title: Factors affecting the butterfat content of cows' milk.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001947:Breeding; D002417:Cattle / Q000378:metabolism* / Q000502:physiology; D005223:Fats / Q000032:analysis*; D005260:Female; D007774:Lactation; D008414:Mastitis, Bovine / Q000378:metabolism; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D012621:Seasons; D013997:Time Factors
chemical_list: D005223:Fats