Maiorka, A. et al. 2004. Broiler Breeder Age and Dietary Energy Level on Performance and Pancreas Lipase and Trypsin Activities of 7-days Old Chicks. International Journal of Poultry Science. 3, 3 (Feb. 2004), 234–237. DOI:https://doi.org/10.3923/ijps.2004.234.237.