Hajkhodadadi, Iman, Saeed Khalaji, and Amir Hosein khaltabadi farahani. “Comparison of Different Chicken Egg Parameters in Young and Old Cobb Boiler Breeders”. Scientific Journal of Animal Science 3, no. 8 (August 25, 2014): 213-218. Accessed November 24, 2024. http://sjournals.com/index.php/sjas/article/view/823.