3Julie L K,Lowell M A,Crawford C P,et al.GnRH immunocontraception of male cats.[J]Theriogenology,2004,62:1116-1130.
4Ferroa V,Khana M H,Adama M,et al.Efficacy of an antifertility vaccine based on mammalian gonadotrophin releasing hormone(GnRH Ⅰ)-a histological comparison in male animals[J].Veterinary Imnunology and Immunopathology,2004,101:73-86.
5Susan E,Bunch C Guillermo,Gregory F Grauer,et al.Small Animal Internal Medicine[M].USA:mosby,inc.,1998.700-900.
6Davies C,Linda,Lawrence T,Shell I Common Small Animal Diagnoses[M].Saunders W.B.C,2002.208-211.
