The effect of time of sampling in relation to time of suckling on milk progesterone levels in beef cows.
D000818:Animals; D002417:Cattle / Q000502:physiology; D005260:Female; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis*; D013048:Specimen Handling / Q000662:veterinary*; D013391:Sucking Behavior; D013997:Time Factors
D011374:Progesterone