Lysine is the first limiting amino acid in feeds for pig and the second for poultry. The amount of lysine ingested on a daily basis has a direct influence on animal growth performances as this amino acid mainly serves to deposit body protein. Thus, adjusting the dietary lysine concentration according to the animal growth potential and its feed intake capacity makes it possible not only to optimize growth but also to optimize feed efficiency. Moreover, in broiler chicken, there is a direct link between daily lysine supply and the development of certain muscles such as breasts. Therefore, adjusting lysine content enhances the value of meat cuts in case of further  processing.

 

 

 

L-Lysine supplementation in monogastric feeds (pig, poultry and others) represents a simple, effective and accurate way of adjusting lysine content to an animal's requirements in order to optimize the technico-economic result of production. L-Lysine also makes it possible to limit the use of protein-bound lysine which is contained in vegetal protein such as soybean meal; this in turn reduces dietary protein levels  and, as a consequence, reduces nitrogen excretion from animal husbandry in the environment. Moreover, as L-Lysine is 100% digestible, its utilization by the animal is far greater than that of protein-bound lysine from vegetal protein.

 

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For these reasons, L-Lysine is now the leading amino acid used in pig and poultry feeds both with regard to quantity and frequency of supplementation. Its use is common feeds for rabbits and preruminant calves and it is quickly developing in fish feeds and aquaculture and petfood. The results of the feed surveys which we regularly carry out throughout Europe have shown us that frequency of L-Lysine supplementation is greater than 90% in commercial pig and poultry feeds, irrespective of the stage of the animal’s growth.

 

More on "Amino acid nutrition of the broiler chicken Update on lysine, threonine and other amino acids"