The quantity of additives that also exists in the natural state in certain feed materials shall be calculated so that the total of the elements added and the elements present naturally does not exceed the maximum level provided for in the authorisation Regulation.

Mixing of additives shall be permitted only in premixtures and feedingstuffs where there is physico-chemical and biological compatibility between the components of the mixture in relation to the effects desired.

Supplementary feedingstuffs, diluted as specified, may not contain levels of the additives which exceed those fixed for complete feedingstuffs.

In the case of premixtures containing silage additives the words ‘of silage additives’ must clearly be added on the label after ‘PREMIXTURE’.