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Morphological pattern of the livers of different lines of broiler chickens during rearing

Author

Listed:
  • M. Gesek

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • J. Szarek

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • I. Otrocka-Domagala

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • I. Babinska

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • K. Pazdzior

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • M. Szweda

    (Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland)

  • A. Andrzejewska

    (Medical University, Bialystok, Poland)

  • B. Szynaka

    (Medical University, Bialystok, Poland)

Abstract

The aim of this study was to analyse the microscopic and ultrastructural lesions of the livers of broiler chickens during fattening. Three genetic lines of broiler chickens (Ross 308, Cobb 500, Hubbard F15) were investigated. The liver samples were taken on the 3rd, 10th, 17th, 24th, 31st, and 38th day of life from six healthy broiler chickens from each commercial broiler flock. The dominant microscopic lesions were associated with prolonged hypoxia and bile ductules, including: fatty, vacuolar and parenchymatous degeneration, necrosis of epithelial cells of bile ductules, necrosis of hepatocytes around the proliferating bile ductules, lymphoid cell infiltration around the bile ductules and blood vessels, proliferation of the bile ductules, proliferation of the connective tissue around bile ductules and stimulation of the lymph nodules. Ultrastructural evaluation revealed abnormalities involving mitochondria and rough endoplasmic reticulum. The mitochondria underwent swelling, polymorphism, proliferation and damage. The rough endoplasmic reticulum underwent defragmentation and acinar transformation. The cytoplasm of most hepatocytes showed vacuoles of varying size or lipid droplets and the presence of cytoplasmic myelin-like structures. This study shows that the livers of broiler chickens are the most predisposed to the occurrence of lesions on the 17th, 31st and 38th days of life.

Suggested Citation

  • M. Gesek & J. Szarek & I. Otrocka-Domagala & I. Babinska & K. Pazdzior & M. Szweda & A. Andrzejewska & B. Szynaka, 2013. "Morphological pattern of the livers of different lines of broiler chickens during rearing," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 58(1), pages 16-24.
    • Handle: RePEc:caa:jnlvet:v:58:y:2013:i:1:id:6652-vetmed
    DOI: 10.17221/6652-VETMED
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