Babiker, M., Abbas, S., Kijora, C., & Danier, J. (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), 697–704. https://doi.org/10.3923/ijps.2011.697.704