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The European Commission mandated EFSA to assess the toxicity of bromide, the existing maximum residue levels (MRLs), and possible transfer from feed into food of animal origin. The critical effects of bromide in experimental animals are on the thyroid and central nervous system. Changes in thyroid hormone homeostasis could result in neurodevelopmental toxicity, among other adverse effects. Changes in thyroid hormone concentrations and neurophysiological parameters have also been observed in experimental human studies, but the evidence was limited. Dose-response modelling of decreased blood thyroxine concentrations in rats resulted in a reference point of 40 mg/kg body weight (bw) per day. The Scientific Committee established a tolerable daily intake (TDI) of 0.4 mg/kg bw per day and an acute reference dose (ARfD) of 0.4 mg/kg bw per day to protect against adverse neurodevelopmental effects. The TDI value is supported by the results of experimental human studies with a NOAEL of 4 mg/kg bw per day and 10-fold interindividual variability. The TDI and ARfD are considered as conservative with 90% certainty. Insufficient evidence related to the toxicological effects of bromide was available for animals, with the exception of dogs. Therefore, the reference point of 40 mg/kg bw per day was extrapolated to maximum safe concentrations of bromide in complete feed for other animal species. Bromide can transfer from feed to food of animal origin, but, from the limited data, it was not possible to quantify the transfer rate. Monitoring data exceeded the current MRLs for some food commodities, generally with a low frequency. A conservative safety screening of the MRLs indicated that the TDI and ARfD are exceeded for some EU diets. Dietary exposure assessment for animals was not feasible due to insufficient data. The Scientific Committee recommends data be generated to allow robust dietary exposure assessments in the future, and data that support the risk assessment., (© 2025 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, the European Food Safety Authority was asked to deliver a scientific opinion on the proposed modification of the terms of the authorisation of canthaxanthin, regarding the addition of a new production route, by the yeast Yarrowia lipolytica CBS 146148. The additive is already authorised as sensory feed additive for use in feed for chickens for fattening, minor poultry species for fattening, laying poultry, poultry reared for laying, ornamental fish, ornamental birds and ornamental breeder hens. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concludes that canthaxanthin produced with Yarrowia lipolytica CBS 146148 is considered safe for the target species, the consumer and the environment under the current authorised conditions of use. Canthaxanthin is not an irritant to skin or eyes and it is unlikely to be a skin sensitiser. No conclusion can be reached on the respiratory sensitisation of canthaxanthin. In the absence of data, no conclusions on the safety for the user can be reached for any preparation produced with canthaxanthin. Canthaxanthin produced by fermentation with Y. lipolytica CBS 146148 is efficacious as a colouring agent in feed for chickens for fattening and minor poultry species for fattening, laying poultry and poultry reared for laying, ornamental fish and ornamental birds., (© 2025 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of ponceau 4R as sensory additives (functional group: (a) colourants: (i) substances that add or restore colour in feedingstuffs). The additive is already authorised for use with cats and dogs and ornamental fish. The additive is intended to be incorporated in freshwater fishing baits up to a maximum of 15 mg/kg in complementary feed in order to colour them. The additive is intended to be incorporated into feed directly in solid form or via an aqueous solution. The additive is not intended for use in aquaculture. The FEEDAP Panel concluded that ponceau 4R is considered safe when used in fish baits for freshwater fish at the maximum proposed dose of 15 mg/kg complementary feed. The use of the feed additive ponceau 4R fish baits for freshwater fish under the conditions of use proposed is of no concern for consumer safety. Ponceau 4R is not skin irritant but should be considered a skin and respiratory sensitiser. Inhalation and dermal exposure are considered a risk. The FEEDAP Panel could not conclude on the eye irritation potential of the additive. In absence of data no conclusion can be reached on the efficacy of ponceau 4R in freshwater fish baits., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of tartrazine as sensory additive (functional group: (a) colourants: (i) substances that add or restore colour in feedingstuffs). Tartrazine is intended to be incorporated in fishing baits up to a maximum of 30 mg/kg in complementary feed in order to colour them and attract fish in freshwater (ponds, rivers), for both recreational and competitive fishing. The additive is not intended for use in aquaculture. Tartrazine is already authorised for use with cats and dogs, ornamental fish, grain-eating ornamental birds and small rodents. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded that the use of tartrazine in the preparation of baits for freshwater fish under the proposed conditions of use is of no concern for the target animals. The use of tartrazine as a feed additive under the proposed conditions of use is considered safe for the consumer and the environment. Regarding the user safety, the additive should be considered a dermal and respiratory sensitiser. Inhalation and dermal exposure are considered a risk. The FEEDAP Panel could not conclude on the irritation potential of the additive. In absence of data, no conclusion can be reached on the efficacy of tartrazine in freshwater fish baits., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of lutein-rich extract of Tagetes erecta L. as sensory additive (functional group: Colourants (ii) substances which, when fed to animals, add colours to food of animal origin) for turkeys for fattening. The additive is already authorised for use in feed for chickens for fattening and minor poultry for fattening and laying hens and minor poultry for laying. The FEEDAP Panel concluded that the use of lutein-rich extract of T. erecta is safe for turkeys for fattening when used up to the maximum proposed use level of 80 mg total carotenoids/kg complete feed. The Panel concluded that the use of lutein-rich extract of T. erecta in feed for turkeys for fattening under the proposed conditions of use would not be of concern for the consumer, considering also its use in other poultry for fattening and for laying hens. Regarding user safety, the lutein-rich extract of T. erecta extract is irritant to skin and eyes and any exposure is considered a risk. The conclusions on user safety reached for the lutein-rich extract of T. erecta would, in principle, apply to preparations made with it. The use of the additive in feed for turkeys for fattening under the proposed conditions of use is safe for the environment. The FEEDAP Panel concluded that the additive has the potential to colour the skin of turkeys for fattening at the proposed conditions of use., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of diclazuril (Clinacox® 0.5%) as a coccidiostat for chickens for fattening and chickens reared for laying. The additive currently on the market complies with the existing conditions of authorisation. The additive remains safe for the target species and the consumer under the authorised conditions of use. The additive is irritant to skin, eyes and respiratory tract but is not a skin sensitiser. Exposure by inhalation cannot be excluded. The FEEDAP Panel cannot conclude on the safety for the environment of diclazuril from Clinacox® 0.5% due to lack of data. Diclazuril from Clinacox® 0.5% at a concentration of 1 mg diclazuril/kg complete feed has the potential to control coccidiosis in chickens for