Vitamin A deficiency in the duck; skeletal growth and the central nervous system.
D000818:Animals; D059001:Aquatic Organisms; D002490:Central Nervous System / Q000473:pathology*; D004372:Ducks; D009141:Musculoskeletal System; D012863:Skeleton; D014802:Vitamin A Deficiency
CENTRAL NERVOUS SYSTEM/pathology; SKELETON; VITAMIN A DEFICIENCY/experimental