Biofermentation of aquatic plants: Potential novel feed ingredients for dairy cattle production

文献类型： 外文期刊

第一作者： Yang, Xugang

作者： Yang, Xugang;Wen, Dongxu;Huang, Xiaodan;Li, Bin;Yang, Xugang;Zhang, Ying;Huang, Xiaodan;Liu, Zhenjiang

作者机构：

关键词： Aquatic plant silage; Inoculants; Ruminant feeding; Microbiota; Sustainable development

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：8.0； 五年影响因子：8.7 ）

ISSN： 0048-9697

年卷期： 2024 年 952 卷

页码：

收录情况： SCI

摘要： The study assessed the impacts of aquatic plant silages on feeding efficiency and dairy cattle health as an alternative to conventional corn silage under high altitude conditions. Mid-lactation Holstein cows were assigned to treatment groups according to a randomized complete block design of parity, previous 105-d milk yield, and body weight. Cows (n n = 8 per group) were fed with aquatic plant silage inoculated with Bacillus subtilis (BS), Yeast (YS), or conventional corn silage without inoculants (control) in addition to [standard grain feed] for 75 consecutive days. BS and YS had higher protein contents than control silage (111.20 +/- 7.68, 112.10 +/- 6.83 vs 76.94 +/- 3.48 g/kg DM), while feeding efficiency was comparable between treatments (1.07, 0.99, and 0.90, respectively). In addition, the addition of aquatic plant silage in ruminant diets enhanced immunity and antioxidant capacity when compared with control group. Metagenomic analysis showed similar composition in rumen microbiota between YS and control groups, with higher enrichment for energy and nitrogen utilization pathways in YS-treated cows. This study highlights the use of aquatic plant silage as an alternative feed for dairy cattle with higher protein than corn silage. Our results suggest YS or BS could potentially boost immune and antioxidant functions, improving adaptation to high-altitudes and reducing demand for high input corn production on the Qinghai-Tibetan Plateau.

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