Babiker, M. et al. 2011. The Effect of Dietary Protein and Energy Levels During the Growing Period of Egg-type Pullets on Internal Egg Characteristics of Phase One of Production in Arid Hot Climate. International Journal of Poultry Science. 10, 9 (Aug. 2011), 697–704. DOI:https://doi.org/10.3923/ijps.2011.697.704.