Effect of Lactation Stage and Behavioral Activity on Enteric Methane Emissions in Dairy Cows.

基本信息

• 作者：Cristina Pavanello; Marcello Franchini; Alberto Romanzin; Stefano Bovolenta; Mirco Corazzin
• DOI：10.3168/jds.2025-28158
• 原文链接：https://doi.org/10.3168/jds.2025-28158
• 数据来源：pubmed:pubmed-jds
• 抓取时间：2026-05-30T18:53:27+00:00
• Markdown 文件：/root/worksplace/paper-tracker/exports/obsidian/2026-05-18-effect-of-lactation-stage-and-behavioral-activity-on-enteric-methane-emissions-in-dairy-cows.md

摘要

This study investigated how the lactation stage and the main behavioral activities of dairy cows influence enteric methane emissions. The research trial was conducted on 39 Italian Simmental dairy cows reared in a commercial dairy farm. Each animal was monitored during early, mid, and late lactation. Methane emissions were measured using LaserMethaneSmart (LMS® - Tokyo Gas Engineering Solutions Ltd.) device. Simultaneously, eating, rumination, and resting times were continuously recorded using activity monitoring collars. Furthermore, milk yield and composition and feed samples were collected throughout the experiment. Methane emissions were significantly affected by both behavioral activity and its interaction with the lactation stage. The highest methane intensity values were observed during rumination in late lactation, while resting consistently showed the lowest emissions. Emissions estimated by considering only eating activity tended to overestimate total daily methane output compared with estimates weighted across all behaviors. These findings underscore that behavioral patterns, particularly rumination and resting, contribute substantially to daily methane emissions and should be included in emission models to improve the accuracy of environmental assessments and mitigation strategies in dairy production systems.

中文整理

基础摘要（未启用或未成功调用大模型）：This study investigated how the lactation stage and the main behavioral activities of dairy cows influence enteric methane emissions. The research trial was conducted on 39 Italian Simmental dairy cows reared in a commercial dairy farm. Each animal was monitored during early, mid, and late lactation. Methane emissions were measured using LaserMethaneSmart (LMS® - Tokyo Gas Engineering Solutions Ltd.) device. Simultaneously, eating, rumination, and resting times were continuously recorded using activity monitoring collars. Furthermore, milk yield and composition and feed samples were collected throughout the experiment. Methane emissions were significantly affected by both behavioral activity

关键词标签

相关性说明

命中 奶牛/牛只 关键词：dairy cow, cow；命中 行为识别 关键词：behavior, activity, rumination；命中 农业智能装备 关键词：monitoring