Parameter Estimate* Standard Error t Value Pr > t
Intercept 5677 424.0 13.4 < 0.001
Days in milk 10 0.9 11.9 < 0.001
Lactation number -554 82.6 -6.7 < 0.001
Daily Milk† 82 3.5 23.9 < 0.001
BVD%‡ -12 4.4 -2.8  0.005
* Estimated effects on 305 day milk production shown in kg
Effect of each 0.45 kg increase in daily milk production at the time of DHIA test
effect of each one percent increase in anti-p80 BVD Ab binding % (increased binding indicates less anti-p80 BVD Ab in cow's milk)
R2 = 0.72, P < 0.0001

Table 2: General linear model for cow characteristics associated with 305 day projected milk production (kg) corrected for age, season and fat.