fattening. This conclusion is extended to chickens reared for laying. Development of resistance to diclazuril of field Eimeria spp. strains isolated from chickens should be monitored., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on red carotenoid-rich Paracoccus carotinifaciens NITE SD 00017 for salmon and trout (category: sensory additives; functional group: colourants; substances which when fed to animals add colours to food of animal origin) for the renewal of its authorisation. The applicant provided evidence that the additive complies with the conditions of the authorisation. The Panel concludes that the use of the additive in salmon and trout remains safe for the target species, the consumer and the environment under the authorised conditions of use. When assessing consumer exposure to canthaxanthin and adonirubin at the level of the existing maximum residue limits (MRL) for poultry and the proposed MRL for trout/salmon (5 mg/kg muscle), the exposure of consumers exceeds the acceptable daily intake (ADI) in the population classes toddlers and other children. The Panel considers that there is no need to restrict the use of the additive to fish older than 6 months or of more than 50 g. Red carotenoid-rich Paracoccus carotinifaciens NITE SD 00017 is not irritant to the skin, but is irritant to the eyes. It is considered a dermal and respiratory sensitiser and any exposure via skin or the respiratory tract is a risk., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

This guidance document is intended to assist the applicant in preparing and presenting an application, as foreseen in Article 7.6 of Regulation (EC) No 1831/2003, for the authorisation of additives for use in animal nutrition. It specifically covers the assessment of the efficacy of feed additives., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

EFSA performs dietary exposure assessments for food-producing and non-food-producing animals to deliver risk assessment for mandates on the presence of contaminants in feed. The CONTAM and FEEDAP Panels identified the need to update the animal dietary exposure assessment model used in those assessments in CONTAM Scientific Opinions since 2011 in cases where insufficient occurrence data are available on species specific compound feeds. The Panels proposed in this statement a series of model diets based on groups of feed materials with the possibility to use different feed materials in their formulation. The Panels considered that the currently proposed model diets cover the need of the CONTAM Panel to assess the dietary exposure of animals to contaminants in feed., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety for the consumer of products from animals fed diets with feed additives containing selenium as an active substance. Based on the limited data set available and the several uncertainties, the FEEDAP Panel concluded that the use of organic selenium at the currently maximum authorised use level of 0.2 mg supplemented selenium from organic sources/kg complete feed (within a maximum of 0.5 mg total selenium/kg complete feed) leads to an exceedance of the UL for all the population categories (except elderly and very elderly), suggesting a concern for consumer safety. It was not possible to conclude on the safety of the currently maximum use level of 0.5 mg total selenium/kg complete feed for all consumer categories. Additional data from studies specifically designed to measure deposition of selenium in tissues and products from animal origin resulting from the use of the different sources of selenium would be required to perform a proper risk assessment., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of the coccidiostat salinomycin sodium (Sacox®) for rabbits for fattening. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded that the use of salinomycin sodium (SAL-Na) from Sacox® does not raise safety concerns for the target species, consumers, users and the environment with regard to the production strain. In the absence of adequate tolerance studies, the FEEDAP Panel could not conclude on the safety of SAL-Na from Sacox® for rabbits for fattening. The FEEDAP Panel concluded that the additive is safe for the consumer when it is used at the proposed maximum level of 25 mg SAL-Na/kg complete feed for rabbits and a withdrawal period of 1 day is respected. The following maximum residue limits (MRL) are proposed for the marker residue compound salinomycin (SAL): 0.2 and 0.03 mg SAL/kg for liver and kidney, respectively. The additive is not irritant to skin and eyes but should be considered a potential dermal and respiratory sensitiser. A risk for inhalation toxicity could not be excluded. The use of the SAL-Na from Sacox® in feed for rabbits for fattening up to the highest proposed level will not pose a risk for the terrestrial and aquatic compartment and ground water. The risk of secondary poisoning can be excluded for worm-eating birds and mammals, while it cannot be excluded for fish-eating birds and mammals. The FEEDAP Panel concludes that SAL-Na from Sacox® at the minimum concentration of 20 mg SAL-Na/kg complete feed has the potential to control coccidiosis in rabbits for fattening. Development of resistance to SAL-Na of field Eimeria spp. strains isolated from rabbits for fattening should be monitored., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of monensin sodium (Coxidin®) as a coccidiostat for chickens for fattening, chickens reared for laying, turkeys for fattening and turkeys reared for breeding. The additive currently on the market complies with the existing conditions of authorisation. The FEEDAP Panel concluded that Coxidin® remains safe for turkeys for fattening (up to 16 weeks) and extends this conclusion to turkeys reared for breeding (up to 16 weeks). The Panel was not in the position to confirm that the current maximum authorised level of 125 mg monensin sodium/kg complete feed remains safe for chickens for fattening and chickens reared for laying. The use of monensin sodium from Coxidin® at the corresponding maximum authorised/proposed use levels in the target species is safe for the consumer. The existing maximum residue levels (MRLs) for poultry tissues ensure consumer safety. No withdrawal time is necessary. Both formulations of Coxidin® pose a risk by inhalation. The formulation with wheat bran as a carrier was neither irritant to the skin nor a skin sensitiser but it was irritant to the eyes. In the absence of data, no conclusions could be made on the potential of the formulation containing calcium carbonate to be irritant to skin and eyes and to be a skin sensitiser. The use of monensin sodium from Coxidin® in complete feed for the target species poses no risk for the terrestrial compartments and for sediment. No risk for groundwater is expected. For chickens for fattening the risk for aquatic compartment cannot be excluded, but no risks are expected for the other animal categories. There is no risk of secondary poisoning. Coxidin® is efficacious in controlling coccidiosis at a level of 100 mg/kg complete feed for chickens for fattening and at 60 mg/kg complete feed for turkeys for fattening. These conclusions are extended to chickens reared for laying and turkeys reared for breeding. The Panel noted that there are signs of development of resistance of Eimeria spp. to monensin sodium ., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of the coccidiostat narasin (Monteban® G100) for chickens for fattening. In a previous opinion, uncertainties remained on the identification and characterisation of the non-genetically modified production strain of the active substance narasin. The Panel could not conclude either on the safety of Monteban® G100 for chickens for fattening or on the efficacy of the additive at the minimum applied concentration. The FEEDAP Panel excluded risks for environment but the risk for sediment compartment could not be assessed. The applicant provided supplementary information to cover the data gaps and substituted the narasin production strain