White striping (abbreviated WS) is a condition in poultry where white fat deposits replace muscle in stripes along muscle fibers. It is considered a type of myopathy, primarily of the Pectoralis major muscle.[1][2] There does not appear to be direct harm to birds specifically from white striping. However, some scientists and animal welfare groups have called its presence indicative of the industry's use of fast-growing birds, who have higher rates of health issues and welfare concerns such as hock burns.[3][4] Using fast-growing birds is linked to overall higher rates of white striping.[5]