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Scientific Opinion on the safety and efficacy of Lactococcus lactis (DSM 11037) as a silage additive for all species

Lactococcus lactis is a technological additive intended to improve the ensiling process at a proposed dose of 1 x 108 CFU/kg fresh material. The bacterial species L. lactis is considered by EFSA to be suitable for the Qualified Presumption of Safety (QPS) approach to safety assessment. As the identity of the strain has been clearly established and as no antibiotic resistance was detected, the use of the strain in the production of silage is considered safe for livestock species, consumers of products from animals fed the treated silage and for the environment. Given the proteinaceous nature of the active agent and in the absence of evidence to the contrary, the additive should be considered to have the potential to be a skin/respiratory sensitizer. Four studies with laboratory-scale silos are described in the dossier. The additive showed the potential to improve the production of silage by a reduction of pH and increased preservation of dry matter. There was also evidence of a reduction in protein breakdown during ensiling in treated samples.

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