A study of fertility and production in low cost production herds.
D000818:Animals; D001947:Breeding; D002417:Cattle; D003612:Dairying; D004467:Economics; D005260:Female; D005298:Fertility; D005308:Fertilizers; D008297:Male; D008892:Milk; D009584:Nitrogen; D010710:Phosphates; D011188:Potassium
D005308:Fertilizers; D010710:Phosphates; D009584:Nitrogen; D011188:Potassium