The effect of a foreign object in the shell gland on egg production of hens on a calcium-deficient diet.
D000818:Animals; D002118:Calcium; D002645:Chickens; D003677:Deficiency Diseases / Q000662:veterinary*; D004531:Eggs; D005260:Female; D005547:Foreign Bodies / Q000662:veterinary*; D011201:Poultry Diseases; D012098:Reproduction
D002118:Calcium