Show fighting bangs disease four years ago the federal government began testing for bangs disease and slaughtering infected animals the work was started as an emergency measure by the agricultural adjustment administration to reduce the cattle population of 0 the united states more than 1 million cattle with bangs disease have blen been killed since 1933 there have been more than 25 million tests made in nearly two million herds the infected animals came from a total ot oi more than 11 million cattle tested |