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

This study evaluated the effect of low-grade Eimeria tenella infections in broiler chicks of Cobb (C) and Marshal (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 (FCR), packed cell volume (PCV), total leukocyte count (WBC), total plasma protein (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 (P < 0.05) in C but not (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 (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 (P < 0.05) in the experimental groups of both breeds. Mean gross lesion scores were significantly higher in C than in M (P < 0.05) but the histopathological changes observed were similar in both breeds.

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

This study evaluated the effect of low-grade Eimeria tenella infections in broiler chicks of Cobb (C) and Marshal (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 (FCR), packed cell volume (PCV), total leukocyte count (WBC), total plasma protein (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 (P < 0.05) in C but not (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 (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 (P < 0.05) in the experimental groups of both breeds. Mean gross lesion scores were significantly higher in C than in M (P < 0.05) but the histopathological changes observed were similar in both breeds.

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  • Haug A, Gjevre A, Skjerve E, Kaldhusdal M. A survey of the economic impact of subclinical Eimeria infections in broiler chickens in Norway. Avian Pathol 2008; 37: 333–341.
  • Long P, Johnson J, Wyatt R. Eimeria tenella: Clinical effects in partially immune and susceptible chickens. Poult Sci J 1980; 59: 2221–2224.
  • Jain NC. Hematologic Techniques. In: Jain NC, editor. Schalm’s Veterinary Hematology. 4th ed. Philadelphia, PA, USA: Lea & Febiger; 1986. pp. 20–86.
  • Campbel TW. Avian Haematology and Cytology. 2nd ed. Ames, IA, USA: Iowa State University Press; 1995. pp. 179–180.
  • Kerr MG. Clinical biochemistry and haematology. In: Veterinary Laboratory Medicine. Oxford, UK: Blackwell Scientific Publications; 1989. pp. 1–30.
  • Lillie RD. Histopathologic Technique and Practical Histochemistry. 3rd ed. New York, NY, USA: McGraw-Hill; 1965. pp. 525–558.
  • Shaban KS. Exacerbating effect of Newcastle disease virus (NDV) infection on subclinical caecal coccidiosis in broilers vaccinated against Newcastle disease virus (NDV). Researcher 2012; 4: 55–59.
  • Broussard C, Teeter R, Beker A, Brown C, Fitz-Coy S, Rabu J, Newman L. The use of calorimetric application to quantify the cost of subclinical coccidiosis at various points in the broiler growth curve. In: Proceedings of the 15th Congress on FAVA. Bangkok, Thailand: FAVA; 2008.
  • Joyner L, Norton C. Eimeria mitis in mixed infections with E. acervulina and E. brunette in the fowl. Parasitol J 1983; 86: 381–390.
  • Fetterer RH, Allen PC. Eimeria tenella infection in chickens: effect on plasma and muscle 3-methylhistidine. Poult Sci 2001; 80: 1549–1553.
  • Fukata T, Komba Y, Sasai K, Baba E, Arakawa A. Evaluation of plasma chemistry and hematological studies on chickens infected with Eimeria tenella and E. acervulina. Vet Rec 1997; 141: 4–46.
  • McDougald LR, Reid MW. Coccidiosis. In: McDougald LR, Reid MW, editors. Diseases of Poultry. 10th ed. Ames, IA, USA: Iowa State University Press; 1997. pp. 865–883.
  • Rose ME, Hesketh P, Ogilvie BM. Peripheral blood leukocyte response to coccidial infection: A comparison of the response in rats and chickens and its correlation with resistance to re- infection. Immunol 1979; 36: 71–79.
  • Ellakany HF, Abuakkada SS, Oda SS, El-Sayed YS. Influence of low levels of dietary aflatoxins on Eimeria tenella infections in broilers. Trop Anim Health Prod 2011; 43: 249–257.
  • Zulpo DL, Peretti J, Ono LM, Longhi E, Oliveira MR, Guimarães IG, Headley S A, Guimarães Junior JS, Garcia JL. Pathogenicity and histopathological observations of commercial broiler chicks experimentally infected with isolates of Eimeria tenella, E. acervulina and E. maxima. Semina: Ciências Agrárias, Londrina 2007; 28: 97–104.
  • Naphade ST, Hiware CJ, Desarda SM. Studies on the pathological changes during experimental caecal coccidiosis of broiler chicks treated with allopathic amprolium and homoeopathic medicine Mercurius corrosivus. Trends Res Sci and Technol 2010; 2: 49–55.
  • Lillehoj HS, Ruff MD, Bacon LD, Lamont S, Jeffers T. Genetic control of immunity to Eimeria tenella. Interaction of MHC gene and non-MHC genes influence concentrations of disease susceptibility. Vet Immunol Immunopathol 1989; 20: 135–148.
  • Bumstead N, Millard BM, Barrow P, Cook JKA. Genetic basis of disease resistance in chickens. In: Owen FB, Axford RFE, editors. Breeding for Disease Resistance in Farm Animals. Wallingford, UK: CAB International; 1991. pp. 10–21.
  • Whiteman CE, Bickford AA. Coccidiosis. In: Avian Disease Manual. 3rd edition. The American Association of Avian Pathologists; 1989.
Turkish Journal of Veterinary and Animal Sciences-Cover
  • ISSN: 1300-0128
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
Sayıdaki Diğer Makaleler

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

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