from Streptomyces spp. NRRL 8092 to Streptomyces spp. NRRL B-67771. The information submitted to taxonomically identify the production strain did not allow to assign it to any described microbial species. Based on the information provided, the Panel concluded that the use of Monteban® G100 did not raise safety concerns as regards the production strain for the target animal, consumer, user and environment. The Panel concluded that 70 mg narasin/kg complete feed was safe for chickens for fattening with a margin of safety of 1.4; narasin from Monteban® G100 was unlikely to increase shedding of Salmonella Enteritidis, Salmonella Typhimurium and Campylobacter jejuni . Narasin, when used in chickens for fattening at 70 mg/kg feed, was not expected to pose a risk to the aquatic compartment and to sediment, while a risk for the terrestrial compartment could not be excluded. No risk for groundwater was expected, nor for secondary poisoning via the terrestrial food chain, but the risk of secondary poisoning via the aquatic food chain could not be excluded. The Panel concluded that 60 mg narasin/kg feed was efficacious in controlling coccidiosis in chickens for fattening., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

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 of propyl gallate as a technological feed additive for all animal species. In its previous opinions on the safety and efficacy of the product, the FEEDAP Panel could not conclude on a safe level of propyl gallate for cats and on the safety for the consumer. Based on the new data provided, the FEEDAP Panel concluded that propyl gallate at a maximum concentration of 71 mg/kg complete feed is safe for cats. Propyl gallate is considered safe for the consumer when used in complete feed for all animal species at the concentrations considered safe for the target species., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

The European Commission requested EFSA to provide an update of the 2012 Scientific Opinion of the Panel on Contaminants in the Food Chain (CONTAM) on the risks for animal health related to the presence of ergot alkaloids (EAs) in feed. EAs are produced by several fungi of the Claviceps and Epichloë genera. This Opinion focussed on the 14 EAs produced by C. purpurea (ergocristine, ergotamine, ergocornine, α- and β-ergocryptine, ergometrine, ergosine and their corresponding 'inine' epimers). Effects observed with EAs from C. africana (mainly dihydroergosine) and Epichloë (ergovaline/-inine) were also evaluated. There is limited information on toxicokinetics in food and non-food producing animals. However, transfer from feed to food of animal origin is negligible. The major effects of EAs are related to vasoconstriction and are exaggerated during extreme temperatures. In addition, EAs cause a decrease in prolactin, resulting in a reduced milk production. Based on the sum of the EAs, the Panel considered the following as Reference Points (RPs) in complete feed for adverse animal health effects: for pigs and piglets 0.6 mg/kg, for chickens for fattening and hens 2.1 and 3.7 mg/kg, respectively, for ducks 0.2 mg/kg, bovines 0.1 mg/kg and sheep 0.3 mg/kg. A total of 19,023 analytical results on EAs (only from C. purpurea ) in feed materials and compound feeds were available for the exposure assessment (1580 samples). Dietary exposure was assessed using two feeding scenarios (model diets and compound feeds). Risk characterisation was done for the animals for which an RP could be identified. The CONTAM Panel considers that, based on exposure from model diets, the presence of EAs in feed raises a health concern in piglets, pigs for fattening, sows and bovines, while for chickens for fattening, laying hens, ducks, ovines and caprines, the health concern related to EAs in feed is low., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2024 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the assessment of the application for the renewal of the authorisation of zinc chloride hydroxide monohydrate as a nutritional feed additive for all animal species (3b609). The applicant reported changes in the production process and requested a change in the specification of the additive. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) confirms that the use of the additive under the current authorised conditions of use is safe for the target species and the consumers. The use of the additive in animal nutrition at the proposed use levels for the terrestrial species and land-based aquaculture systems is considered safe for the environment. The FEEDAP Panel cannot conclude on the safety of the additive for marine sediment compartment, when it is used in sea cages. The additive is an eye irritant, but not irritant to the skin and not a skin sensitiser. The exposure through inhalation is likely, but in the absence of data, the Panel is not in a position to conclude on the risk of exposure by inhalation. There was no need for assessing the efficacy of the additive in the context of the renewal of the authorisation., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of phenylcapsaicin (aXiphen®) as a zootechnical additive (functional group: physiological condition stabilisers) in feed for chickens for fattening. The additive under assessment, phenylcapsaicin, is safe for chickens for fattening up to the maximum proposed use level of 15 mg/kg complete feed. A margin of safety could not be established. Phenylcapsaicin is not genotoxic. The reference point for phenylcapsaicin derived from a 90-day repeated dose oral toxicity study in rats is 37.2 mg/kg body weight (bw) per day, the lowest of the model averaged BMDL 20 values for alanine aminotransferase increase in plasma. The metabolic similarity in the laboratory animals and the target species was not demonstrated and the identity of the marker residue could not be established. In the absence of such data, the safety for the consumers could not be evaluated. The inhalation exposure of phenylcapsaicin (as liquid) for the user was considered unlikely. The FEEDAP Panel considered the additive irritant to the eyes but not to the skin and it is not a dermal sensitiser. In the absence of appropriate data, the environmental risk assessment for phenylcapsaicin could not be performed. It is unlikely that phenylcapsaicin bioaccumulates in the environment and the risk of secondary poisoning is considered low. The FEEDAP Panel could not conclude on the efficacy of the additive in chickens for fattening at the proposed conditions of use., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the assessment of the application for the renewal of the authorisation of folic acid as a nutritional feed additive. The additive is authorised for use in feed and water for drinking for all animal species. The applicant provided evidence that the additive currently in the market complies with the existing conditions of authorisation and the production process has not been modified. The FEEDAP Panel considers that there is no evidence to revise the conclusions reached in the previous assessment for the safety for the terrestrial species, consumers and for the environment. The use of folic acid in aquatic animal species to cover their nutritional needs is considered safe. However, the Panel is not in a position to set a maximum safe level for all fish and crustacean species. Considering the narrow margin between the requirement and the tolerated levels seen in some aquatic animal species, the FEEDAP Panel considers that supplementation should not exceed the requirements of the different aquatic animal species. The additive is neither a skin irritant nor a dermal sensitiser. The exposure through inhalation is likely. Due to the lack of data, the FEEDAP Panel is not in the position to conclude on the potential of folic acid to be harmful to the respiratory system and irritant to eyes. The Panel retains that the previously made conclusion on the efficacy remains valid., Competing Interests: If you wish to access the declaration of interests of any expert contributing to an EFSA scientific assessment, please contact interestmanagement@efsa.europa.eu., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

