L-lysine sulphate is a light brown granulate produced from fermentation with C. glutamicum, (EC) 1831/2003. The minimum lysine content is 55% and in addition, the product contains a mix of other components, including methionine, threonine and phosphorus.

In both poultry and pigs, L-lysine sulphate is a good alternative to, for example, L-lysine HCl, with trials even appearing to show an advantage in favour of the L-lysine sulphate (Bahadur et al., 2010; Lie et al., 2019, Palencia et al., 2019). Trials suggest that this advantage may be a result of the sulphate fraction. For example, in piglets, sulphur has been seen to significantly improve feed conversion, possibly as an effect of an optimised microbiome as demonstrated through direct measurements as well as indirect ones such as lowering the pH of manure (Kerr et al., 2010).



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