Safety and efficacy of Monteban® G100 (narasin) for chickens for fattening

Safety and efficacy of Panavital feed (d-glyceric acid) for chickens for fattening

Panavital feed is a preparation of d-glyceric acid intended to be used as a zootechnical additive in chickens for fattening. The active substance (d-glyceric acid) of the additive ■■■■■ by fermentation with Gluconobacter frateurii. The additive is intended to be used in chickens for fattening at a concentration from ■■■■■. The FEEDAP Panel notes that the data provided for the characterisation of the active substance are incomplete and that data on the characterisation of the formulated additive are not provided. Based on the information available, the FEEDAP Panel cannot assess the qualitative and quantitative composition of Panavital feed. Due to lack of data, the safety of the production strain claimed to be used to produce the active substance cannot be evaluated. Based on the data provided by the applicant, the FEEDAP Panel cannot conclude on the safety of Panavital feed for the target species, the consumer, the user and the environment and on the efficacy of Panavital feed when used as feed additive.

Modification of the terms of authorisation regarding the maximum inclusion level of Maxiban® G160 (narasin and nicarbazin) for chickens for fattening

Following the 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 proposed modification of the terms of the authorisation regarding the maximum inclusion level of Maxiban^® G160. The FEEDAP Panel cannot conclude on the safety of Maxiban^® G160 at a dose level of 70 + 70 mg/kg feed for the target species. The use of Maxiban^® G160 in diets for chickens for fattening at the maximum proposed dose complies with the maximum residue levels (MRLs) in force of narasin and 4,4’‐dinitrocarbanilide (DNC) at 0‐day withdrawal except for DNC in kidney which was slightly above the MRL. Compliance with DNC MRLs was seen in all tissues at 1‐day withdrawal. Based on the available data, the FEEDAP Panel cannot conclude on the safety of Maxiban^® G160 for the environment due to the risk identified for the terrestrial organisms due to DNC. Moreover, the high persistence and hydrophobicity of DNC indicate that there might be a risk for bioaccumulation but the risk for secondary poisoning was not identified. The potential of DNC to accumulate in soil over the years should be investigated by monitoring in a field study. The FEEDAP Panel would not be in the position to conclude on the efficacy of Maxiban^® G160 in chickens for fattening based on the data provided for the dose of 40 + 40 mg narasin + nicarbazin/kg feed.

Safety and efficacy of Monteban® G100 (narasin) for ducks for fattening

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 safety and efficacy of Monteban^® G100 for ducks. Monteban^® G100, containing narasin, is intended for the prevention of coccidiosis in ducks for fattening at a dose range of 60–70 mg/kg of complete feed. Narasin from Monteban^® G100 is safe for ducks for fattening at a level of 70 mg/kg complete feed with a margin of safety of about 4. The FEEDAP Panel assumes that the residues in duck tissues would be of the same magnitude as those measured in the physiologically similar major species, chickens for fattening. The use of Monteban^® G100 at a maximum concentration of 70 mg/kg complete feed for ducks for fattening is safe for the consumer without applying a withdrawal period, provided the maximum residue limit (MRL) of 50 μg narasin/kg for all wet tissues would not be exceeded. Monteban^® G100 is irritant to the eyes but not to the skin. It has the potential to induce skin sensitisation. The acute systemic toxicity following dermal application is low. Inhalation exposure would pose a risk to persons handling the additive. Narasin, when used as feed additive for ducks for fattening at 70 mg/kg feed, is not expected to pose a risk to the environment. The risk for sediment compartment cannot be assessed. Narasin is not considered to have a bioaccumulation potential. Insufficient data were provided to allow a conclusion on the efficacy of Monteban^® G100 in ducks.