The standardised ileal digestible lysine requirement of 7 to 16 kg weaned pigs fed an antibioticfreediet

摘要

Implications Lysine requirement of weaned pigs was not affected by absence of in-feed antibiotics since it was similar toNRC (2012) recommendations whose lysine estimate was derived from many experiments with diets containing in-feedantibiotics.Introduction A ban in the use of sub-therapeutic levels of antibiotics in pigs’ diets as growth promoters may cause changesin their performance and could affect their amino acids (AA) requirement (Bikker et al., 2006). Most of the publishedstudies that determined lysine (Lys) requirement and have been used to make recommendations had diets that containedantibiotics (NRC, 2012). Thus, there is a need to evaluate the dietary Lys levels that would maximize performance underantibiotic-free feeding regimen. The objective of this experiment was to determine standardised ileal digestible (SID) Lysrequirement for weaned pigs fed antibiotic-free diets.