In 2004, the EFSA Panel on Contaminants in the Food Chain (CONTAM) adopted a Scientific Opinion on the risks to animal health and transfer from feed to food of animal origin related to the presence of ochratoxin A (OTA) in feed. The European Commission requested EFSA to assess newly available scientific information and to update the 2004 Scientific Opinion. OTA is produced by several fungi of the genera Aspergillus and Penicillium . In most animal species it is rapidly and extensively absorbed in the gastro-intestinal tract, binds strongly to plasma albumins and is mainly detoxified to ochratoxin alpha (OTalpha) by ruminal microbiota. In pigs, OTA has been found mainly in liver and kidney. Transfer of OTA from feed to milk in ruminants and donkeys as well as to eggs from poultry is confirmed but low. Overall, OTA impairs function and structure of kidneys and liver, causes immunosuppression and affects the zootechnical performance (e.g. body weight gain, feed/gain ratio, etc.), with monogastric species being more susceptible than ruminants because of limited detoxification to OTalpha. The CONTAM Panel considered as reference point (RP) for adverse animal health effects: for pigs and rabbits 0.01 mg OTA/kg feed, for chickens for fattening and hens 0.03 mg OTA/kg feed. A total of 9,184 analytical results on OTA in feed, expressed in dry matter, were available. Dietary exposure was assessed using different scenarios based on either model diets or compound feed (complete feed or complementary feed plus forage). Risk characterisation was made for the animals for which an RP could be identified. The CONTAM Panel considers that the risk related to OTA in feed for adverse health effects for pigs, chickens for fattening, hens and rabbits is low., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the assessment of the application for the renewal of the authorisation of dicopper chloride trihydroxide as a nutritional feed additive. The additive is currently authorised for use in all animal species (3b409). The applicant is requesting a modification in the current authorising specification: (i) replacing the alpha crystal form paratacamite with clinoatacamite; (ii) removing the ratio between crystal polymorphs from the authorising specification; (iii) changing the minimum for particles below 50 μm from 1% to 5%. The FEEDAP Panel considers that the proposed modifications do not introduce concern for the safety for the target species and that the additive remains safe for the target species and the consumers when used up to the maximum authorised levels. Regarding the safety for the environment, the use of the additive in feed for terrestrial animals and land-based aquaculture is considered safe under the proposed conditions of use. The data available do not allow the FEEDAP Panel to reach a conclusion on the safety of the additive for marine sediment when it is used in sea cages. The additive is not corrosive to skin, but is an eye and skin irritant. Due to the nickel presence, it is considered a skin and respiratory sensitiser. There is no need for assessing the efficacy of the additive in the context of the renewal of the authorisation., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the assessment of the application for renewal of authorisation of 25-hydroxycholecalciferol as a feed additive for pigs and poultry. The applicant provided data demonstrating that the additive currently in the market complies with the conditions of authorisation. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concludes that the additive does not give raise to any safety concern regarding the production strain. Considering that the manufacturing process, the composition of the additive and its conditions of use have not been modified, the Panel considers that there is no evidence to reconsider the conclusions reached in the previous assessments. Therefore, the Panel concludes that 25-OH-D 3 remains safe for the target species, the consumer and the environment under the existing conditions of the authorisation. The additive is not irritant to the skin or eyes but no conclusion on its potential to be a skin sensitiser or on its effects on the respiratory system can be reached due to absence of data. There is no need to assess the efficacy of the additive in the context of the renewal of the authorisation., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of 25-hydroxycholecalciferol monohydrate produced with Saccharomyces cerevisiae CBS 146008 as a nutritional feed additive for all ruminants. The additive is already authorised for use with chickens for fattening, turkeys for fattening, other poultry and pigs. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded that the additive does not give raise to any safety concern regarding the production strain. The additive is safe for cattle for fattening and dairy cows at the maximum recommended use level of 0.1 mg 25-OH-D 3 /kg complete feed. This conclusion can be extended to other cattle categories and extrapolated to all ruminant species. The use of 25-OH-D 3 in all ruminants under the proposed conditions of use is considered safe for the consumer. The additive is not irritant to the skin or eyes. No conclusion on its potential to be a skin sensitiser or on its effects on the respiratory system can be reached due to absence of data. The use of the additive under assessment at the recommended conditions of use is considered safe for the environment. 25-OH-D 3 is an efficient source of vitamin D 3 for all ruminants when used according to the proposed conditions of use., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a feed additive consisting of 25-hydroxycholecalciferol (produced by Pseudonocardia autotrophica DSM 32858) for all pigs, all poultry for fattening and ornamental birds and other poultry species. The production strain P. autotrophica DSM 32858 is not genetically modified however, uncertainties remain on the possible presence of its viable cells in the final product. Due to the lack of adequate safety data and uncertainty on the presence of nano particles, the FEEDAP Panel cannot conclude on the safety of the additive for the target species and the consumer. The additive was shown not to be irritant to skin or eyes and it is not a skin sensitiser. Considering the low dusting potential of the additive, the FEEDAP Panel concluded that the exposure through inhalation is unlikely. However, the FEEDAP Panel considered that uncertainties remain on genotoxicity and on the possible presence of viable cells of P. autotrophica DSM 32858 in the final product which might have an impact on the safety for the users. The use of the feed additive is considered safe for the environment. The Panel concluded that the additive has a potential to be efficacious under the proposed conditions of use., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of potassium ferrocyanide as a technological feed additive, functional group anticaking agents, for all animal species. The additive potassium ferrocyanide is intended to be used in potassium chloride with a maximum content of 150 mg ferrocyanide anion/kg salt. The use of potassium ferrocyanide is safe, when added to potassium chloride at a maximum content of 150 mg ferrocyanide anions (anhydrous)/kg for: pigs for fattening and lactating sows, sheep, goats, salmon and dogs. In the absence of a margin of safety, the use of potassium chloride according to the proposed conditions of use is not considered to be safe for chickens for fattening, laying hens, turkeys, piglets, veal calf, cattle for fattening, dairy cows, horse, rabbit and cats. In the absence of information on the use of potassium chloride in the diets for any other animal species, no conclusion on a potentially safe level of potassium chloride, supplemented with 150 mg ferrocyanide/kg, can be made. The use of potassium ferrocyanide in animal nutrition is of no concern for