Effects of supplementing laying rations with certain B-complex vitamins.
D002794:Choline / Q000494:pharmacology*; D004531:Eggs; D009539:Nicotinic Acids / Q000494:pharmacology*; D010205:Pantothenic Acid / Q000494:pharmacology*; D012256:Riboflavin / Q000494:pharmacology*
D009539:Nicotinic Acids; D010205:Pantothenic Acid; D002794:Choline; D012256:Riboflavin