A 64-year-old man has pleaded no contest to charges in Clark County Circuit Court after telling police he regularly had been using calves for sexual gratification. Harold G. Hart was placed on two years probation Thursday and ordered to have psychological counseling and an alcohol and drug abuse assessment after pleading to charges of sexual gratification with an animal and disorderly conduct.According to the criminal complaint, the family living on the farm Hart visited, installed a motion sensor because they had seen suspicious footprints and vehicle tracks. When the sensor sounded, Hart was caught leaving the barn. He later told police the farm was a routine stop, usually after bar closing or on trips to strip clubs near Marshfield or Neillsville. Hart told police he had gone to the farm at least 50 times in the last year, sometimes two to four times in a week.