The transportation stage mainly considers the transportation of feed, and the transportation mode is mainly road transportation. The damage caused to the surrounding environment of the road during the transportation process, the feed loss generated during the transportation process and other service costs (such as: high-speed fees, refueling fees, repair costs, etc.) are not considered, and only the exhaust emission during the vehicle transportation process is considered. When utilizing this data set for Life Cycle Assessment (LCA) purposes, the user should incorporate the exhaust emission data precisely as it pertains to the vehicle's operation during feed transportation. It is essential not to include other factors such as environmental damage to areas near the road, feed losses, or other service fees in the assessment. The data is relevant for modeling emissions linked to the transportation of poultry feed, but not for the comprehensive assessment of the overall environmental impact of the transportation stage.