Pressman et al 2025 - JDS - Comparing gas spot sampling schemes in cattle - Supplemental Materials

Supplemental materials for "Comparison of strategies for spot sampling enteric methane and hydrogen emissions to evaluate methane-reducing feed additives in dairy and beef cattle" (Pressman et al., 2025, Journal of Dairy Science; DOI: 10.3168/jds.2025-26470). These materials contain one supplemental data table and five supplemental figures. Contents: Table S1: Raw average emissions and total DMI data and number of animals included in analysis by experimental week in the Beef Experiment. Figure S1: Pairwise contrasts by sampling strategy on estimated marginal means of CH4 yield within each treatment group-sampling strategy combination in the Dairy Experiment. Figure S2. Pairwise contrasts by sampling strategy on estimated marginal means of total DMI within each treatment group-sampling strategy combination in the Dairy Experiment. Figure S3. Pairwise contrasts by sampling strategy on estimated marginal means of CO2 production within each treatment group-sampling strategy combination in the Dairy Experiment. Figure S4. Pairwise contrasts by sampling strategy on estimated marginal means of hours between last feeding and GF visits within each treatment group-sampling strategy combination in the Dairy Experiment. Figure S5: Pairwise contrasts by treatment group on estimated marginal mean of voluntary daily visits under all voluntary sampling strategies in the Dairy Experiment.《针对奶牛与肉牛甲烷减排饲料添加剂评价的即时采样法肠内甲烷与氢气排放策略对比》（Pressman等，2025年，《乳业科学杂志》；DOI：10.3168/jds.2025-26470）的补充材料。本补充材料包含1张补充数据表与5张补充图。 内容： 表S1：肉牛试验中按试验周分组的原始平均排放数据、总干物质采食量（Dry Matter Intake, DMI）以及纳入分析的动物数量。 图S1：奶牛试验中各处理组-采样策略组合下甲烷（Methane, CH4）产量的估计边际均值按采样策略进行的两两对比。 图S2：奶牛试验中各处理组-采样策略组合下总干物质采食量的估计边际均值按采样策略进行的两两对比。 图S3：奶牛试验中各处理组-采样策略组合下二氧化碳（Carbon Dioxide, CO2）产生量的估计边际均值按采样策略进行的两两对比。 图S4：奶牛试验中各处理组-采样策略组合下末次饲喂至胃瘘管（Gastric Fistula, GF）访问间隔时长的估计边际均值按采样策略进行的两两对比。 图S5：奶牛试验中所有自愿采样策略下每日自愿访问次数的估计边际均值按处理组进行的两两对比。