Avian Mycoplasma Control - Central for antibiotic independent production

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Antibiotics.

Will affect mycoplasma vaccine. 

  • Enrofloxacin
  • Tetracyclines
  • Macrolides
  • Lincomycin
  • Tylosin
  • Tiamulin
  • Timiclocin
  • Sulpha etc (a little)
  • Chloramphenicol

May not affect local field strains; Acquired resistance.

 

Won’t affect vaccine.

  • Ampicillin
  • Amoxycillin
  • Penicillin
  • Fosfomycin (Phosphomycin)
  • Cephalosporins
  • Not absorbed orally

                      –      Spectinomycin
                      –      Neomycin

  • Colistin and antibiotics at growth promoter levels

 

Effects of avian mycoplasma infections.

  • Overt disease.

                         –      Primary effects.
                         –      Synergistic effects.

                                             Chronicity.
                                             Especially with respiratory agents (but not with mycoplasmas?).

  • Production inefficiencies.

                         –      Egg production.
                         –      FCR eggs and meat.

  • Dependence on antibiotics.

                         –      Prophylactic medication programmes.

 

 

Airsacculitis.

 

Synergy.

 

Factors.

 

Chronic Respiratory Disease Three way is the most severe.

 

Mycoplasma control strategies.

 

Routine prophylactic programmes.

Meat.

  • Antibiotics at 20-22 days

 

Breeders and Layers.

  • Antibiotics in lay every 4 to 8 weeks

 

These are against mycoplasma Especially MS

Antibiotic reduction: Case studies with MSH.

 

Indonesian case study Broiler breeders.

 

Cost-benefit analysis (USD).

 

Estimate of antibiotic use against MS in Europe (2011).

 

Estimate of antibiotic use against MS in Europe (2011).

 

 

Case report: flock 2011.

 

Mycoplasma freedom.

  • Achilles heel

                        –      Totally susceptible populations

                                          Unprotected except by biosecurity
                                          Surrounding reservoirs are not always also trying to control (Type of compartmentalization).

  • Vaccination

                        –      Increase resistance to getting infected

                                          Need update of OIE/NPIP etc

 

Non vaccinated flock with 2 egg production drops responsive to Tylosin.

 

Vaxsafe® MSH and MG ts-11 vaccinated responding to amoxicillin.

  

 
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