Effect of level and source of phosphorus and different calcium levels on productivity and phosphorus utilization by laying hens.
D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002645:Chickens / Q000378:metabolism*; D004531:Eggs; D005260:Female; D010758:Phosphorus / Q000378:metabolism*
D010758:Phosphorus; D002118:Calcium