Abstract
On a broiler farm Salmonella was detected from 12 of 50 samples collected from the floor of the chicken house and the hand, clothes, and shoes. Since the all-in and all-out method could not be performed on this farm, the following countermeasures were carried out:(1) Sanitary measures, including disinfection, change of clothes and shoes for each house, and isoladon from the chicken dressing plant.(2) Introduction of Salmonella-free chickens, early detection of contamination, and preventive medication.
As a result, the mean carcase weight per head increased to 1.76 kg from 1.54 kg 6 months after the initiation of the countermeasures.