consumer safety. The results of in vivo studies showed that potassium ferrocyanide is not irritant to skin and eye and is not a skin sensitiser. However, due to the presence of nickel, the additive should be considered as a respiratory and dermal sensitiser. The available data do not allow the FEEDAP Panel to conclude on the safety of the additive for the soil and the marine environment, while the use of the additive in land-based aquaculture according to the proposed conditions of use is considered of no concern. Potassium ferrocyanide is considered to be efficacious as an anticaking agent when included in potassium chloride at the proposed use levels., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a new scientific opinion on the coccidiostat monensin sodium (Elancoban® G200) when used as a feed additive for chickens for fattening and turkeys. Based on the new data provided, the Panel updates its previous conclusions as follows: monensin sodium is produced by fermentation by a non-genetically modified strain of Streptomyces sp. NRRL B-67924. Genome analysis suggests the production strain may belong to a new species within the genus Streptomyces . The production strain and its DNA were not detected in the final additive. The product is free of antimicrobial activity other than monensin. The FEEDAP Panel cannot conclude on the safety of monensin sodium from Elancoban® G200 in feed for chickens for fattening and chickens reared for laying at the proposed maximum use level due to a dose-related reduction of the final body weight. The toxicological profile of monensin sodium was evaluated in studies made with the product obtained from the parental strain ATCC 15413. Based on a comparison of the genomes of the two strains, the FEEDAP Panel concludes that toxicological equivalence has been established, thus the conclusions already drawn on Elancoban® G200 are valid for the product obtained with the new production strain concluding that the additive is safe for the consumer and the environment; the production strain does not represent an additional risk when safety for the user is considered. Monensin sodium from Elancoban® G200 is safe for turkeys up to 16 weeks of age at the concentration of 100 mg monensin sodium/kg feed and has the potential to control coccidiosis at the minimum concentration of 60 mg/kg complete feed., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a new scientific opinion on the coccidiostat halofuginone hydrobromide (STENOROL®) when used as a feed additive for chickens for fattening and turkeys for fattening/reared for breeding. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concludes that the safety for turkeys for fattening established in its previous opinion can be extended to turkeys for breeding up to 12 weeks of age. Based on the new data provided on the safety for consumer, environment and efficacy, the Panel updates its previous conclusions as follows: halofuginone hydrobromide is not genotoxic. Applying an uncertainty factor of 100 to the lowest no observed adverse effect level (NOAEL) of 0.03 mg/kg body weight (bw) per day, an acceptable daily intake (ADI) of 0.3 μg halofuginone/kg bw is established. The chronic exposure of consumers to residues of halofuginone would amount to 6-19% of the ADI after 3 days of withdrawal. Therefore, the Panel considers that the additive is safe for the consumer of tissues obtained from chickens for fattening and turkeys for fattening fed the additive at a maximum level of 3 mg/kg complete feed at a 3-day withdrawal time. For control purposes, the Panel recommends the setting of the following maximum residue limits (MRLs): liver, 50 μg/kg; kidney, 40 μg/kg; muscle, 3 μg/kg; skin/fat, 10 μg/kg wet tissue. Based on an updated environmental risk assessment, no concern for groundwater is expected. Halofuginone is unlikely to bioaccumulate and the risk of secondary poisoning is not likely to occur. No safety concerns are expected for terrestrial and aquatic environments. The additive has the potential to control coccidiosis in chickens for fattening and turkeys for fattening/reared for breeding up to 12 weeks of age at a minimum level of 2 mg/kg complete feed., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

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 of lignosulphonate, when used as a technological additive (functional group: binders) in feed for all animal species. In two previous assessments, the FEEDAP Panel concluded that the maximum level proposed of 10,000 mg lignosulphonate/kg complete feed is safe for weaned piglets, pigs for fattening, chickens for fattening, laying hens and cattle for fattening, but a margin of safety could not be identified. Consequently, these conclusions could not be extrapolated to other animal species/categories. In the current application, the applicant proposed to reduce the maximum content of lignosulphonate in feed for all animal species to 8,000 mg/kg complete feed. The results of two newly submitted tolerance studies allowed the Panel to conclude that 8,000 mg lignosulphonate/kg complete feed is also safe for dairy cows and salmonids, with a margin of safety of at least 1.25. Considering the results of the studies previously assessed and those of the two new tolerance studies, the FEEDAP Panel concluded that lignosulphonate is safe for all animal species when used at a maximum content of 8,000 mg/kg complete feed., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of potassium and sodium ferrocyanide as technological feed additives for all animal species. The additives sodium- and potassium ferrocyanide are intended to be used in sodium chloride with a maximum content of 80 mg ferrocyanide anion (anhydrous)/kg salt. The FEEDAP Panel concluded that the use of sodium ferrocyanide and potassium ferrocyanide is safe, when added to sodium chloride at a maximum content of 80 mg ferrocyanide anion/kg for: turkey for fattening and laying hens and other laying/breeding birds; all porcine species and categories, all ruminant species and categories, rabbit, horse, salmonids and other minor fin fish, dogs and cats. In the absence of a margin of safety, the use of sodium and potassium chloride according to the proposed conditions of use is not considered to be safe for chickens for fattening and other poultry species for fattening or reared for laying/breeding other than turkeys. In the absence of information on the use of sodium chloride in the diets for any other animal species, no conclusion on a potentially safe level of sodium chloride, supplemented with 80 mg ferrocyanide anions (anhydrous)/kg, could be made. The use of sodium and potassium ferrocyanide in animal nutrition under the conditions of use proposed is of no concern for consumer safety. The results of in vivo studies showed that sodium and potassium ferrocyanide are not irritant to skin and eye and are not skin sensitisers. However, owing to the presence of nickel, sodium ferrocyanide, is considered a dermal and respiratory sensitiser. No conclusions could be reached on the safety of the user exposed via inhalation for potassium ferrocyanide. The use of sodium and potassium ferrocyanide as feed additives is considered safe for the environment. The additives are considered to be efficacious as anticaking agents in sodium chloride at the proposed use level., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a pancreatic extract (Pan-zoot) as a zootechnical additive for dogs. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) could not conclude on the safety of Pan-Zoot as a feed additive for dogs under the proposed conditions of use. The FEEDAP Panel could not conclude on the skin/eye irritancy potential of the additive or on the dermal sensitisation potential. Owing to its proteinaceous nature, the additive is considered a respiratory sensitiser. The additive may induce allergic reactions to the exposed users. The Panel concluded that there is no need for an environmental risk assessment. The FEEDAP Panel could not conclude on the efficacy of the product as a feed additive at the recommended conditions of use., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

