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Impact of Packing Density on the Bacterial Community, Fermentation, and In Vitro Digestibility of Whole-Crop Barley Silage

Author

Listed:
  • Lin Sun

    (College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
    Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Na Na

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Xiaomei Li

    (College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China)

  • Ziqin Li

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Chao Wang

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Xiaoguang Wu

    (Inner Mongolia Autonomous Region Land Surveying and Planning Institute, Hohhot 010055, China)

  • Yanzi Xiao

    (College of Agriculture and Forestry, Hulunbuir University, Hulunbuir 021000, China)

  • Guomei Yin

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Sibo Liu

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Zhiping Liu

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Yanlin Xue

    (Inner Mongolia Engineering Research Center of Development and Utilization of Microbial Resources in Silage, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China)

  • Fuyu Yang

    (College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China)

Abstract

Packing density has a significant influence on the outcome of ensiling forage. In this study, we aim to investigate the effect of packing density on the ensiling properties, microbiome, and in vitro digestibility of barley silages. Barley was ensiled in polyethylene drum silos (30 L) with respective densities of 600, 650, 700, and 750 kg/m 3 fresh matter (FM), and stored for 60 days. The bacterial communities, fermentation quality, and in vitro digestibility were analyzed. Fresh barley had a low count of lactic acid bacteria (LAB, 10 4 cfu/g of FM), and Lactobacillus was nearly undetectable (<1%). Increasing the packing density decreased the pH and the content of ammonia nitrogen (NH 3 -N), ethanol, neutral detergent fiber (NDF), and acid detergent fiber (ADF) of barley silage ( p < 0.05), and increased in vitro digestibility of dry matter, NDF, ADF, and DM recovery ( p < 0.05). A higher packing density decreased the abundances of Enterobacter (from 47.4% to 35.4%) and Clostridium (from 13.5% to 3.8%), and increased the abundance of Lactobacillus (from 1.8% to 17.0%). Thus, packing density positively correlated with Lactobacillus ( p < 0.05) but negatively correlated with Enterobacter ( p < 0.05). The pH and the content of ethanol were positively correlated with Enterobacter ( p < 0.05) but negatively correlated with Lactobacillus ( p < 0.05). In conclusion, the density of 750 kg/m 3 FM resulted in the highest silage quality of the densities tested.

Suggested Citation

  • Lin Sun & Na Na & Xiaomei Li & Ziqin Li & Chao Wang & Xiaoguang Wu & Yanzi Xiao & Guomei Yin & Sibo Liu & Zhiping Liu & Yanlin Xue & Fuyu Yang, 2021. "Impact of Packing Density on the Bacterial Community, Fermentation, and In Vitro Digestibility of Whole-Crop Barley Silage," Agriculture, MDPI, vol. 11(7), pages 1-14, July.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:7:p:672-:d:595187
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    References listed on IDEAS

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    1. Lin Sun & Yun Jiang & Qinyin Ling & Na Na & Haiwen Xu & Diwakar Vyas & Adegbola Tolulope Adesogan & Yanlin Xue, 2021. "Effects of Adding Pre-Fermented Fluid Prepared from Red Clover or Lucerne on Fermentation Quality and In Vitro Digestibility of Red Clover and Lucerne Silages," Agriculture, MDPI, vol. 11(5), pages 1-11, May.
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