AMEn of diets and the coefficients of ileal apparent digestibility (CIAD) and total tract apparent digestibility (CTTAD) of broiler chickens fed diets A–H is presented in Table 5. It can be seen that CIAD of protein varied from 0.717 (diet C) to about 0.760 (diet A) with no significant difference between reatments.Addition with either BFP (dietC),lactase(diet D) or Gal-II (diet G) improved the CIAD of fat, compared to the control diet B, obtaining values close to diet A with soya bean meal. The CIAD of fat was lower in diets F and H, however, being on average 0.680 and significantly different (P