Emerging Poultry Diseases - AQINAC PDF
Preview Emerging Poultry Diseases - AQINAC
Emerging Poultry Diseases Algis Martinez, DVM, ACPV Diplomate Global Veterinary Services Cobb-Vantress, Inc. ENTEROCOCCUS CECORUM Bacterial Spondylitis Copyright Cobb-Vantress, Inc. Photo: Dr. Algis Martinez Kinky Back VS Enterococcal Spondylitis Spondylolisthesis “Kinky Back” Enterococcal Spondylitis (ES) • Sporadic (different ages) • Outbreaks (4-6weeks) • Rare individuals • 5-15% of flock • Spine malformation • Spine infection Enterococcal Spondylitis The actual lesion is an abscess in the free thoracic vertebrae First reported in the US back in 2006 in breeder males, 2008 in broilers More common now in broilers, especially males. As young as 15 days of age Culling+Mortality can reach 15%. Current cases 2-4% lameness Higher plant condemns: 2-4% Immunosuppression will drive incidence of EC Intestinal absorption of EC. Cocci? Copyright Cobb-Vantress, Inc. 4 Enterococcal Spondylitis Septicemia: Hepatitis, Femoral Head Necrosis (FHN), Synovitis Caused by a Gram+ Bacterium: Enterococcus cecorum NCSU has found difference in pathogenicity among EC isolates. Vaccine candidates. Typically sensitive to amoxicillin, gentamycin, penicillin, enrofloxacin, LS, and fosfomycin Resistant to tetracyclines, sulfas and streptomycin Process develops really early. Reason why most antibiotic treatments don’t work during outbreak No evidence of vertical transmission, although found in hatcheries and eggshells Copyright Cobb-Vantress, Inc. 5 ENTEROCOCCUS CECORUM Bacterial Spondylitis Copyright Cobb-Vantress, Inc. ENTEROCOCCUS CECORUM Septicemia FHN Necrotic Hepatitis • Higher farm mort/culls: lameness (vertebra and FHN) • Higher condemns: Septicemia, dermatitis Copyright Cobb-Vantress, Inc. Reports of ES Worldwide 2015 2002 BELGIUM 2006 P. De Herdt, P. Defoort, J. Van Steelant, H. Swam, 5L. Tanghe, S. Van Goethem, M. Vanrobaeys 9 ONTARIO, CANADA First report 2008 Margaret J. Stalker et al. J VET Diagn Invest 2010;22:643-645 Copyright © by American Association of Veterinary Laboratory Diagnosticians
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