To effectively use local available grass resources to cover the winter feed shortage on the Qinghai‐Tibetan Plateau, direct‐cut and wilted reed canary grass (RCG) silages were prepared by using a rolled‐bale system, and their ensiling characteristics and in vitro digestibility were studied. Silages were treated without (control) or with inoculants including LP (Lactobacillus plantarum), LPLB (L. plantarum, L. buchneri), and LPLBc (L. plantarum, L. buchneri, and cellulase), and were stored at ambient temperature (5.7–14.6°C) for 90 days. Compared with control, the inoculated silages increased (p < .05) lactic acid and acetic acid contents, and reduced (p < .05) final pH value and ammonia‐N ratio of total N. The highest WSC content (41.2 g/kg DM) occurred for LPLB‐inoculated silage, whereas LPLBc‐treated silage displayed the lowest contents of NDF (522.9 g/kg DM) and ADF (275.5 g/kg DM). In addition, LPLBc‐inoculated silage had the highest in vitro gas production (51.0 ml/g DM), in vitro DM digestibility (619.3 g/kg DM), and metabolic energy (9.6 kJ/kg DM). These results confirmed that treatments with inoculants at ensiling could improve silage fermentation and in vitro digestibility of RCG, and this could be a potential winter feed for animals on the Qinghai‐Tibetan Plateau.

中文翻译：

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接种剂对青藏高原芦苇草(Phalaris arundinacea L.)青贮饲料发酵特性及体外消化率的影响。

为有效利用当地可利用的牧草资源解决青藏高原冬季饲料短缺问题，采用滚压草捆系统制备了直切枯萎芦苇金丝雀草 (RCG) 青贮饲料，并对其青贮特性和体外消化率进行了研究被研究。青贮饲料在没有（对照）或接种剂的情况下进行处理，包括 LP（植物乳杆菌）、LPLB（植物乳杆菌、布氏乳杆菌）和 LPLBc（植物乳杆菌、布氏乳杆菌和纤维素酶），并在环境温度下储存（ 5.7–14.6°C) 90 天。与对照相比，接种的青贮饲料增加了 ( p  < .05) 乳酸和乙酸含量，减少了 ( p < .05) 最终 pH 值和总氮的氨氮比。LPLB 接种青贮饲料的 WSC 含量最高 (41.2 g/kg DM)，而 LPLBc 处理的青贮饲料中 NDF 含量最低 (522.9 g/kg) DM) 和 ADF (275.5 g/kg DM)。此外，LPLBc 接种的青贮饲料具有最高的体外产气量 (51.0 ml/g DM)、体外 DM 消化率 (619.3 g/kg DM) 和代谢能 (9.6 kJ/kg DM)。这些结果证实，在青贮期间用接种剂处理可以提高青贮发酵和 RCG 的体外消化率，这可能是青藏高原动物的潜在冬季饲料。