Some relationships of body weight and age with first-lactation yield.
D000375:Aging; D000818:Animals; D001835:Body Weight; D002417:Cattle; D005223:Fats / Q000032:analysis; D005260:Female; D007774:Lactation; D008892:Milk; D011247:Pregnancy; D011270:Pregnancy, Animal
D005223:Fats