6Ott S L, Wells S L, Wagner B A. Herd-level economic losses associated with Johne's disease on US dairy operations [J]. Pre Vet Med, 1999, 40(3-4): 179-192.
7Harris N B, Barletta R G. Mycobacterium avium subsp, paratuberculosis in Veterinary Medicine [J]. Clin Microbiol Rev, 2001, 14(3): 489-512.
8Nettles V F, Quist C F, Lopez R R, et al. Morbidity and mortality factors in Key deer (Odocoileus virginianus clavium) [J]. Journal of Wildlife Disease, 2002, 38(4): 685-692.
9Godfroid J, Boelaert F, Heier A. First evidence of Johne's disease in fanned red deer (cervus elaphus) in Belgium [J]. Vet Microbiol, 2000, 77(3-4): 283-290.
10Rodrick J chiodini. Eastern white-tailed dear as a reservoir of ruminant paratuberculosis [J]. Journal of American Veterinary Medicine Association, 1983, 182(2): 168-169.