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 feed additive consisting of robenidine hydrochloride (Cycostat® 66G) for rabbits for breeding and rabbits for fattening for the renewal of its authorisation. Since the potential aneugenic activity of robenidine hydrochloride cannot be excluded, the FEEDAP Panel is not in the position to conclude on the safety of the additive for the target species and the consumer. In the absence of data, the FEEDAP Panel cannot conclude on the safety of robenidine hydrochloride for the environment. Robenidine hydrochloride has potential for bioaccumulation; however, a risk for secondary poisoning for worm/fish-eating birds and mammals is not likely to occur. No concern for groundwater is expected. Robenidine hydrochloride is not a skin or eye irritant and not a skin sensitiser. Due to the lack of data on the genotoxicity (aneugenicity) of the substance, the exposure to the additive of the unprotected users should be minimised. Owing to the lack of sufficient data, the FEEDAP Panel cannot conclude that robenidine hydrochloride from Cycostat® 66G is still efficacious against recent Eimeria spp. strains in rabbits., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of semi-refined carrageenan as a feed additive for cats and dogs. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded that semi-refined carrageenan was safe for dogs at 6,000 mg/kg final wet feed (with about 20% dry matter). This would correspond to 26,400 mg semi-refined carrageenan/kg complete feed (with 88% dry matter). In the absence of specific data, the maximum concentration of the additive considered safe for cats was 750 mg semi-refined carrageenan/kg final wet feed, corresponding to 3,300 mg semi-refined carrageenan/kg complete feed (with 88% dry matter). In the absence of data, the FEEDAP Panel was not in the position to conclude on the safety of carrageenan for the user. The additive under assessment is intended to be used in dogs and cats only. No environmental risk assessment was considered necessary for such use. The FEEDAP Panel was not in the position to conclude on the efficacy of semi-refined carrageenan as a gelling agent, thickener and stabiliser in feed for cats and dogs at the proposed conditions of use., (© 2023 European Food Safety Authority. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of the coccidiostat lasalocid A sodium (Avatec® 150G) for chickens for fattening and chickens reared for laying. Taking into account the results of all tolerance studies submitted for the re-evaluation of the additive, the FEEDAP Panel considers that lasalocid A sodium from Avatec® 150G is safe at a maximum content of 90 mg/kg complete feed for chickens for fattening. A margin of safety cannot be established. No conclusion on the safety of lasalocid for chickens reared for laying can be made. Three new floor pen studies showed efficacy of 90 mg lasalocid A sodium/kg complete feed reducing the adverse clinical consequences of an Eimeria infection in chickens for fattening. Considering also the previously reported positive floor pen study and the three positive anticoccidial sensitivity tests, the FEEDAP Panel can conclude on an efficient coccidiostatic level of 90 mg lasalocid A sodium/kg complete feed for chickens for fattening. This conclusion is extended to chickens reared for laying., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety for the target species of the coccidiostat halofuginone hydrobromide from STENOROL® when used as a feed additive for chickens for fattening and turkeys. In its previous assessment, the FEEDAP Panel could not conclude on the safety of STENOROL® for the target species at the highest proposed use level of 3 mg halofuginone hydrobromide/kg complete feed. On the basis of the new data provided, the FEEDAP Panel updates its previous conclusions on the safety for the target species as follows: halofuginone hydrobromide from STENOROL® is safe for chickens for fattening and for turkeys up to a maximum of 12 weeks of age at the highest proposed concentration of 3 mg/kg complete feed. For chickens for fattening, a margin of safety of about 1.3 can be established while for turkeys for fattening a margin of safety cannot be established., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of glyceryl polyethyleneglycol ricinoleate (PEG castor oil) as technological feed additive for all animal species. PEG castor oil is safe at a maximum concentration in complete feed of 90 mg/kg for chickens for fattening and other minor growing poultry; 134 mg/kg for laying hens and other laying/breeding birds kept for egg production/reproduction; 121 mg/kg for turkeys for fattening; 162 mg/kg for piglets and other minor growing Suidae ; 194 mg/kg for pigs for fattening; 236 mg/kg for sows other minor reproductive Suidae ; 231 mg/kg for dairy cows and other dairy ruminants (other than sheep/goats); 142 mg/kg in rabbits and 377 mg/kg in veal calves; 356 mg/kg for cattle for fattening and other growing ruminants, sheep, goat, horses and cats; 427 mg/kg for dogs; 407 mg/kg for salmonids and other fin fish; and 1,584 mg/kg for ornamental fish. For other growing species and non-food producing animals, the additive is considered safe at 90 mg/kg complete feed. The use of PEG castor oil as feed additive for all animal species would be of no concern for the consumer. The FEEDAP Panel considered inhalation exposure of the user to the additive unlikely. PEG castor oil is not considered a skin sensitiser. The panel was not in the position to conclude on the potential of the additive to be a skin or eye irritant. The additive is a readily biodegradable substance and is not expected to pose a risk for the environment. The lack of sufficient data does not allow the FEEDAP Panel to conclude on the efficacy of PEG castor oil as an emulsifier in feedingstuffs., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the re-evaluation of the safety and efficacy of carmine (sensory additive, functional group: colourants - substances that add or restore colour in feeds) for cats and dogs. The additive consists of aluminium lakes of carminic acid (carmines), which are complexes of aluminium and carminic acid. Carminic acid, produced from the female insect Dactylopius coccus Costa, is the colouring principle and is present in the final additive at 50%. The additive does not pose a risk concerning genotoxicity and is considered safe for dogs and cats at 264 and 220 mg Carmine/kg feed, respectively (which correspond to 132 and 110 mg carminic acid/kg feed, respectively). Due to the nature of the additive, the FEEDAP Panel concluded that allergic reactions may occur in the target species following the ingestion of feeds containing the additive. The FEEDAP Panel concluded that the exposure of users by inhalation is very likely, and that carmine is a respiratory and skin sensitiser; however, due to the lack of data, a conclusion cannot be reached on the potential skin and eye irritation of the additive. The additive is considered to be efficacious in feeds for dogs and cats under the proposed conditions of use., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Calcifying pseudoneoplasms of the neuraxis (CAPNONs) are uncommon benign lesions that are rarely diagnosed radiographically. We report an unusual case of a left middle cerebellar peduncle CAPNON with vasogenic edema and a perilesional cyst. The patient was a 36-year-old woman with a 20-year history of left-sided hearing loss that had recently progressed. Computed tomography and magnetic resonance imaging showed a heterogenous calcified lesion with vasogenic edema and a perilesional cyst in the left middle cerebellar peduncle. Although it is a rare radiographic feature of CAPNON, vasogenic edema should be included as a possible feature of this uncommon tumefactive lesion., Competing Interests: Conflict of Interest None declared., (Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ ).)

