Degenerative myopathy of the deep pectoral muscle in the turkey

J Hered. 1975 Nov-Dec;66(6):362-6. doi: 10.1093/oxfordjournals.jhered.a108648.


A degenerative myopathy affecting only the supracoracoideus in the domestic turkey, with a greater incidence in white turkeys than in Broad Breasted Bronze, was first observed in 1967. The defect is variable in expressivity and penetrance and is apparently part of a polygenic system involving modifiers. The defect is found principally in turkeys of breeding age, and only to a very limited extent in birds under 24 weeks of age. The abnormality has a higher incidence in females. Muscle damage takes the form of a localized hemorrhage, edema, degeneration and necrosis of muscle leading to encapsulation. Ultimately there is liquefaction and absorption of necrotic tissue.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Crosses, Genetic
  • Female
  • Male
  • Muscular Dystrophy, Animal / genetics*
  • Muscular Dystrophy, Animal / pathology
  • Mutation
  • Pectoralis Muscles* / pathology