Assessment of the cost effectiveness of vaccinating free range poultry against Newcastle disease in Busedde sub-county, Jinja district, Uganda

摘要

VaccinationhascontinuouslybeenreportedworldwidetobethemainmethodofcontrollingpoultryagainstNewcastledisease.AstudywasthereforecarriedouttoassessthecosteffectivenessofvaccinatingFree-rangepoultryagainstNewcastlediseaseinBusedesub-county,Jinjadistrict.Usingamultistageclustersamplingprocedure,aflockwithineachofthe30householdsperthetwoselectedparishes(vaccinatedandnon-vaccinatedareas)wasusedforthestudy.Questionnaireswereadministeredinboththecross-sectionalandlongitudinalsurveystomonitorforthechangesinflocks'size,eggproductionandflockdynamics.Datacollectedweresubjectedtoarepeatedmeasureanalysis,whichcomparedthetwotreatmentgroupsinordertoassessthecostsandbenefits(farmer'sincome)fromvaccinationusingpartialbudgetanalysisathouseholdlevel.Haemaglutinationinhibition(HI)testswerecarriedoutonserumsamplescollectedpreandpostvaccinationtodetecttheimmunitystatusoftheflock.Resultsshowaflocksizeincreaseofmeannumberof26birdsinvaccinatedcomparedtoameannumberof17birdsincontrolarea(p=0.001).Thedynamicsofthisincreasedflocksizeresultedintoamarkedhighnetbenefitvalueof6,422,000/=(Ugshillings)forthevaccinatedareacomparedto1,629,700/=valueinthecontrolarea(p=0.001).TheHItestsanalyzedusingchi-squaretestvalueof9.8,2dfandp0.07,produced66%preand75%postvaccinationtitresforprotectiveantibody.