| Titles |
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English :
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Effect of Chlortetracycline as a Growth Promoter and Levamisole on the Immune Response of Chickens Against Newcastle Disease Vaccine.
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Arabic :
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تأثير الكلورتتراسيكلين والليفاميزول على الجهاز المناعي للدجاج المحصن بلقاح النيوكاسل
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| Abstract |
310 one day old Ross chicks were used to study the effect of Chlortetracycline as a growth promoter (200 gm/ton ration) and/or Levamisole (20 mg/kg b.w.) on the immune response of chickens either non-vaccinated or vaccinated against Newcastle disease virus. Chlortetracycline was found to increase the body weight and food consumption, and to improve the feed conversion ratio and feed effeciency, but it decreased the cellular immune response represented by decreased lymphocyte stimulation index against phytoheamagglutinin, phagocytosis percentage and phagocytic index. Also, it decreased the humoral immune response represented by decreased antibody titre (ELISA titre) and decreased protection rate of the Newcastle vaccine against challenge with virulent ND virus. While, levamisole increased all the parameters of the cellular and humoral immune response in the chickens treated with both chlortetracycline and levamisole, thus assuring the levamisole immunorestorative properties.
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| Publication year |
2005
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| Pages |
311-328
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| Availability location |
ش السكة البيضاء - العباسية -القاهرة
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| Availability number |
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| Organization Name |
Veterinary Serum and Vaccine Research Institute (VSVRI)
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| City |
القاهرة
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| serial title |
المؤتمر العلمي الثامن بكلية طب بيطري القاهرة - التكنولوجيا الحيوية وتنمية الثروة الحيوانية
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| Author(s) from ARC |
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| External authors (outside ARC) |
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| Agris Categories |
Animal diseases
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AGROVOC
TERMS |
Anthelmintics.
Immunosuppression.
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| Publication Type |
Conference/Workshop
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