The experimental designs and procedures were approved by the Committee for Animal Care and Use of Nanjing Agricultural University. A total of 384 newly hatched Arbor Acres broiler chicks were randomly allocated to 4 treatments for a 42-d feeding trial, which included a starter phase (1 to 21 d) and a grower phase (22 to 42 d). Each treatment had 6 replicate pens with 16 birds per pen. The average initial BW did not differ among the 4 groups. The contents of 1, 2, and 3% FSBM were formulated in the diet with 50% FSBM to replace FM or CGM and the other 50% to replace SBM; the contents of