RT info:eu-repo/semantics/article T1 Maximum levels of cross‐contamination for 24 antimicrobial active substances in non‐target feed. Part 7: Amphenicols: florfenicol and thiamphenicol A1 Koutsoumanis, Konstantinos A1 Allende, Ana A1 Álvarez Ordóñez, Avelino A1 Bolton, Declan A1 Bover‐Cid, Sara A1 Chemaly, Marianne A1 Davies, Robert A1 De Cesare, Alessandra A1 Herman, Lieve A1 Hilbert, Friederike A1 Lindqvist, Roland A1 Nauta, Maarten A1 Ru, Giuseppe A1 Simmons, Marion A1 Skandamis, Panagiotis A1 Suffredini, Elisabetta A1 Andersson, Dan I A1 Bampidis, Vasileios A1 Bengtsson‐Palme, Johan A1 Bouchard, Damien A1 Ferran, Aude A1 Kouba, Maryline A1 López Puente, Secundino A1 López Alonso, Marta A1 Nielsen, Søren Saxmose A1 Pechová, Alena A1 Petkova, Mariana A1 Girault, Sebastien A1 Broglia, Alessandro A1 Guerra, Beatriz A1 Innocenti, Matteo Lorenzo A1 Liébana, Ernesto A1 López Gálvez, Gloria A1 Manini, Paola A1 Stella, Pietro A1 Peixe, Luisa A2 Tecnologia de los Alimentos K1 Tecnología de los alimentos K1 Florfenicol K1 Thiamphenicol K1 Antimicrobial resistance K1 Sub-inhibitory concentration K1 Growth promotion K1 Yield increase K1 Food-producing animals K1 3309 Tecnología de Los Alimentos AB [EN] The specific concentrations of florfenicol and thiamphenicol in non-target feed for food-producing animals, below which there would not be an effect on the emergence of, and/or selection for, resistance in bacteria relevant for human and animal health, as well as the specific antimicrobial concentrations in feed which have an effect in terms of growth promotion/increased yield, were assessed by EFSA in collaboration with EMA. Details of the methodology used for this assessment, associated data gaps and uncertainties, are presented in a separate document. To address antimicrobial resistance, the Feed Antimicrobial Resistance Selection Concentration (FARSC) model developed specifically for the assessment was applied. The FARSC for florfenicol was estimated. However, due to the lack of data, the calculation of the FARSC for thiamphenicol was not possible until further experimental data become available. To address growth promotion, data from scientific publications obtained from an extensive literature review were used. Levels in feed that showed to have an effect on growth promotion/increased yield were reported for florfenicol, whilst for thiamphenicol no suitable data for the assessment were available. Uncertainties and data gaps associated to the levels reported were addressed. For florfenicol, it was recommended to perform further studies to supply more diverse and complete data related to the requirements for calculation of the FARSC, whereas for thiamphenicol, the recommendation was to generate the data required to fill the gaps which prevented the FARSC calculation PB Wiley SN 1831-4732 LK https://hdl.handle.net/10612/20692 UL https://hdl.handle.net/10612/20692 NO Koutsoumanis, K., Allende, A., Álvarez Ordóñez, A., Bolton, D., Bover-Cid, S., Chemaly, M., Davies, R., De Cesare, A., Herman, L., Hilbert, F., Lindqvist, R., Nauta, M., Ru, G., Simmons, M., Skandamis, P., Suffredini, E., Andersson, D. I., Bampidis, V., Bengtsson-Palme, J., et al. (2021). Maximum levels of cross-contamination for 24 antimicrobial active substances in non-target feed. Part 7: Amphenicols: florfenicol and thiamphenicol. EFSA Journal, 19(10). https://doi.org/10.2903/J.EFSA.2021.6859 DS BULERIA. Repositorio Institucional de la Universidad de León RD 30-jun-2024