Response of 2 breeds of broiler chicks to experimental infection with low dose of Eimeria tenella sporulated oocysts

Authors : İsa Danladi JATAU, Augustine Nnamdi ODIKA, Mathew THLAMA

Pages : 398-404

Doi:10.3906/vet-1306-22

View : 19 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study evaluated the effect of low-grade Eimeria tenella infections in broiler chicks of Cobb insert ignore into journalissuearticles values(C); and Marshal insert ignore into journalissuearticles values(M); breeds. Birds from the experimental group of each breed were orally infected with 3000 sporulated oocysts of E. tenella and examined for weight gain, feed conversion ratio insert ignore into journalissuearticles values(FCR);, packed cell volume insert ignore into journalissuearticles values(PCV);, total leukocyte count insert ignore into journalissuearticles values(WBC);, total plasma protein insert ignore into journalissuearticles values(TP);, gross lesion scores, and histopathological changes 10 days after infection. There were 31.7% and 15.7% reductions in the mean weight gain of experimental groups of C and M, respectively, compared to their controls; this was statistically significant insert ignore into journalissuearticles values(P < 0.05); in C but not insert ignore into journalissuearticles values(P > 0.05); in M. Differences in FCR values between infected and control groups were 0.4 and 0.04 in C and M, respectively. There were no significant differences insert ignore into journalissuearticles values(P > 0.05); between the mean PCV and WBC values of the infected and control groups in either breed, but the mean TP values were significantly lower insert ignore into journalissuearticles values(P < 0.05); in the experimental groups of both breeds. Mean gross lesion scores were significantly higher in C than in M insert ignore into journalissuearticles values(P < 0.05); but the histopathological changes observed were similar in both breeds.
Keywords : Response, experimental infection, Eimeria tenella, broilers, breeds