Immunomodulatory Effects Of Coccidiostats In Broiler Chicks
By: Fraaz Mahmood
| Muhammed Akram Muneer.
Contributor(s): Manzoor | Muhammed Naeem | Faculty of Veterinary Sciences.
Material type: 
BookPublisher: 1991Subject(s): Department of MicrobiologyDDC classification: 0256,T Dissertation note: This study indicated that Amprolium and Clopidol (Coyden 25) when used at recommended dosage levels (6.25 gm of pure drug/50 kg of feed & 25 gin of premix/50 kg of feed respectively) did not interfere with the body weight gain of birds; did not have adverse effects on weights of lymphoid organs such as bursa of Fabricius, spleen, thymus, liver; did not interfere with the development of serum antibody in vaccinated or vaccinated and challenged birds; their medication in feed had beneficial effects on serum antibody development; did not result in higher post-challenge mortality of vaccinated birds as compared to the non-medicated vaccinated control birds. The injection to baby chicks on first 4 consecutive post-hatching days with a known immunosuppressive agent (Cyclophosphamide) resulted in lower body weights, destruction of the bursa of Fabricius, poor antibody response of birds to vaccination against NDV, and very high post-challenge mortality, upon challenge with a virulent strain of NDV.
The weight gain studies indicated that vaccinated and non-vaccinated birds on Amprolium and Clopidol medicated feeds had non-significantly higher body wegh ts that those on non-mothcateii ration at 42 days of age. Oopiclo) (Coyden 25), at recommended dosage level, had more beneficial effects on the body weights than the Amprolium. These studies further indicated that vaccinated birds kept on Clopidol medicated feed had significantly higher serum antibody titres on day 42 than the vaccinated non-medicated control birds. The serum antibody titres of vaccinated birds on Clopidol medicated feed were significantly higher than those fed Amprolium at recommended dosage levels. From the results of this study it is concluded that Clopidol and Amprolium are not immunosuppressive drugs when used at recommended dosage levels. They rather have beneficial effects on growth 1)erforr1arIce and immune response of birds. However, there is a need for further investigations.
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 0256,T (Browse shelf) | Available | 0256,T |
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This study indicated that Amprolium and Clopidol (Coyden 25) when used at recommended dosage levels (6.25 gm of pure drug/50 kg of feed & 25 gin of premix/50 kg of feed respectively) did not interfere with the body weight gain of birds; did not have adverse effects on weights of lymphoid organs such as bursa of Fabricius, spleen, thymus, liver; did not interfere with the development of serum antibody in vaccinated or vaccinated and challenged birds; their medication in feed had beneficial effects on serum antibody development; did not result in higher post-challenge mortality of vaccinated birds as compared to the non-medicated vaccinated control birds. The injection to baby chicks on first 4 consecutive post-hatching days with a known immunosuppressive agent (Cyclophosphamide) resulted in lower body weights, destruction of the bursa of Fabricius, poor antibody response of birds to vaccination against NDV, and very high post-challenge mortality, upon challenge with a virulent strain of NDV.
The weight gain studies indicated that vaccinated and non-vaccinated birds on Amprolium and Clopidol medicated feeds had non-significantly higher body wegh ts that those on non-mothcateii ration at 42 days of age. Oopiclo) (Coyden 25), at recommended dosage level, had more beneficial effects on the body weights than the Amprolium. These studies further indicated that vaccinated birds kept on Clopidol medicated feed had significantly higher serum antibody titres on day 42 than the vaccinated non-medicated control birds. The serum antibody titres of vaccinated birds on Clopidol medicated feed were significantly higher than those fed Amprolium at recommended dosage levels. From the results of this study it is concluded that Clopidol and Amprolium are not immunosuppressive drugs when used at recommended dosage levels. They rather have beneficial effects on growth 1)erforr1arIce and immune response of birds. However, there is a need for further investigations.
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