Publication Database

Impact of hygiene- and management measures on the ESBL- and AmpC- colonization of broiler chickens (2019)

Art

Vortrag

Autoren

Robé, C. (WE 10)

Daehre, K. (WE 10)

Merle, R. (WE 16)

Fiedler, S.

Ewers, C.

Guenther, S.

Roesler, U. (WE 10)

Kongress

International Symposium on Zoonoses Research 2019

Berlin, 16. – 18.10.2019

Quelle

Zoonoses 2019 - International Symposium on Zoonoses Research : Book of Abstracts — International Symposium on Zoonoses Research (Hrsg.)

Berlin, 2019 — S. 37

Sprache

Englisch

Verweise

URL (Volltext): https://evis.events/event/79/attachments/23/154/Book_of_Abstracts_Zoonoses2019.pdf

Kontakt

Institut für Tier- und Umwelthygiene

Robert-von-Ostertag-Str. 7-13
14169 Berlin
+49 30 838 51845
tierhygiene@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Background:
The colonization of broilers with ESBL- and AmpC- producing Enterobacteriaceae is wellknown, but only limited data on intervention strategies to reduce the colonization of broilers is available.To investigate potential measures, a recently established colonization model was used.

Material and methods:
Groups of 90 broilers were housed in conventionally, alternating one measure each. Tested parameters included (1) acidification of water, (2) usage of an alternative breed, (3) reduction of stocking density to 25 kg/m2 , (4) tripled amount of litter, (5) application of one defined non-pathogenic Competitive Exclusion (CE-) strain and (6) of a non-defined CE-culture. One fifth of the broilers were orally co-infected on their third day of life (seeder) with 102 cfu of one ESBL- and one AmpC- producing E. coli strain. Colonization of all seeder and 28 non- infected broilers (sentinel) was proven by cloacal swabs during each trial and a final necropsy.

Results and conclusion:
Statistical analysis reveals a strain-dependent reduction of colonization for the ESBL- producing E. coli strain concerning the reduction of stocking density and the application of a CEstrain. Reduction of both strains was achieved using the CE-culture. In contrast, water acidification seems to increase the colonization with both bacterial strains. Consequently, the effects of the tested measures on the ESBL- and AmpC- colonization are different, with the CE as a meaningful approach for reduction.