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of Solanum glaucophyllum leaf extract (SGE) as a nutritional additive for dairy cows and other dairy ruminants. However, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) considered the glycosides of 1,25-dihydroxycholecalciferol (1,25[OH] 2 D 3 ) as the active substance and the bolus containing SGE-derived 1,25[OH] 2 D 3 as the preparation of the additive. The product is intended to be administered to dairy ruminants during the pre-parturient (period from 9 days before calving to immediately before calving). The FEEDAP Panel concluded that the administration of one bolus, the preparation of the additive as applied in the animal studies evaluated, containing 500 μg of SGE-derived 1,25[OH] 2 D 3 during the pre-parturient period is safe for cows. Owing to the lack of data, the Panel could not conclude on the safety for of a subsequent administration of a second bolus or on the safety of another SGE-derived 1,25[OH] 2 D 3 preparation for use in dairy ruminants other than cows ( Bos taurus ). The Panel considered that, under the specified conditions of use, the product is safe for the consumer and the environment. The bolus, a preparation containing SGE, as a source of the active substance, is not irritating to skin and eyes and it is not a sensitiser. Exposure via inhalation is unlikely. The Panel concluded that the administration of the bolus, the preparation of the additive as applied in the animal studies evaluated, containing 500 μg of SGE-derived 1,25[OH] 2 D 3 in a period from 9 days before calving to immediately before calving has the potential to prevent hypocalcaemia in dairy cows. Owing to the lack of data with another preparation, the Panel could not conclude on the efficacy in other dairy ruminants., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Following a request from the European Commission, the Panel on Additives and Products or substances used in Animal Feed (FEEDAP Panel) was asked to deliver a scientific opinion on the safety of the coccidiostat Aviax 5% (semduramicin sodium) when used in feed for chickens for fattening. In a previous assessment, the FEEDAP Panel could not conclude on the taxonomical identification of the production strain at species level and on the absence of genetic determinants for antimicrobial resistance. In addition, the Panel could not conclude on the safety for the target animals and could not set maximum residue limits to protect consumers. Regarding the safety for the environment, although the use of the additive was considered safe for the terrestrial compartment, a risk for the aquatic compartment and for groundwater pollution could not be excluded. Based on the new data provided, the FEEDAP Panel concludes that there are no safety concerns for the target animals, consumer, user and environment regarding the production strain of semduramicin sodium. Based on the results in the tolerance trial, the FEEDAP Panel concludes that the additive is safe for chickens for fattening up to the maximum recommended level (25 mg/kg complete feed), but no margin of safety can be established. The use of semduramicin sodium at a maximum level of 25 mg/kg complete feed for chickens for fattening is safe for consumers with no withdrawal time. Based on the new data provided and the current requirements for environmental risk assessment, the use of semduramicin sodium from Aviax 5% in feed for chickens for fattening up to 25 mg/kg complete feed does not pose a risk for groundwater nor for aquatic and sediment compartments, while a risk for the terrestrial compartment cannot be excluded. The bioaccumulation and the risk for secondary poisoning are considered to be low., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

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 butylated hydroxytoluene (BHT) as a feed additive for all animal species. The additive BHT is considered safe for chickens for fattening and weaned piglets at the maximum proposed concentration of 150 mg/kg complete feed. This conclusion is extended to chickens reared for laying and extrapolated to pigs for fattening. In the absence of data, no conclusion on the safety for the other target species could be drawn. The exposure of the consumer to BHT from tissues and products of animals fed the additive ranged from 1% to 3% of the acceptable daily intake (ADI). The FEEDAP Panel concluded that the use of BHT as a feed additive at the proposed conditions of use is of no concern for the safety of the consumers. Exposure of the user to BHT via inhalation is likely; however, the Panel is not in the position to conclude on the potential inhalation toxicity of the additive. BHT is a skin and eye irritant, no conclusions can be drawn on the potential of the additive to be a skin sensitiser. In the absence of data, the FEEDAP Panel cannot conclude on the safety of BHT for the environment. The additive BHT is considered an efficacious antioxidant in feedingstuffs for all animal species., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

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 guanidinoacetic acid (GAA) when used as nutritional additive in feed and water for drinking for all animal species. The FEEDAP Panel concludes that GAA at 1,200 mg/kg complete feed is safe for chickens for fattening, piglets and pigs for fattening. This concentration in complete feed would correspond to maximum concentrations in water of 600 mg GAA/L for chickens for fattening, piglets and pigs for fattening. The Panel is not in a position to conclude on a safe level of GAA in laying/reproductive birds. In the absence of data on ruminants and salmonids, the FEEDAP Panel cannot conclude on the safety of GAA for all animal species. There is no concern on consumer safety resulting from the use of GAA in feed for poultry and pigs at the proposed conditions of use. The limited data do not allow to conclude on the safety for the consumer when the additive is used in feed for ruminants or fish. GAA is not toxic by inhalation, it is not an irritant to skin and eyes, and it is not a dermal sensitiser. The FEEDAP Panel concludes that the use of GAA as feed additive is not expected to pose a risk to the environment. The use of the additive under assessment in animal nutrition at the proposed conditions of use has the potential to be efficacious in all growing avian, Suidae and ruminant (except for preruminants) species; in growing fin fish other than salmonids and in frog. It is not possible to conclude on the efficacy of the additive in other species, and in reproductive animals., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

