[Prevention of vitamin A deficiency and alimentary dystrophy in ducklings].
D000818:Animals; D004372:Ducks; D006128:Growth; D009748:Nutrition Disorders / Q000662:veterinary; D011201:Poultry Diseases / Q000517:prevention & control*; D014802:Vitamin A Deficiency / Q000662:veterinary*
Profilaktika A-gipovitaminoza i alimentarnoĭ distrofii utiat.