Supplemental File S2 - Perry et al., 2023

From April 13, 2022 to August 26, 2022, 100 Ontario dairy farms were visited where blood from 1,990 dairy heifers (median = 20 samples per farm, range = 17 to 20; Figure 1) and 100 bulk tank milk samples were collected. In addition, a questionnaire was completed at each of the dairy farms, where each question was read verbally to the farmers by a single graduate student with responses recorded in a Qualtrics form. An anonymized distribution of responses to the questionnaire is available here as a PDF and raw CSV file.2022年4月13日至2022年8月26日期间，研究团队走访了100家安大略省奶牛养殖场，采集了1990头奶牛青年母牛的血液样本（场均采样中位数为20份，采样范围17至20份；图1）以及100份散装罐奶样本。此外，每家奶牛养殖场均需填写调查问卷：由同一名研究生向养殖户逐一口头宣读所有问题，并将应答结果录入Qualtrics在线问卷表单。该调查问卷的匿名化应答数据集可通过此处提供的PDF文件及原始CSV文件获取。