Show test for abortion the way to determine whether a herd of cows Is infected with abort abortion 1 oil bang disease la Is to have them test tested ed by a competent veterinarian where a cow retains the afterbirth after calving she should be regarded a as a suspicious the greatest spreader of this disease la Is the aborting cow at the time of and tor for a short period following the abortion states dr nobert graham university of illinois veterinarian infected cows at the time of normal calving are also dangerous as spreaders of the infection As with tuberculosis healthy herds are more profitable than infected herds and owners nho ho have reason to believe that such infection may exist la in the herd should have them te tested prairie farmer |