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The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the application for renewal of authorisation of zinc chelate of hydroxy analogue of methionine (Mintrex®Zn) for all animal species. The FEEDAP Panel has delivered three opinions (during 2008 and 2009) on the safety and efficacy of the additive. The additive was authorised in 2010 as 'Zinc chelate of hydroxy analogue of methionine' containing 17.5-18 % zinc, 81 % (2-hydroxy-4-methylthio)butanoic acid (dl-methionine