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estrus |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.07 sec. |
estrusPeriod in the sexual cycle of female mammals, except the higher primates, during which they are in heat (ready to accept a male for mating). Some animals (e.g., dogs) have only one heat during a breeding season; others (e.g., ground squirrels) will come into heat repeatedly during the breeding season until impregnated. During estrus the female secretes pheromones that signal her receptivity to the males; her genital area may become swollen, and she may also give behavioral signals. |
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Artificial Insemination (AI) and estrus synchronization are pushing beef producers Terry Slusher of Floyd, Va. Many parts of it read like pages from the hospital records of a delicate, but very disturbed patient: N was repeatedly knocked prostrate by changes in the weather, by too-bright sunshine and thunderstorms, by the sirocco in southern Italy and freezing rain in Switzerland, by airless, low-ceilinged rooms and primitive railroad cars, by publishing snafus and lost luggage, by the estrus of composition and the wall of incomprehension it ran into. Ovariectomized steroid-primed Sprague-Dawley female rats were used as stimulus animals and were brought into behavioral estrus by a subcutaneous priming injection of 2 [micro]g estradiol benzoate in sesame oil 48 hr before receiving 100 [micro]g progesterone (subcutaneously), as previously described (Markaverich et al. |
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estrus
