Wooden breast and white striping: comparative occurrence in three poultry companies

ABSTRACT: To increase the amount of meat produced, researchers have promoted intensive genetic selection for growth rate and muscling improved nutrition management conditions. However, there has been an in number reports breast muscle myopathies observed poultry processing plants, including white striping (WS) wooden (WB). This study aimed to evaluate compare occurrence WS WB three plants perform anatomopathological characterization, macroscopic microscopic analyses. A total 408,334 carcasses were condemned or downgraded due presence WS, which represents 0.73% slaughtered animals during evaluated period. was more frequent than but each myopathy varied significantly according establishment. establishment includes only male flocks, average age 45 days, live weight 2775g (B). with male, female mixed ages ranging from 41 44 1731g-2830g (A). It is probably related specific condition company, genetics, age, Macroscopically, lesions are characterized by hypertrophy stiffness pectoralis major muscle. Under microscopy, showed similarities regarding detected histological abnormalities, a process myodegeneration, although connective tissue infiltrate severe breasts those myopathy. The results found this demonstrate that rates condemnation these high, vary among analyzed companies may cause economic losses productive sector region.