Three experiments were conducted to compare the digestible (DE), metabolizable energy (ME), and standardized ileal digestibility (SID) of amino acids (AA) in fermented corn germ meal (FCGM) and soybean meal (SBM), and evaluate the effects of FCGM replacing SBM in growing pig diets. In Exp. 1, 18 barrows with initial body weight (BW) of 60.2 ± 3.40 kg were randomly allotted to 3 treatments with 6 replicates per treatment. The control diet used corn as the only energy ingredient, and 2 test diets were made by replacing 25.8% of corn with FCGM or SBM. The DE and ME of FCGM were less (P < 0.01) than those of SBM. In Exp. 2, 18 barrows (59.3 ± 2.52 kg BW) with ileal T-cannulas were randomly allotted to 3 treatments with 6 replicates per treatment. The SID of arginine, tryptophan and proline were greater (P < 0.05) and the tyrosine was less (P = 0.01) in SBM compared with FCGM. In Exp. 3, 144 growing pigs (56.1 ± 5.22 kg BW) were randomly allotted to 4 treatments with 6 pens per treatment (3 barrows and 3 gilts per pen). Four diets (FCGM0, FCGM10, FCGM20 and FCGM30) were formulated using FCGM to replace 0%, 10%, 20% and 30% of SBM, respectively. The ME and SID values of AA of SBM and FCGM were determined by Exp. 1 and 2. Results showed that increasing FCGM inclusion quadratically (P < 0.05) increased the average daily gain (ADG), average daily feed intake, and the levels of serum immunoglobulin G (IgG) and urea nitrogen, and linearly (P < 0.05) increased the serum IgM, the propanoic acid, butyric acid, total volatile fatty acid (VFA) and the Shannon index of microbiota in feces. Besides, the relative abundance of genus Streptococcus in FCGM0, Lactobacillus in FCGM10 and Lachnospiraceae in FCGM30 were increased (P < 0.05) compared with other treatments. In conclusion, we recommend replacing 11.80% of SBM with FCGM to obtain the optimal ADG of growing pigs. Moreover, as the ratio of FCGM replacing SBM increased in diet, the immunity, intestinal microbiota and total VFA composition of growing pigs were improved.

进行了三个实验，比较发酵玉米胚芽粕（FCGM）和豆粕（SBM）中氨基酸（AA）的消化率（DE）、代谢能（ME）和标准化回肠消化率（SID），并评估效果FCGM 在生长猪日粮中替代 SBM。在 Exp。1, 18 个初始体重 (BW) 为 60.2 ± 3.40 kg 的手推车被随机分配到 3 个处理，每个处理 6 个重复。对照日粮使用玉米作为唯一的能量成分，通过用 FCGM 或 SBM 代替 25.8% 的玉米制成 2 种测试日粮。FCGM 的 DE 和 ME 低于 SBM（P  < 0.01）。在 Exp。2, 18 个带回肠 T 型套管的手推车 (59.3 ± 2.52 kg BW) 随机分配到 3 个处理，每个处理 6 个重复。精氨酸、色氨酸和脯氨酸的 SID 较大（与 FCGM 相比，SBM 中的P  < 0.05）和酪氨酸较少（P  = 0.01）。在 Exp。3, 144 头生长猪 (56.1 ± 5.22 kg BW) 被随机分配到 4 个处理，每个处理 6 个栏（每栏 3 头公猪和 3 头后备母猪）。使用 FCGM 配制了四种日粮（FCGM0、FCGM10、FCGM20 和 FCGM30），分别替代 0%、10%、20% 和 30% 的 SBM。SBM 和 FCGM 的 AA 的 ME 和 SID 值由 Exp 确定。1 和 2. 结果表明，添加 FCGM 呈二次方（P  < 0.05）增加平均日增重（ADG）、平均日采食量、血清免疫球蛋白 G（IgG）和尿素氮水平，并呈线性（P < 0.05) 增加血清 IgM、丙酸、丁酸、总挥发性脂肪酸 (VFA) 和粪便中微生物群的香农指数。此外，与其他处理相比，FCGM0中链球菌属、FCGM10中的乳酸杆菌和FCGM30中毛螺菌的相对丰度增加（P  < 0.05）。总之，我们建议用 FCGM 代替 11.80% 的 SBM，以获得最佳的生长猪 ADG。此外，随着日粮中FCGM替代豆粕的比例增加，生长猪的免疫力、肠道菌群和总VFA组成得到改善。