The level of ash insoluble in hydrochloric acid shall not exceed 3.3% of the dry matter in the case of compound feedingstuffs composed mainly of rice by-products and 2,2% of the dry matter in other cases. However, the 2,2% level may be exceeded in the case of:
- compound feedingstuffs containing authorized mineral binding agents,
- compound feedingstuffs containing more than 50% of sugar beet chips or sugar beet pulp,
- compound feedingstuffs intended for farmed fish with a fish meal content of over 15%, provided that the level is declared as a percentage of the feedingstuff as such.