BVD% binding means by ranges of days in milk DIM Range BVD% n Standard deviation 1-9 15.7 a 8 13.4 10-30 33.9 b 34 21.0 31-60 46.4 d 53 22.9 61-150 60.0 c 149 21.2 151-300 47.4 d 185 21.2 301-360 40.5 d 37 23.5 > 360 46.1 d 25 24.8 Means with the same superscript letter are not significantly different from each other, α = 0.05, ANOVA, Tukey's.

Table 1: Mean milk anti-p80 BVD Ab binding % from fresh milk samples with no Bronopol preservative pill for 491 cows in different stages of lactation (ranges of days in milk).