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A Mouse Model of Ankle-Subtalar Complex Joint Instability
Published on: October 28, 2022
Observations on leg deformity in broilers with particular reference to the intertarsal joint.
1Fisheries and Food Veterinary Laboratory, Ministry of Agriculture, Lasswade, Midlothian, Scotland.
Avian Pathology : Journal of the W.V.P.A
|October 1, 1981
Summary
This study found that valgus deformity and growth plate lesions are common in broiler chickens. Dyschondroplasia may increase the risk of these leg deformities.
Area of Science:
- Avian pathology
- Poultry science
- Veterinary orthopedics
Background:
- Leg deformities are a significant welfare and economic concern in broiler chickens.
- Valgus deformity, dyschondroplasia, and growth plate abnormalities are frequently observed in broiler flocks.
Purpose of the Study:
- To investigate the incidence and characteristics of leg deformities in male broiler chickens.
- To explore the relationship between dyschondroplasia and valgus deformity.
Main Methods:
- Examination of leg lesions in two flocks of male broilers.
- Age-specific incidence of deformities was recorded.
- Histopathological assessment of growth plate lesions in affected and unaffected birds.
Main Results:
- Progressive valgus deformity, dyschondroplasia, and thickened growth plates were the most common findings.
- Peak incidence of leg deformities occurred between 3 and 7 weeks of age.
- Broilers with leg deformities showed a higher prevalence of growth plate lesions (62%) compared to unaffected birds (40%).
Conclusions:
- Dyschondroplasia, particularly in the distal tibiotarsus, is associated with valgus deformity.
- Dyschondroplasia may predispose broilers to leg distortion but is not always the initial cause.
- Clear terminology for these avian leg lesions is essential for accurate diagnosis and research.
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