A potential ban on zinc oxide (ZnO) in the European Union is likely to meet a lot of opposition from countries like e.g. the United Kingdom and Denmark.
Zinc oxide in pigs is often used in feed to combat post-weaning diarrhoea. The additive however may be on its way out in the European Union after an EU advisory body recommended to withdraw the permission to use the feed additive.
Source: Pig Progress 23 dec 2016