title: Components of a herd calving interval.
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D004971:Estrus; D005260:Female; D005306:Fertilization; D007315:Insemination, Artificial / Q000662:veterinary; D011247:Pregnancy; D011270:Pregnancy, Animal; D013997:Time Factors