1. Elibol, O. and J. Brake. 2004. Identification of critical periods for turning broiler hatching eggs during incubation. British Poultry Science, 45(5): 631-637. [
DOI:10.1080/00071660400006271]
2. Elibol, O. and J. Brake, 2006. Effect of egg turning angle and frequency during incubation on hatchability and incidence of unhatched broiler embryos with head in the small end of the egg. Poultry Science, 85(8): 1433-1437. [
DOI:10.1093/ps/85.8.1433]
3. Elibol, O. and J. Brake, 2008. Effect of egg position during three and fourteen days of storage and turning frequency during subsequent incubation on hatchability of broiler hatching eggs. Poultry Science, 87(6): 1237-1241. [
DOI:10.3382/ps.2007-00469]
4. FAO. Animal production and health paper 89 (by Dr. V. Palya Phylaxia Vet. Biol. Com. Budapest, Hungary). pp: 10-56.
5. Kun-Ming, M., M. Ayako, I. Atsuhi and Y. Norio. 2007. The asymmetry of avian egg-shape: an adaption for reproduction on dry land. Journal of Anatomy, 210(6): 741-748. [
DOI:10.1111/j.1469-7580.2007.00737.x]
6. Moraes, T.G.V., J.M. Romao, R.S.C. Teixeira and W.M. Cardoso. 2008. Effects of egg position in artifificial incubation of Japanese quail eggs (Coturnix Japonica). Animal Reproduction, 5(1-2): 50-54.
7. North, M.O. and D.D. Bell, 1990. Commercial chicken production manual, 4th ed. (New York, NY, Van Nostrand Reinhold Press), pp: 42-49.
8. OIE (The World Organisation for Animal Health). 2011. Manual of diagnostic tests and vaccines for terrestrial animals. Chapter 2.3.4. pp: 465-481. In: Avian Influenza, 6th ed. Office International des Epizooties, Paris, France.
9. Pashmi, M. and S. Moradi. 2010. Buildings, facilities and equipment for poultry farming. Agricultural, Research, Education and Extension Organization Press: 219-230 (In Persian).
10. Poorreza, J. and G. Sadeghi, 2008. Poultry management. Arkane Danesh Press: 101-121 (In Persian).
11. Proudfoot, F.G. 1967. Advance note on the hatchability of chicken eggs stored small end up. Canadian Journal of Animal Science, 47: 142-143. [
DOI:10.4141/cjas67-022]
12. Reed, L.J. and H. Muench. 1938. A simple method of estimating fifty percent endpoints. American Journal of Hygiene, 27(3): 493-497. [
DOI:10.1093/oxfordjournals.aje.a118408]
13. Saki, A.A., M. Haghi and E. Rahmatnejad. 2014. The effect of various levels of dietary protein and methionine on the laying hen's performance and egg characteristics in late laying cycle. Research on Animal Production, 5(10): 13-25.
14. Sally, E.G. 2002. A basic laboratory manual for the small-scale production and testing of I-2 newcastle disease vaccine: 44-49.
15. Soroush, Z., S. Salari, M. Sari, J. Fayazi and S. Tabatabaii. 2015. Effects of different levels of zinc on performance, egg quality traits and some blood parameters of laying hens. Research on Animal Production, 6(11): 19-27.
16. Tiwari, A.K.R. and T. Maeda. 2005. Effects of egg storage position and injection of solutions in stored eggs on hatchability in chikens (Gallus domesticus): research note. The Journal of Poultry Science, 42(4): 356-362. [
DOI:10.2141/jpsa.42.356]
17. Wilson, H.R., S.L. Neuman, A.R. Eldred and F.B. Mather. 2003. Embryonic malpositions in broiler chickens and bobwhite quail. The Journal of Applied Poultry Research, 12: 14-23. [
DOI:10.1093/japr/12.1.14]