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Avian Pathol ; 51(2): 120-128, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34787031


RESEARCH HIGHLIGHTSSulfamethoxazole and ampicillin resistance are the highest in E. coli isolates of both broilers and turkeys.Short-term effects of antibiotic use on resistance are seen more often than long-term effects.Historical penicillin use is associated with penicillin resistance in broilers.There is an association between historical use and resistance to trimethoprim in turkeys.

Anti-Infecciosos , Doenças das Aves Domésticas , Animais , Antibacterianos/farmacologia , Anti-Infecciosos/farmacologia , Anti-Infecciosos/uso terapêutico , Galinhas , Farmacorresistência Bacteriana , Escherichia coli , Fazendas , Testes de Sensibilidade Microbiana/veterinária , Doenças das Aves Domésticas/tratamento farmacológico , Perus
Animals (Basel) ; 10(3)2020 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-32131557


The analysis of antimicrobial use (AMU) data in livestock allows for the identification of risk factors for AMU, thereby favoring the application of responsible AMU policies on-farm. Herewith, AMU in 36 finishing pig farms in northern Italy from 2015-2017 was expressed as defined daily doses for Italian pigs (DDDita) per population correction unit (DDDita/100kg). A retrospective analysis was then conducted to determine the effects of several husbandry practices on AMU. Overall, AMU ranged between 12 DDDita/100kg in 2015 and 8 DDDita/100kg in 2017, showing no significant trends, due to the large variability in AMU between farms. However, a 66% AMU reduction was observed in 19 farms during 2015-2017. Farm size, number of farm workers, air quality, average pig mortality, and presence of undocked pigs on the farm had no significant effects on AMU. Rather, welfare-friendly farms had 38% lower AMU levels (p < 0.05). In conclusion, animal welfare management seems to be relatively more important than farm structure and other managerial characteristics as drivers of AMU in finishing pig farms.