Time (as h after seed intake) to 50% mortality (half-life; <i>t</i><sub><i>V</i>50</sub>, Eq 5) for four weed seeds passed through the digestive tract of four Holstein cattle groups (horizontal bars denote one standard error).

<p>Time (as h after seed intake) to 50% mortality (half-life; <i>t</i><sub><i>V</i>50</sub>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0154057#pone.0154057.e005" target="_blank">Eq 5</a>) for four weed seeds passed through the digestive tract of four Holstein cattle groups (horizontal bars denote one standard error).</p>