title: Protein requirement of laying Japanese quail.
abstract: 1. Two feeding experiments were conducted to determine the crude protein requirement of laying Japanese quail. Birds were fed to provide 293 kJ ME and 2, 3, 4, 5, 6 or 7 g protein/d. 2. As protein intake increased from 2 to 5 g egg production increased. 3. Quadratic relationships between protein intake and egg production and protein intake and egg weight were derived. 4. To maintain a production of 90 eggs/100 bird d and an egg weight of 9.3 g required 4.9 g protein and approximately 264 kJ ME/d.
mesh_terms: D000818:Animals; D001835:Body Weight; D003370:Coturnix / Q000378:metabolism* / Q000502:physiology; D004044:Dietary Proteins / Q000378:metabolism*; D004531:Eggs; D004734:Energy Metabolism; D005260:Female; D009751:Nutritional Requirements; D010058:Oviposition; D011784:Quail / Q000378:metabolism*
chemical_list: D004044:Dietary Proteins