Experimental Induction Of Coccidiosis In Broiler Chicks With Eimeria Tenella And Comparative Efficacy Of Different
By: Noora Jan Issot
| Dr. Hajid Ahmad Hashmi.
Contributor(s): Dr. Muhammad | Dr. Muhammad Afzal | Faculty of Veterinary Sciences.
Material type: 
BookPublisher: 1994Subject(s): Department of ParasitologyDDC classification: 0381,T Dissertation note: The study was designed to look into the immunogenic properties of Eimeria tenella. Two hundred and twenty five day old broiler chickens were reared under controlled conditions. They were equally divided into five groups i.e. A, B, C, D, and E. Group 'A' was kept as uninfected control. Group 'B' acted as infected control, which was infected with 50,000 sporulated oocysts at day 15, 25 and 35 of age. Group 'C' acted as infected and treated, which received sporulated oocysts on day 15, 25 and 35 alongwith 5 days treatment with salinomycine (60 ppm in finished feed) after 3 days of each primary and challenge dose. To group 'D' 1000 live sporulated oocysts were administered orally at day 3 and 10. Similarly, 'E' group received formalin treated 1000 sporulated oocysts orally at day 3 and 10 of age of chickens. Subsequently the members of group D and E received challenge infections of 50,000 Eimeria tenella sporulated oocysts at day 15, 25 and 35.
Immunogenicity was measured by the passage of oocysts per gm of faeces and by comparative weight gains amongst different groups. It was noticed that no coccidiosis could be established in groups A, C and E and the OPG counts remained nil throughout the period of experimnt. Group B showed high counts and group 'D' showed moderate ounts but towards the completion of experiment the OPG counts gradually reduced to 8400 and 6100 respectively, in both group.
Weight gains recorded were 473, 393, 316 and 310 gin. greater in A, E, D, and C respectively, as compared with group B. Group E depicted 1OC% protection and remained second to the uninfected control group A in respect of weight gains. Group 'D', although developed infection but due to acquired immunity became resistant to challenge infections and was placed 3rd in weight gain. Inspite of complete protection in group C due to Salinomycine treatment, the weight gains remained lower than group D and E.
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 0381,T (Browse shelf) | Available | 0381,T |
The study was designed to look into the immunogenic properties of Eimeria tenella. Two hundred and twenty five day old broiler chickens were reared under controlled conditions. They were equally divided into five groups i.e. A, B, C, D, and E. Group 'A' was kept as uninfected control. Group 'B' acted as infected control, which was infected with 50,000 sporulated oocysts at day 15, 25 and 35 of age. Group 'C' acted as infected and treated, which received sporulated oocysts on day 15, 25 and 35 alongwith 5 days treatment with salinomycine (60 ppm in finished feed) after 3 days of each primary and challenge dose. To group 'D' 1000 live sporulated oocysts were administered orally at day 3 and 10. Similarly, 'E' group received formalin treated 1000 sporulated oocysts orally at day 3 and 10 of age of chickens. Subsequently the members of group D and E received challenge infections of 50,000 Eimeria tenella sporulated oocysts at day 15, 25 and 35.
Immunogenicity was measured by the passage of oocysts per gm of faeces and by comparative weight gains amongst different groups. It was noticed that no coccidiosis could be established in groups A, C and E and the OPG counts remained nil throughout the period of experimnt. Group B showed high counts and group 'D' showed moderate ounts but towards the completion of experiment the OPG counts gradually reduced to 8400 and 6100 respectively, in both group.
Weight gains recorded were 473, 393, 316 and 310 gin. greater in A, E, D, and C respectively, as compared with group B. Group E depicted 1OC% protection and remained second to the uninfected control group A in respect of weight gains. Group 'D', although developed infection but due to acquired immunity became resistant to challenge infections and was placed 3rd in weight gain. Inspite of complete protection in group C due to Salinomycine treatment, the weight gains remained lower than group D and E.
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