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The chicken on 2nd and 18th day of age were immunized subcutaneously with Eimeria tenella sporozoite antigen (25 ug per chicken) emulsified in freund's complete adjuvant (FCA) showed protection against challenge with homologous sporulated oocyst (104) at 32 day of age. The immunization efficacy was greater than those immunized with the antigen or FCA alone as compared with the unimmunized control. This was evident by a reduced number of oocyst p < /strong>roduction (1.27+0.16) x 10' per gram feces, lower mean lesion scores (+1.6) with no mortalities. Lymphocyte migration (LM) index rep < /strong>resented the cell mediated
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Assiut Vet. Med. J. Vol. 52 No. 110 July 2006
immune response (CMIR) indicated that its peak reached between day 10 and day 32 post-immunization in chickens immunized with Eimeria tenella sporozoite antigen. ELISA antibodies were detected on day 16 and reached peak on day 40 post-immunization.
DOI
10.21608/avmj.2006.177395
Keywords
Key words: Coccidiosis, Eimeria tenella, Immunology, chicken
Authors
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Parasitology Unit.,
Port-said Laboratory for Food Hygiene.
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Biotechnology Department, Animal Health Research Institute, Dokki.
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https://avmj.journals.ekb.eg/article_177395.html
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https://avmj.journals.ekb.eg/service?article_code=177395
Publication Title
Assiut Veterinary Medical Journal
Publication Link
https://avmj.journals.ekb.eg/
MainTitle
IMMUNE RESPONSES IN CHICKENS AGAINST EIMERIA TENELLA ANTIGEN