Systematic review for optimizing sample size in dairy cow methane emission studies: a comprehensive methodological approach

Collection of research data focusing on methane (CH4) emissions from dairy cows across various breeds and conditions. The dataset encompasses a range of studies published from 2012 to 2023, each documented with specific parameters including the study title, authors, country of research, cow breed, lactation status, methods used for CH4 measurement, experimental designs, CH4 yield and its variability, dry matter intake, and diet composition.本数据集为聚焦不同品种与养殖条件下奶牛甲烷（CH4）排放的科研数据集合。该数据集涵盖2012至2023年发表的一系列相关研究，每项研究均记录了以下具体参数：研究标题、作者、研究所在国家、奶牛品种、泌乳状态、甲烷排放测量方法、实验设计方案、甲烷产率及其变异程度、干物质采食量以及日粮组成。