Chris Morrow, PhD BVSc Global Technical Manager, Bioproperties Associate Professor, University of Melbourne Poultry Focus, Bangkok, March 2016.

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Presentation transcript:

Chris Morrow, PhD BVSc Global Technical Manager, Bioproperties Associate Professor, University of Melbourne Poultry Focus, Bangkok, March 2016

 Biological  Diseases  Respiratory, Reproductive (EAA), Systemic (IS)  Production inefficiencies (Chronic infection)  Broilers  Antibiotic dependence  FCR feed into live weight  Layers and breeders  Output  Antibiotic dependence  FCR feed into eggs  Commercial  Export  Local (especially in non integrated production systems)  Maternal antibody

ParameterMG infected (strain dependent) F strain vaccinated (Never used in Breeders in USA) MS infected (very strain dependent) Overt respiratory diseaseYes Not by itself in lab setting Layers – chronic effects on egg production 10 to 20 eggs/hen less than free flocks 7 eggs less than free flocks (Carpenter et al 1981) 5 to 10 eggs/hen less than free flocks (3 eggs BB) Infection in layEgg dropProtectedEgg drop HatchabilityIncreased pips with airsacculitis Vertical transmissionVariable increased pips with airsacculitis FCR of egg productionUnknown but probable 4% more seen in vaccine responses assessments Progeny CRD and meat FCR YesYes especially with LaSota Yes in synergistic situations Infectious synovitisRarelyNoSome strains PeritonitisYesUnlikelyYes EAANo Yes adapted from Stipkovits and Kempf 1996

ParameterMG infected (strain dependent) F strain vaccinated (Never used in Breeders in USA) MS infected (very strain dependent) Overt respiratory diseaseYes Not by itself in lab setting Layers – chronic effects on egg production 10 to 20 eggs/hen less than free flocks 7 eggs less than free flocks (Carpenter et al 1981) 5 to 10 eggs/hen less than free flocks (3 eggs BB) Infection in layEgg dropProtectedEgg drop HatchabilityIncreased pips with airsacculitis Vertical transmissionVariable increased pips with airsacculitis FCR of egg productionUnknown but probable 4% more seen in vaccine responses assessments Progeny CRD and meat FCR YesYes especially with LaSota Yes in synergistic situations Infectious synovitisRarelyNoSome strains PeritonitisYesUnlikelyYes EAANo Yes adapted from Stipkovits and Kempf 1996

 Freedom (Kill Positives)  Susceptible population  Antibiotics  Acquired resistance  Cost  Killed vaccines  Humoral antibody  Live vaccines  Mucosal immunity  Combinations  Incompatibilities Antibiotic Live Vaccines Freedom Killed vaccines Breeders, Layers GPs, Broilers

 Not sustainable  The more you use the more you lose  May be in non target organisms  Customer don’t wont  Frenzy over Colistin resistance emergence  Technical issues are not important anymore. The battle is lost.

RegionTherapeuticsGrowth promoters IonophoresComment USAOK but no longer antibiotic free NoNo – considered antibiotic Coccidiosis vaccination or chemicals in broilers & Mycoplasma Freedom EULarge variation in use between countries NoNo problemMS control is important ROWNo definitionVariableNo problemMycoplasma control by antibiotics in some areas AustraliaOK but no antibiotic free (except organic) Legal but certain customers restrict use No problemMycoplasma control by live vaccination

Wild type

 Short duration  Like Coccidial vaccines  Maintenance requires regular stimulation  Not always parallel to humoral antibody  Live vaccine colonizing a mucosal site for life is the perfect solution  Affects field strain pops.  Must vaccinate before infected.

 No – variation in  Price  Price of Vaccine  Cost of Administration  Mode of administration  Presentation, Storage, and cold chain dependence  Strain dependent properties  Horizontal transmission  Vertical transmission  Residual virulence and Reversion to virulence  Immunogenicity/Protection  Antibiotic sensitivity?  Reason for attenuation  Variation in  Humoral antibody response  Technical tools to support product  Ability to assess protection and vaccine administration in non- specialist laboratories

ParmeterBefore intervention (F + Antibiotic) After (MSH and ts-11) Comment DiseaseClinical respiratory disease No respiratory signs Less peritonitis Better livability after vaccination Saleable DOC140 Chicks162 Chicks15 chicks more than SE Asia Cobb average Feed per chick325g/Chick285g/Chick Now getting 280g From beginning of production. Hatchability89% peak 84.2% average 92% peak with 89% average Airsacculitis in pips >35%<20%Good hatchability now six weeks in lay NoneSome at placement DOC qualityImprovedLess customer complaints - Options

TreatmentBefore (F + Antibiotic)Vaccination (MSH and ts-11) Cost of antibiotics$100K/year (800K Cobb hens)$0 Cost of vaccine + Admin7c for F strain + 3c by eye drop 25-30c per hen MSH and ts-11 by eye drop Extra production+22 extra chicks per hen Feed (FCR eggs)40g less feed per chick (-15%) Respiratory diseaseNo respiratory disease Less peritonitis in lay Calculationper Hen Profit (No broiler effects) Extra RevenueChicks25-50c sale price × 22 chicks+ $5.5 to $11.00 per hen Extra CostFeed(70c per kg × 0.67 kg/hen) [162 × × 325 g] +$0.47 per hen Cost SavingAntibiotics$100K/800K hens+ $0.16 per hen Extra CostVaccine(28c – 10c) per hen − $0.18 per hen Total Extra profit + $5.95 to $11.45 per Hen

 Live vaccines  Breeders  Layers  Forget MG and MS