Bone parameters of thick and thin eggshell lines of chickens.
Comparative measurements of bone parameters were made on chickens from thick and thin eggshell lines that were maintained on a normal diet containing 3.5% calcium, injected i.v. with 45CaCl2 and sacrificed 30 min later. There were no significant differences between shell lines for the following measurements on the left femur: specific gravity, ash wt, total calcium, percent calcium and 45Ca content. There was deposition of 45Ca in the femur of all hens--even those in the process of eggshell formation. Skeletal metabolism was not a limiting factor in determining whether a hen produced a thick or thin eggshell.
D000818:Animals; D001835:Body Weight; D001842:Bone and Bones / Q000032:analysis* / Q000378:metabolism; D002118:Calcium / Q000032:analysis; D002122:Calcium Chloride / Q000378:metabolism; D002645:Chickens; D004528:Egg Shell / Q000032:analysis*; D005260:Female; D013997:Time Factors
D002122:Calcium Chloride; D002118:Calcium