A syndrome of pathological fractures in the proximal tibiotarsi of white leghorn x new hampshire pullets

Reece, Richard L.; Dickson, D. Bruce

doi:10.1080/03079458608436291

Cited by 1 publication

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Transverse bone fractures have been reported to occur as a consequence of lymphomas within the medulla of the proximal tibiotarsus in 7-to 16-week-old turkeys from one flock, resulting in lameness in 2% of the birds . Metaphyseal fractures have also been identified in the proximal tibiotarsus of 5-to 8-week-old White Leghorn X New Hampshire pullets which, because of some similarities with Moller-Barlow dis-ease in mammals, were attributed to a possible vitamin C deficiency (Reece & Dickson, 1986).…”

Section: Miscellaneousmentioning

confidence: 91%

Skeletal disorders in the fowl: A review

Thorp

1994

Avian Pathology

128

View full text Add to dashboard Cite

SUMMARYSelection pressure for production traits in modern lines of poultry has placed increasing demands on skeletal integrity. Disruption of the normal process of skeletal growth and homeostasis results in bone diseases that are manifest throughout the modern poultry industry. Bone conditions in poultry can be grouped under three headings based on the age and type of fowls affected, and are indicative of the genetic and production stresses applied to the skeleton. In broilers during growth it is primarily pathologies of the growth plate that lead to most skeletal disorders. In broiler and turkey breeding stock the progressive degeneration of the articular cartilage results in osteoarthrosis, lameness and a consequential loss of reproductive performance. In laying hens bone fragility is most frequently the result of osteoporosis. Before attempting to determine the aetiology of a skeletal disorder an accurate diagnosis must be made. Only then can short-and long-term strategies be developed for the prevention and control of skeletal disorders. Diagnosis requires gross and histological examination, and also dietary, environmental and management analyses. The pathology often reflects lesions initiated when the bird was considerably younger and analyses must extend to assessing the factors prevalent during the initiation of lesions. Current studies are furthering the understanding of the aetiopathogenesis of avian skeletal disorders. For example, structural bone loss at the onset of follicular activity before egg-laying is pivotal to the development of osteoporosis in layers and deficiencies in growth factor expression are integral to the development of tibial dyschondroplasia.

show abstract

Section: Miscellaneousmentioning

confidence: 91%