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Antibiotikaeinsatz in der Bayerischen Schweinehaltungspraxis ABYS: Antibiotikaeinsatz und Antibiotikaresistenz in ökologischen Betrieben

Bassitta, R.; Bartuschat, A.; Harms, K.; Bauer, J.; Straubinger, RK; Poljak, S.; Storch, J.; Dennhöfer, J.; Schwaller, A.; Hamann, Jörn and Hölzel, CS (2017) Antibiotikaeinsatz in der Bayerischen Schweinehaltungspraxis ABYS: Antibiotikaeinsatz und Antibiotikaresistenz in ökologischen Betrieben. Paper at: 14. Wissenschaftstagung Ökologischer Landbau, Campus Weihenstephan, Freising-Weihenstephan, 07.-10. März 2017.

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Summary

Between 2012 and 2014, ABYS study recorded antibiotic use, detection and resistance data for 23 organic and 35 conventional pig farms. Antibiotic contents of
farm-made fertilizers were assessed by LC/MS-MS. Phenotypic antimicrobial resistance was investigated in Escherichia (E.) coli (indicator bacteria); antimicrobial
resistance genes of the total bacterial microbiota (sul(II), tet(A), tet(B), tet(M); marker Measured in nUDD (number of animals treated multiplied by treatment days), colistin
was the most frequently used antibiotic, in organic farms followed by tylosin, doxycycline and amoxicillin. Antibiotic residues were rarely detected; however, manure contained up to 10^8 antimicrobial resistance genes per gram; concentrations were higher when the antibiotic had been used on farm. In six farms, antimicrobial resistant E. coli were tracked from the moment when pigs were placed on farm. Some isolates carried a broad variety of resistances from the
very beginning that were maintained until slaughter, despite the fact that partly no antibiotics were applied during fattening. Approaches for reducing carry-over of antimicrobial resistant bacteria will be discussed


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:antibiotics, manure, antimicrobial resistance, pig, farm management, Antibiotikaeinsatz, Antibiotikaresistenz, Schweinehaltungspraxis, ökologische Betriebe
Subjects: Animal husbandry > Health and welfare
Animal husbandry > Production systems > Pigs
Research affiliation: Germany > University of Munich - TUM
International Conferences > 2017: Scientific Conference German Speaking Countries > Animal health
Germany > Other organizations
ISBN:978-3-89574-925-4
Deposited By: Hasreiter, Anna
ID Code:31832
Deposited On:04 Jul 2017 17:23
Last Modified:04 Jul 2017 17:23
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 14. Wissenschaftstagung erschienen.
S. Wolfrum, H. Heuwinkel, H.J. Reents, u.a. (Hrsg.) (2017): Ökologischen Landbau weiterdenken - Verantwortung übernehmen - Vertrauen stärken. Beiträge der 14. Wissenschaftstagung Ökologischer Landbau, Freising-Weihenstephan, 7.-10. März 2017
Verlag Dr. Köster, Berlin

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