Effect of Egg Weight and egg Shell Thickness on Hatchability and Embryonic Mortality of Cobb Broiler Breeder Eggs Journal title: Global Journal of Animal Scientific Research Authors: Huwaida E.E. Malik, Ahmed I.Y. Sakin, Hind A.A. Elagib, Bakhiet M. Dousa, Khalid M. Elamin Subject(s): Psychology, Animal Behavior, Genetics, Nutrition and Metabolism