Safety and efficacy of Avatec® 150G (lasalocid A sodium) as a feed additive for chickens for fattening and chickens reared for laying

Safety and efficacy of a feed additive consisting of lasalocid A sodium and nicarbazin (Nilablend™ 200G) for chickens for fattening (Zoetis Belgium SA)

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the coccidiostat Nilablend™ 200G containing lasalocid A sodium and nicarbazin. Nilablend™ 200G is not safe for chickens for fattening at the proposed maximum use level of 50 mg lasalocid A sodium + 50 mg nicarbazin/kg complete feed. Concurrent administration of Nilablend™ 200G (containing lasalocid A sodium) with tiamulin and certain other medicinal substances should be avoided. Lasalocid A sodium has antimicrobial activity against Gram-positive bacterial species while many Enterobacteriaceae are naturally resistant. Induction of resistance and/or cross-resistance was not observed in experimental conditions. No information on the interactions of nicarbazin with feed materials, other approved additives or medicinal products have been provided. No data were submitted on the microbiological safety of nicarbazin. The toxicological package for lasalocid A sodium and nicarbazin identified no observed adverse effect levels (NOAELs) that could be the basis for setting health-based guidance values (e.g. an acceptable daily intake (ADI)). The Panel concluded that a concern for the genotoxicity of nicarbazin in Nilablend™ 200G cannot be excluded and that clarification on the mechanism of action of the test items would be needed. Therefore, the FEEDAP Panel is not in the position to establish an ADI for DNC on which to base the assessment of consumer safety. Nilablend™ 200G is considered toxic by inhalation, corrosive and irritant to eyes, slightly irritant to the skin but not a skin sensitiser. Inhalation exposure is considered a risk to persons handling the additive. The FEEDAP Panel cannot conclude on the safety of Nilablend™ 200G for the environment due to a possible risk for aquatic compartment (freshwater) for DNC. The efficacy of Nilablend® 200G was demonstrated.

Safety and efficacy of Lactobacillus rhamnosus CNCM I-3698 and Lactobacillus farciminis CNCM I-3699 as a feed additive for all animal species

Following a request from the European Commission, the EFSA Panel on Additives and products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of Lactobacillus rhamnosus CNCM I-3698 and Lactobacillus farciminis CNCM I-3699 when used as a silage additive in forage for all animal species. The additive is the result from the fermentation of milk-based broth with L. rhamnosus CNCM I-3698 and L. farciminis CNCM I-3699. It is intended to be used in easy and moderately difficult to ensile materials at a minimum proposed application rate of 2.5 × 107 and maximum 8 × 107 VFU/kg complete feed for all animal species. The data provided do not allow a full characterisation of the additive, and therefore, uncertainty remains on the nature of the product in terms of viability, on the ratio between the active agents and on the shelf-life of the additive. Both strains fulfil the requirements of the Qualified Presumption of Safety (QPS) approach to the assessment of safety and consequently, are presumed safe for the target animals, consumers of products from animals receiving the additive and the environment. The additive should be considered a respiratory sensitiser. In the absence of data, no conclusions can be drawn on the irritancy of the additive to skin and eyes or on its dermal sensitisation potential. No conclusions can be drawn on the efficacy of the additive to improve the ensiling process of easy and moderately difficult to ensile materials.