Comparative pathomorphological study of rickets types in broiler chickens

Document Type : Research Articles

Author

Trakia University

Abstract

The purpose of this study was to determine the incidence of rickets types in broiler chickens on the basis of gross and microscopic lesions in field clinical cases with regard to differential pathomorphological diagnosis.Clinical, serological, gross anatomy and histological investigations were carried out in broiler chickens with signs of rickets. The survey included 12 finisher broiler flocks (ten Ross 308 and two Cobb 500 flocks) from 4 different farms.Gross lesions in chickens from two of farms were indicative of hypophosphataemic rickets and the other two- of hypocalcaemic rickets types. Microscopic lesions correlated to
macroscopic ones. The results of investigations showed that lesions resulting from calcium deficiency were very different from those occurring after phosphorus deficiency or calcium excess. It was suggested that macroscopic lesions in the proximal tibiotarsus could be used to distinguish field cases of Ca-deficiency and P-deficiency rickets in broiler chickens. The lesions in other leg parts (femur and tarsometatarsus) were not consistent with regard to differential diagnosis of rickets types due to the insufficient lesions in these bones.

Keywords

Main Subjects

References

Angel, R. (2007) Metabolic disorders:limitations to growth of and mineral deposition into the broiler skeleton after the hatch and potential implications for leg problems. The Journal of Applied Poultry Research 16, 138-149.
Edwards, H.M. (1992) Nutritional factors and leg disorders, In: Whitehead CC,Editor, Bone biology and skeletal disorders in poultry, Carfax publishing company, Abingdon, 167-193.
Jande, S.S. and Dickson, I.R. (1980) Comparative histological study of the effects of high calcium diet and vitamin D supplements on epiphiseal plates of vitamin-D-deficient chicks.
Acta Anatomica 108, 463-468.
Lacey, D.L. and Huffer, W.E. (1982) Studies on the pathogenesis of avian rickets . I.Changes in epiphyseal and metaphyseal vessels in hypocalcemic and hypophosphatemic rickets.
American Journal of Pathology 109,288-301.
Lee, S.R., Britton, W.M. and Rowland, G.N.(1980) Magnesium toxicity: bone lesions, Poultry Science 59, 2403-2411.
Long, P.H., Lee, S.R., Rowland, G.N. and Britton, W.M. (1984a) Experimental rickets in broilers: Gross, microscopic and radiographic lesions. I. Phosphorus Deficiency and calcium excess. Avian Diseases 2, 460-474.
Long, P.H., Lee, S.R., Rowland, G.N. and Britton, W.M. (1984b), Experimental rickets in broilers: Gross, microscopic
and radiographic lesions. II. Calcium Deficiency. Avian Diseases 4, 921-932.
Long, P.H., Lee, S.R., Rowland, G.N. and Britton, W.M. (1984c) Experimental rickets in broilers: Gross, microscopic and radiographic lesions. III. Vitamin D Deficiency. Avian Diseases 4, 933-943.
Parkinson, G.B., Vaiano, S.A. and Azuolas,J.K. (1992) Rickets and tibial dyschondroplasia in Australian broiler chickens, In: Australian poultry science symposium, University of Aydney,
Sidney, New South Wales, 125-130.
Pattison, M. (1992) Impacts of bone problems on the poultry meat industry, In:Whitehead CC. Editor, Bone biology and skeletal disorders in poultry,Carfax publishing company, Abingdon,329-338.
Randall, C.J. (1991) A colour atlas of diseases & disorders of the domestic fowl & turkey,2nd edn., London (Wolfe Publishing, ltd), 114-116.
Riddell, C. (1992) Non infectious skeleton disorders of poultry – an overview, In:Whitehead, CC, Editor, Bone biology and skeletal disorders in poultry, Carfax publishing company, Abingdon,119-145.
Riddell, C. and Pass, D.A. (1987) The influence of dietary calcium and phosphorus on tibial dyschondroplasia in broiler chickens. Avian Diseases 31,771-775.
Thorp, B. (1992) Abnormalities in the growth of leg bones, In: Whitehead, CC Editor, Bone biology and skeletal disorders in poultry, Carfax publishing company, Abingdon, 147-166.
Thorp, B. (1994) Skeletal disorders in the fowl: a review. Avian Pathology 23,203-236.
Thorp, B.H., Whitehead, C.C. and Rennie, J.S.(1991) Avian tibial dyschondroplasia: a comparison of the incidence and severity
as assessed by gross examination and histopathology. Research in veterinary science 51, 48-54.
Vaiano, S.A., Azuolas, J.K., Parkinson,J.B.and Scott, P.C. (1994) Serum total calcium, phosphorus, 1.25-dihydroycholecalciferol, and endochondral ossification defects in commercial broiler chickens. Poultry Science 73, 1296-1305.
Send comment about this article
CAPTCHA Image

Files

History

  • Receive Date: 12 March 2012
  • Accept Date: 12 March 2012

Share

How to cite

Statistics