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Efficacy of the feed additive consisting of Bacillus velezensis NRRL B‐67257 (Correlink™ ABS747) as a feed additive for all growing poultry species (Elanco GmbH)

Authors :
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
Vasileios Bampidis
Giovanna Azimonti
Maria de Lourdes Bastos
Henrik Christensen
Birgit Dusemund
Mojca Fašmon Durjava
Maryline Kouba
Marta López‐Alonso
Secundino López Puente
Francesca Marcon
Baltasar Mayo
Alena Pechová
Mariana Petkova
Fernando Ramos
Yolanda Sanz
Roberto Edoardo Villa
Ruud Woutersen
Miguel Prieto
Montserrat Anguita
Elisa Pettenati
Barbara Rossi
Rosella Brozzi
Source :
EFSA Journal, Vol 21, Iss 1, Pp n/a-n/a (2023)
Publication Year :
2023
Publisher :
Wiley, 2023.

Abstract

Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the efficacy of a product consisting of viable spores of Bacillus velezensis NRRL B‐67257 as a zootechnical additive for chickens for fattening, chickens reared for laying, turkeys for fattening, turkeys reared for breeding and minor poultry species. The additive has the tradename Correlink™ ABS747 Bacillus subtilis and is not currently authorised in the European Union. It is intended for use in complete feed for the target species at a minimum inclusion level of 1.5 × 108 CFU/kg complete feed. In a previous opinion the FEEDAP Panel could not conclude on the efficacy of the additive for the poultry species due to the potential cross‐contamination of the control diets in two of the three studies provided. The applicant has provided supplementary information to exclude this possibility. The new data showed that the gene used as marker in the previous analyses is non‐specific of the NRRL B‐67257 strain, which precluded the adequate quantification of the active agent in the feeds used in the studies. Moreover, in a second analysis, the active agent could not be isolated from the field excreta samples collected from either from the treated or the control group of one of the formerly submitted efficacy studies. The Panel concluded that the methodology was not able to discriminate between the strain under assessment and the background. Therefore, the FEEDAP Panel was not in the position to conclude on the efficacy of Correlink™ ABS747 for all growing poultry species based on the data newly provided.

Details

Language :
English
ISSN :
18314732
Volume :
21
Issue :
1
Database :
Directory of Open Access Journals
Journal :
EFSA Journal
Publication Type :
Academic Journal
Accession number :
edsdoj.68a798e87a8348f6b299839cba6ea551
Document Type :
article
Full Text :
https://doi.org/10.2903/j.efsa.2023.7712