2NCCLS. Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated from Animal [M ]. Second Ed. 940 West Valley Road, Suite 1400,Wayne, Pennsylvania 19087-1898 USA: NCCLS document M31-A2 [ISBN 1-56238-461-9]. NCCLS, 2002: 21 -31.
3Namata H, Welby S, Aerts M, et al. Identification of risk factors for the prevalence and persistence of Salmonella in Belgian broiler chicken flocks [ J ]. Preventive Veterinary Medicine, 2009, 90 (3 -4): 211 -222.
4Ask B, van der Waaij E H, van Eck J H H, et al. Defining susceptibility of broiler chicks to colibacillosis [ J ]. Avian Pathology, 2006, 35 (2) : 147 -151.
5Arshad N, Neubauer C, Hasnain S, et al. Peganum harmala can minimize Escherichla coli infection in poultry, but long-term feeding may induce side effects [ J]. Poultry Science, 2008, 87 (2): 240-249.
6Seo K H, Holt P S, Gast T K, et al. Elimination of Early Salmonella enteritidis Infection After Treatment with Competitive-Exclusion Culture and Enrofloxacin in Experimentally Infected Chicks [ J]. Poultry Science, 2000, 79 (10): 1408 -1413.
7de Lucas J J, Navarro J L, Rubio S, et al. Pharmacokinetic behaviour of enrofloxacin in greater rheas following a single-dose intramuscular administration [ J]. Veterinary Journal, 2008, 175 (1): 136-138.