Beer, M. de and Coon, C. (2009) “The Effect of Different Feed Restriction Programs and Dietary L-Carnitine Supplementation on Hepatic Lipogenesis, Plasma Heterophil to Lymphocyte Ratio and Yolk IgY Content of Broiler Breeder Hens”, International Journal of Poultry Science, 8(4), pp. 328–341. doi:10.3923/ijps.2009.328.341.