title: L-aspartic acid and urea supplementation of low-protein layer diets.
abstract: 1. Urea supplementation of low-protein (125 g/kg) conventional-type diets for layers, whether containing fish meal or not, did not appear advantageous. 2. Supplementation of the low-protein diet with aspartic acid did not affect egg production rate of efficiency. 3. Soyabean meal supplementation of the low-protein diet increased egg weight significantly whereas aspartic acid did not.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001224:Aspartic Acid / Q000378:metabolism*; D002645:Chickens / Q000378:metabolism* / Q000502:physiology; D004044:Dietary Proteins / Q000378:metabolism*; D004531:Eggs; D005260:Female; D010058:Oviposition; D013025:Glycine max; D014508:Urea / Q000378:metabolism*
chemical_list: D004044:Dietary Proteins; D001224:Aspartic Acid; D014508:Urea