Prevalence study of Eimeria species in broilers and layer chickens in Tehran and Alborz provinces

Document Type : Full Research Paper

Authors

1 Department of Pathobiology, Razi Vaccine & Serum Research Institute, AREEO.

2 Department of parasitology, Razi vaccine and serum research Institute, AREEO.

3 Agriculture and natural resorce center of Tehran province, AREEO.

4 Department of Aerobic Vaccine Research and Production, Razi Vaccine and Serum Research Institute,AREEO.

Abstract

Coccidiosis is an enteric disease that produces by Eimeria protozoa (phylum: Apicomplexa). It is the most important disease in poultry in the world. Survey on distribution of Eimeria species requires continuous study in poultry flocks. In this study, prevalence of Eimeria species in litter of broilers and layer farms in Tehran and Alborz provinces were carried out. Litter samples, including: 354 broiler and 282 laying flocks with a number of suspected chickens with pre-clinical symptoms were collected to examine gross and lesions in carcass. Oocytes were separated from feacal samples and analyzed morphologically. The results showed three species of Eimeria including: tenella, maxima and acervulina in broiler with amount of 25.55%, 31.39% and 14.77%, respectively, and in poulet in addition to these three species mentioned above, the Eimeria necatrix with amount of 21.51% ، 20.64% ، 8.33% and 1.03% respectively. These results showed, in addition to the use of anti- coccidiosis drugs, the use of vaccine, based on the dominant species seems essential in this area.

Keywords

References

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Veterinary Research & Biological Products
Volume 28, Issue 4 - Serial Number 4
December 2015
Pages 31-36

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History

  • Receive Date: 21 April 2015
  • Revise Date: 21 November 2015
  • Accept Date: 23 October 2015

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