%0 Journal Article %T Beak necrosis in broiler breeder roosters %A Razmyar, Jamshid %A O. Dezfulian %A R. Akbarian %A A. Tolu %A H. Nikpiran %A M. Peighambari %J Journal of Veterinary Research - تحقیقات دامپزشکی %@ 2008-2525 %D 2007