The present invention relates to methods for improving the durability of pelleted animal feeds, reducing the production of fines from pelleted feeds and for reducing losses during handling after manufacture of pelleted animal feeds that commonly contain a mix of processed grains and optionally fats (both animal and vegetable), proteins (both animal and vegetable) and minerals by the addition of alkali metal or alkaline earth metal sulfite, bisulfite, metabisulfite, sulfate or mixtures thereof.
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