Poultry Femoral Head Separation and Necrosis: A Review

Area of Science:

• Poultry science
• Veterinary orthopedics
• Animal genetics

Background:

• Femoral head separation (FHS) is a degenerative skeletal condition in fast-growing poultry.
• It involves the proximal femur's growth plate separating from articular cartilage, potentially leading to femoral head necrosis (FHN).
• Understanding FHS is crucial for genetic selection towards healthier poultry.

Purpose of the Study:

• To review the etiologic factors of FHS.
• To discuss anatomical features of the chicken femoral head relevant to FHS.
• To explore potential biomarkers and molecular mechanisms for diagnosing and understanding FHN.

Main Methods:

• Literature review of existing studies on FHS and FHN in poultry.
• Analysis of anatomical and pathological aspects of the chicken femoral head.
• Discussion of potential diagnostic biomarkers and molecular pathways.

Main Results:

• FHS etiology is poorly understood, hindering noninvasive diagnosis and genetic selection.
• Focal cell death, atrophic changes, and fibrotic thickening of the articular surface are implicated in FHS.
• Lack of suitable experimental models and biomarkers limits FHN pathophysiology research.

Conclusions:

• Further research into FHS etiology, biomarkers, and molecular mechanisms is needed.
• Developing diagnostic tools and models will aid in genetic selection for healthy femoral heads.
• Addressing FHS is vital for poultry welfare and productivity.