Effect of supplemental vitamin A on the performance of beef cows and their calves.
D000367:Age Factors; D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001947:Breeding; D002338:Carotenoids / Q000032:analysis*; D002417:Cattle / Q000502:physiology*; D005260:Female; D005298:Fertility; D007774:Lactation; D008099:Liver / Q000378:metabolism*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012098:Reproduction; D012621:Seasons; D014801:Vitamin A / Q000032:analysis* / Q000378:metabolism*
D014801:Vitamin A; D002338:Carotenoids