Results
There was a high content of CP and total AA, and the oligopeptide content accounted for over 900 g/kg of CP in EFM(Table 1). The AID or SID of each in dispensable AA in EFM was greater than 0.70 or 0.76, and the concentrations of SID Met and Trp were lowest (Table 4). Piglets fed EFMD improved final BW and ADG by 0.08 and 0.15, or 0.07 and 0.13 (P < 0.05) compared with Control or DPSD (Table 5). There was no substantial treatment effect on ADFI, while feed conversion efficiency (G:F) tended to in crease (P = 0.08). No statistical differences were detected between EFMD and SDPPD in growing performance. Apparent total tract digestibility (ATTD) of nutrients was not different among treatments, whereas the fecal score tended to be lower in SDPPD,DPSD and EFMD than Control on d 0–14 (P = 0.09).
Diets supplemented with EFM improved (P < 0.05) IgG content by 0.19 vs. Control, and tended to decrease IL-1 in serum(P = 0.07) compared with Control (Table 6). The ratio of villus height to crypt depth in duodenum was increased (P < 0.05), and villus height in duodenum (P = 0.06),
jejunum (P = 0.08) and ileum (P = 0.09) tended to increase for piglets fed with EFMD in contrast with Control and SDPPD (Table 7).