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<p>The selection of forage maize (<i>Zea mays</i> L.) cultivars significantly impacts ruminant nutrition and environmental sustainability. This study evaluated four maize types (TWC647, SC704, D5, and a SC704 + D5 mixture) for their effects on methane emissions, nutrient degradability, and rumen fermentation using in vitro techniques. SC704 exhibited the highest gas production (236.8&#xa0;ml/g DM), metabolizable energy (5.17&#xa0;MJ/kg DM), and net energy for lactation (2.64&#xa0;MJ/kg DM). TWC647 showed the highest degradability of dry matter, crude protein, and NDF. The SC704 + D5 mixture enhanced volatile fatty acid production but also resulted in the highest methane emissions (71.5&#xa0;l/kg FOM). These findings emphasize the importance of cultivar selection in optimizing fermentation efficiency and reducing environmental impact.</p>

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Forage maize type influences on methane emissions, nutrient degradation, and fermentation profiles in ruminants

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月3日

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  • Farhad Parnian-khajehdizaj,
  • Sajjad Moharramnejad

摘要

The selection of forage maize (Zea mays L.) cultivars significantly impacts ruminant nutrition and environmental sustainability. This study evaluated four maize types (TWC647, SC704, D5, and a SC704 + D5 mixture) for their effects on methane emissions, nutrient degradability, and rumen fermentation using in vitro techniques. SC704 exhibited the highest gas production (236.8 ml/g DM), metabolizable energy (5.17 MJ/kg DM), and net energy for lactation (2.64 MJ/kg DM). TWC647 showed the highest degradability of dry matter, crude protein, and NDF. The SC704 + D5 mixture enhanced volatile fatty acid production but also resulted in the highest methane emissions (71.5 l/kg FOM). These findings emphasize the importance of cultivar selection in optimizing fermentation efficiency and reducing environmental impact.