Whereas it is therefore necessary to restrict phosphorus emissions to an absolute minimum; whereas the compulsory indication of phosphorus content on the labelling of compound feedingstuffs for fish would make a significant contribution to that objective by facilitating good feeding practice.
The above sentence is very complicated. Please provide me a simplified synonymous version consisting of multiple sentences:
Phosphorus emissions must therefore be avoided as far as possible . Labeling rules for compound feed for fish with mandatory indication of the phosphorus content can make an important contribution , as this makes it easier for breeders to apply good feeding practice .