opportunity to breed.……

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