Fermentation Quality and Bacterial Diversity of <i>Broussonetia papyrifera</i> Leaves Ensiled with <i>Lactobacillus plantarum</i> and Stored at Different Temperatures
2022
Mingyang Zheng | Wei Zhou | Xuan Zou | Shuo Wu | Xiaoyang Chen | Qing Zhang
<i>Broussonetia papyrifera</i> has increasingly been used as a high-quality feedstuff for ruminants due to its advantageous characteristics. The storage temperature can influence the fermentation quality of silage; however, the effect of temperature on <i>B. papyrifera</i> leaves (BPL) silage has not been reported. In the present study, the fermentation quality and bacterial community of BPL, stored at 15 °C and 30 °C, were investigated during ensiling (day 3, 7, 14, 30) with or without <i>Lactobacillus plantarum</i> strain (LP) added. The pH and the coliform bacteria counts were significantly lower in silage stored at 30 than 15 °C (<i>p</i> < 0.01), while the lactic acid content increased significantly (<i>p</i> < 0.05). Adding LP decreased the dry matter loss, pH, coliform bacteria count, and ammonia-N and butyric acid contents at 30 °C. The relative abundance of <i>Lactobacillus</i> increased, while the bacterial diversity decreased in the silage stored at 30 °C when LP was added. During silage, the high abundance of <i>Lactobacillus</i> decreased gas and carbon dioxide (CO<sub>2</sub>) production, and the lowest gas and CO<sub>2</sub> production were detected in silage stored at 30 °C when LP was added. In conclusion, adding LP and storing it at 30 °C could effectively improve the quality of BPL silage.
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