Effect of a live Mycoplasma synoviae vaccine on the production of eggshell apex abnormalities induced by a M. synoviae infection preceded by an infection with infectious bronchitis virus D1466

Avian Pathology : Journal of the W.V.P.A
A FeberweeW J Landman

Abstract

An experimental study was conducted to assess the effect of a live Mycoplasma synoviae vaccine (Vaxsafe MS; Bioproperties Pty Ltd, Ringwood, Victoria, Australia) on M. synoviae-induced eggshell apex abnormalities (EAA). Four experimental groups of specified-pathogen-free white laying hens were made. All groups were inoculated with infectious bronchitis virus D1466 at 18 weeks of age. One group did not receive further treatment (non-vaccinated non-challenged (NVNC)). Two groups were vaccinated at 14 weeks of age against M. synoviae, and one of these groups was also challenged with an EAA-inducing M. synoviae strain 5 days after infectious bronchitis virus challenge (vaccinated non-challenged (VNC) and vaccinated challenged group (VC), respectively). The fourth group was not vaccinated but was challenged with M. synoviae (non-vaccinated challenged (NVC)). Eggs with EAA eggs were produced only in the NVC and VC groups. However, the proportion of eggs with EAA and the mean daily production of eggs with EAA per chicken was significantly lower (P<0.05) in the VC group (88/741 (11.9%) and 0.09+/-0.01 eggs per hen) compared with the NVC group (148/646 (22.9%) and 0.14+/-0.01 eggs per hen). The mean daily egg production per chicken was ...Continue Reading

References

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Citations

Apr 15, 2010·Avian Pathology : Journal of the W.V.P.A·A Feberwee, W J M Landman
Oct 30, 2015·British Poultry Science·I CizeljD Benčina
Mar 2, 2016·Avian Pathology : Journal of the W.V.P.A·R DijkmanW J M Landman
Jan 25, 2017·Avian Pathology : Journal of the W.V.P.A·A FeberweeW J M Landman
Jun 26, 2014·Journal of Veterinary Science·Eun-Ok JeonIn-Pil Mo
Aug 30, 2011·The Veterinary Record·B W StrugnellR M Irvine
Feb 2, 2021·Poultry Science·Verónica CortésPablo Catalá-Gregori
Aug 25, 2021·Transboundary and Emerging Diseases·Miguel Angel Chaidez-IbarraSoila Maribel Gaxiola

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Datasets Mentioned

BETA
X52083
FJ495803

Methods Mentioned

BETA
PCR
genotyping

Software Mentioned

DNASTAR
Light Cycler
Statistix®
Rotor
Gene 6000

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