Time (as h after seed intake) to 50% mortality (half-life; tV50, Eq 5) for four weed seeds passed through the digestive tract of four Holstein cattle groups (horizontal bars denote one standard error).

Time (as h after seed intake) to 50% mortality (half-life; tV50, Eq 5) for four weed seeds passed through the digestive tract of four Holstein cattle groups (horizontal bars denote one standard error).