Determination of the onset of parturition in hereford cattle.
D000818:Animals; D001831:Body Temperature; D002417:Cattle; D002584:Cervix Uteri / Q000502:physiology; D004106:Dilatation; D005260:Female; D006339:Heart Rate; D007743:Labor, Obstetric; D008022:Ligaments / Q000502:physiology; D008321:Mammary Glands, Animal / Q000378:metabolism / Q000502:physiology; D011247:Pregnancy; D011270:Pregnancy, Animal; D012119:Respiration; D012445:Sacrococcygeal Region / Q000502:physiology; D013997:Time Factors; D014621:Vagina / Q000378:metabolism; D014844:Vulva / Q000502:physiology