Using a Herd Profile to Determine Age-Specific Prevalence of Bovine Leukemia Virus in Michigan Dairy Herds

<table>Mean prevalence, by lactation, of cows from 113 dairy herds that were positive for Bovine Leukemia Virus (BLV) by milk ELISA. For the null hypothesis that the true population correlation coefficient is zero, analysis of variance was significant (<svg height="11.375" id="M25" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 75.025002 11.375" width="75.025002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Veterinary Medicine International

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Figure 2

Figure 2: Using a Herd Profile to Determine Age-Specific Prevalence of Bovine Leukemia Virus in Michigan Dairy Herds 