Variation in lactation yield of milk constituents.
D000818:Animals; D001947:Breeding; D002417:Cattle; D004777:Environment; D005223:Fats / Q000032:analysis; D005260:Female; D007774:Lactation / Q000502:physiology*; D008892:Milk / Q000032:analysis*; D011247:Pregnancy; D012621:Seasons
D005223:Fats