A feeding experiment was conducted to determine the effects of inoculating alfalfa silage with a ferulic acid esterase-producing inoculum on feed digestibility, rumen fermentation, antioxidant, and immunity status of lactating dairy goats. Twenty dairy goats were distributed into 2 experimental groups consisting of control diet (Lp MTD/1, including Lactobacillus plantarum MTD/1 inoculated silage) against diet containing silage treated with ferulic acid esterase-producing L. plantarum A1 (Lp A1). Alfalfa silage inoculated with a ferulic acid esterase-producing Lp A1 had better fermentation quality than the Lp MTD/1 inoculation. The application of Lp A1 improved silage antioxidant capacity as indicated by greater total antioxidant capacity (T-AOC), superoxide dismutase (SOD) and glutathion peroxidase (GSH-Px) activities in Lp A1 treated silage versus Lp MTD/1 treatment. Compared with Lp MTD/1 treated group, inoculation of silage with Lp A1 increased apparent total tract digestibility of dietary dry matter, organic matter and crude protein, and ruminal concentrations of total volatile fatty acids, acetate, propionate and isobutyrate as well. The results of current study also demonstrated improved antioxidant capacity and immune performance of dairy goats with Lp A1 inoculation. Feeding Lp A1-treated silage increased dairy goats' serum antioxidase activity, such as T-AOC, SOD, GSH-Px and catalase, and the serum concentration of immunoglobulin A, while decreased tumor necrosis factor α, interleukin (IL)-2 and IL-6. In addition, compared with Lp MTD/1, diet containing alfalfa silage inoculated with Lp A1 endowed dairy goats' milk with greater fat and protein contents, improved dairy goat milk quality without affecting feed efficiency.

进行了饲喂试验，以确定在苜蓿青贮饲料中接种产生阿魏酸酯酶的菌种对泌乳奶山羊饲料消化率、瘤胃发酵、抗氧化和免疫状态的影响。将 20 只奶山羊分成 2 个实验组，由对照饮食（Lp MTD/1，包括接种植物乳杆菌MTD/1 的青贮饲料）和含有用产生阿魏酸酯酶的植物乳杆菌处理的青贮饲料组成的实验组A1 (Lp A1)。接种产生阿魏酸酯酶的Lp A1的紫花苜蓿青贮比接种Lp MTD/1的发酵质量更好。与 Lp MTD/1 处理相比，Lp A1 处理的青贮饲料中总抗氧化能力 (T-AOC)、超氧化物歧化酶 (SOD) 和谷胱甘肽过氧化物酶 (GSH-Px) 活性更高，表明 Lp A1 的应用提高了青贮饲料的抗氧化能力。与 Lp MTD/1 处理组相比，接种 Lp A1 的青贮饲料增加了日粮干物质、有机物质和粗蛋白的表观总消化道消化率，以及总挥发性脂肪酸、乙酸盐、丙酸盐和异丁酸盐的瘤胃浓度。目前的研究结果还表明，接种 Lp A1 的奶山羊可以提高抗氧化能力和免疫性能。饲喂经 Lp A1 处理的青贮饲料增加了奶山羊的血清抗氧化酶活性，如 T-AOC、SOD、GSH-Px 和过氧化氢酶，以及免疫球蛋白 A 的血清浓度，同时降低了肿瘤坏死因子 α、白细胞介素 (IL)-2 和IL-6。此外，与Lp MTD/1相比，接种Lp A1的苜蓿青贮饲料赋予奶山羊更高的脂肪和蛋白质含量，在不影响饲料效率的情况下改善了奶山羊奶质量。