Ergonomics intervention in poultry slaughter industry and evaluate the effectiveness by key indicators method (KIM)

Musculoskeletal disorders are the most common occupational diseases and injuries. The importance of control and reduction the discomfort to the extent that in many countries، Prevention of work-related musculoskeletal disorders among workers has been considered as one of the national priorities. the cross-sectional study was carried out as an intervention in a chicken slaughterhouse. In order to determine the prevalence of musculoskeletal disorders، Cornell questionnaire was used. By identifying the tasks that are very high in musculoskeletal disorders posture evaluate was conducted and then the proportional to risk level tasks، engineering and management measures was performed. Given that most tasks are the kind of manual handling and carrying، were used the KIM methods for evaluating posture before and after of intervention. The results of the Cornell questionnaire showed that the highest risk level Belongs to the neck، shoulders، back، arms and waist. Also evaluate by the KIM method the highest level of risk was estimated، the task of throwing the box and pick up the ice with the risk level 4 score، that after the intervention، decreased to the 2 score. Improvement obtained for all interventions on the average about 46. 37 percent. The McNemar test was also significant difference between the results obtained before and after intervention. ergonomic problems have undesirable effects on employee health and productivity. This study، engineering and management interventions could significantly reduce the amount of corrective measures to improve working conditions in different parts of the company.