Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) was asked to deliver a scientific opinion on the safety and efficacy of a copper(II)-betaine complex as nutritio nal feed additive for all animal species. ba sed on the results of a tolerance study carried out in chicken, the FEEDAP Panel co ncluded that the additive is safe for chickens for fattening when used up to the current maximum authorised levels of copper in feed; this co nclusion was extrapolated to all animal species and categories at the respective maximum copper levels in complete feed authorised in the European Unio n. The FEEDAP Panel co ncluded that the use of the copper(II)-betaine complex in animal nutrition at the maximum copper levels authorised for the animal species poses no co ncern to the safety of consumers. Regarding the safety for the environment, the use of the additive in feed for terrestrial animals and land-ba sed aquaculture is co nsidered safe under proposed co nditions of use. The data available do not allow the co nclusion to be made on the safety of the additive for marine sediment when it is used in sea cages. The additive is not a skin irritant, but it is an irritant to the eyes. Due to the traces of nickel, the additive is co nsidered to be a respiratory and skin sensitiser. The Panel could not co nclude on the efficacy of the product.

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