| prevalence of tritrichomonas foetus in tennessee bulls. | the prevalence of bovine trichomonosis (bt) in tn bulls was estimated through both active screening of bulls and review of previous laboratory records. during the active bull screening, preputial smegma specimens were collected from 458 tn beef bulls at 2 cattle slaughterhouses and 2 stockyards, which serve most beef bulls in tn, between march 2014 and june 2015. each specimen was cultured for tritrichomonas foetus (t. foetus) as well as evaluated microscopically every other day for seven days f ... | 2017 | 28807288 |