Parnian-Khajehdizaj Farhad, Moharramnejad Sajjad
Animal Science Research Department, East Azarbaijan Agricultural and Natural Resources Research and Education Center, AREEO, Tabriz, Iran.
Crop and Horticultural Science Research Department, Ardabil Agricultural and Natural Resources Research and Education Center, AREEO, Moghan, Iran.
Sci Rep. 2025 Jun 3;15(1):19433. doi: 10.1038/s41598-025-03936-2.
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.
饲用玉米（Zea mays L.）品种的选择对反刍动物营养和环境可持续性有显著影响。本研究采用体外技术评估了四种玉米类型（TWC647、SC704、D5以及SC704 + D5混合物）对甲烷排放、养分降解率和瘤胃发酵的影响。SC704的产气量最高（236.8毫升/克干物质）、代谢能最高（5.17兆焦/千克干物质）以及泌乳净能最高（2.64兆焦/千克干物质）。TWC647的干物质、粗蛋白和中性洗涤纤维降解率最高。SC704 + D5混合物提高了挥发性脂肪酸的产量，但也导致了最高的甲烷排放量（71.5升/千克发酵有机物）。这些发现强调了品种选择在优化发酵效率和减少环境影响方面的重要性。
