Figure 9

Lifetime exposure for MAP infected and MAP free cows. Days exposed and not exposed to MAP shedders for both MAP infected and MAP infection free cows. Where ○ indicates cows that are tissue and fecal culture negative at slaughter, ■ indicates cows that were culture positive in either tissue or fecal at slaughter. Regression analysis showed that per 100 days exposed, cows had an odds ratio of 1.12 (1.06-1.18) to be MAP infected at slaughter compared to MAP unexposed cows.