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- Title
The comparative analysis of infection pattern and oocyst output in Eimeria tenella, E. maxima and E. acervulina in young broiler chicken.
- Authors
Myung-Jo You
- Abstract
Aim: To assess the pattern of infection pattern by artificially infected Eimeria strains of Korean isolates and assessed the degree of sporulating oocysts at different temperature. Materials and Methods: Birds were orally inoculated with oocysts of Eimeria tenella, Eimeria maxima and Eimeri acervulina. Oocyst count, oocyst isolation and sporulation were evaluated from the fourth to the tenth day post infection. Histopathological studies also made inthe caecum and intestinal to comparative lesions. Results: Mean oocyst counts of these species increased more quickly on the day of 5th to 6th of post-infection. E. acervulina reached its highest infection level on the 6th day while both E. tenella and E. maxima had peak on the 7th day. The prepatent period of oocyst output in the E. acervulina started 120 h and ended on the 10th day after inoculation, whereas the E. maxima started oocyst output at 144 h and E. tenella oocyst output at 168 h respectively. The best temperature for optimum sporulation was foundto beat 25°C atsporulation rateof88.91%, whileat 20°C sporulated 88.03%, and at 30°C sporulated 82.44%. Conclusion: Current study represent the pattern of infection, pathogenesis and optimum sporulation temperature and our results suggested that 25 °C isoptimum for sporulated oocyst of Korean isolates of E. tenella, E. maxima andE. acervulina.
- Subjects
OOCYSTS; BROILER chicken diseases; EIMERIA tenella; EIMERIA acervulina; CECUM; COMPARATIVE studies
- Publication
Veterinary World, 2014, Vol 7, Issue 7, p542
- ISSN
0972-8988
- Publication type
Article
- DOI
10.14202/vetworld.2014.542-547