Reported perception of dairy cow diseases by herd size and calving pattern.

<p>Perception was based on treatments, mortality, culling and herd performance (% of respondents to a transition period survey in Ireland). ^aHerds were categorized by herd size (large: >150 cows, above average: 100–150 cows, average: 60–100 cows, or small: <60 cows) using the Irish national dairy herd average as reference (93 cows; [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0314987#pone.0314987.ref009" target="_blank">9</a>]), and by calving pattern (spring-calving: cows calving in spring, or split-calving: cows calving in spring and autumn). ^bPerception definitions: Significant problem (regularly treating severe cases with some cows lost/culled), routine problem (regularly treating cows to control issues), occasional cases (but no major effect on herd performance).</p> <p>(DOCX)</p>