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 butylated hydroxytoluene (BHT) as a feed additive for all animal species. The additive BHT is considered safe for chickens for fattening and weaned piglets at the maximum proposed concentration of 150 mg/kg complete feed. This conclusion is extended to chickens reared for laying and extrapolated to pigs for fattening. In the absence of data, no conclusion on the safety for the other target species could be drawn. The exposure of the consumer to BHT from tissues and products of animals fed the additive ranged from 1% to 3% of the acceptable daily intake (ADI). The FEEDAP Panel concluded that the use of BHT as a feed additive at the proposed conditions of use is of no concern for the safety of the consumers. Exposure of the user to BHT via inhalation is likely; however, the Panel is not in the position to conclude on the potential inhalation toxicity of the additive. BHT is a skin and eye irritant, no conclusions can be drawn on the potential of the additive to be a skin sensitiser. In the absence of data, the FEEDAP Panel cannot conclude on the safety of BHT for the environment. The additive BHT is considered an efficacious antioxidant in feedingstuffs for all animal species., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Microbial methane production (methanogenesis) is responsible for more than half of the annual emissions of this major greenhouse gas to the atmosphere. Although the stable isotopic composition of methane is often used to characterize its sources and sinks, strictly empirical descriptions of the isotopic signature of methanogenesis currently limit these attempts. We developed a metabolic-isotopic model of methanogenesis by carbon dioxide reduction, which predicts carbon and hydrogen isotopic fractionations, and clumped isotopologue distributions, as functions of the cell's environment. We mechanistically explain multiple isotopic patterns in laboratory and natural settings and show that these patterns constrain the in situ energetics of methanogenesis. Combining our model with data from environments in which methanogenic activity is energy-limited, we provide predictions for the biomass-specific methanogenesis rates and the associated isotopic effects.

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 l-glutamic acid and monosodium l-glutamate monohydrate produced by fermentation using the genetically modified strain Corynebacterium glutamicum NITE BP-01681. The additives are intended to be used in feed and water for drinking for all animal species and categories as nutritional additives (amino acids) or as sensory additives (flavouring compounds). Viable cells of the production strain and its DNA were not detected in the final additives. The additives do not give rise to any safety concern regarding the production strain. l-Glutamic acid and monosodium l-glutamate monohydrate produced using C. glutamicum NITE BP-01681 are considered safe for the target species, for the consumer and for the environment. However, the Panel raised concerns on the use in water for drinking for hygienic reasons. The additives are considered not irritant to skin or eyes and not dermal sensitisers but a risk by inhalation. The Panel concluded that the additives are efficacious as nutritional additives and as flavouring compounds., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Ethoxyquin is synthetised from p-phenetidine, a possible mutagen, which remains in the additive as an impurity at concentrations of < 2.5 mg/kg additive. Ethoxyquin is considered safe for all animal species at the proposed inclusion level of 50 mg/kg complete feed. However, owing the presence of p-phenetidine, no safe level of the additive in feed for long-living and reproductive animals could be identified. The FEEDAP Panel derived a health-based guidance value of 0.006 mg ethoxyquin dimer (EQDM)/kg bw per day and applied it to the sum of ethoxyquin and its transformation products. A maximum total concentration of 50 mg ethoxyquin/kg complete feed for all animal species, except dairy ruminants, would not pose a risk for the consumer. However, in the absence of data on p-phenetidine residues in tissues and products of animal origin, no conclusion on the safety for the consumer could be drawn. The conclusions on consumer safety assume that the maximum total concentration of 50 mg EQ/kg feed is expressed as the sum of EQ, EQDM, EQI and DHEQ. Exposure of the unprotected user to p-phenetidine via inhalation should be minimised. No safety concerns for groundwater are expected. It is not possible to conclude on the safety of EQ for the terrestrial compartment. A risk for the aquatic compartment cannot be excluded when ethoxyquin is used in terrestrial animals. Unacceptable risk is not expected for freshwater sediment-dwelling organisms. A risk of secondary poisoning via the terrestrial food chain is not expected, whereas a risk via the aquatic food chain cannot be excluded. No concerns for aquatic organisms are expected for ethoxyquin used in fish farmed in land-based system, a risk cannot be excluded for marine sediment dwelling organisms when ethoxyquin is used in sea-cages. Ethoxyquin is considered efficacious in the range 25-50 mg/kg complete feed., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)

Following a request from the European Commission, the Panel on Additives and Products or substances used in Animal Feed (FEEDAP Panel) was asked to deliver a scientific opinion on the efficacy of the coccidiostat nicarbazin (Coxar ® ) when used in feed for turkeys for fattening. On the basis of the new data provided, the FEEDAP Panel updated its previous conclusions on the efficacy of Coxar ® as follows: the two new floor pen studies showed efficacy of nicarbazin from Coxar ® reducing the adverse clinical consequences of an Eimeria infection in turkeys. Overall, when considering also the positive floor pen study previously reported and the three positive anticoccidial sensitivity tests, the FEEDAP Panel concludes that Coxar ® has the potential to be efficacious against coccidiosis of turkeys for fattening at 100 mg nicarbazin/kg complete feed., (© 2022 Wiley‐VCH Verlag GmbH & Co. KgaA on behalf of the European Food Safety Authority.)