2Khurshid A,Farooq M,Durrani F R,et al.Hatching performance of Japanese quails[J].Livestock Research for Rural Development,2004,16(1):556-558.
3Abiola S S,Meshioye O O.The effect of egg size on hatchability[J].Archivos de Zootecnia,2008,23:142-145.
4Elibol O,Brake J.Effect of egg weight and position relative to incubator fan on broiler hatchability and chick quality[J].Poultry Science,2008,87:1913-1918.
5Narushin V G,Romanov M N.Egg physical characteristics and hatchability[J].World's Poultry Science Journal,2002,58:297-302.
6Farooq,Durrani F,Aleem M,et al.Egg traits and hatching performance of Desi,Fayumi and Rhode island red chicken[J].Pakistan Journal of Biological Sciences,2001,4(7):909-911.
7Roque L,Soares M C.Effects of eggshell quality and broiler breeder age on hatchability[J].Poultry Science,1994,73(12):1838-1845.
8Carlyle D,Bennett.The influence of shell thickness on hatchability in commercial broiler breeder flocks[J].Journal of Applied Poultry Research,1992,1:61-65.