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Comparison of parasite-specific immunoglobulin levels in two chicken lines during sustained infection with Ascaridia galli

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Authors:
  • Norup, Liselotte Rothmann ;
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    Aarhus University
  • Dalgaard, Tina S. ;
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    Aarhus University
  • Pleidrup, Janne ;
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    Aarhus University
  • Permin, Anders ;
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    National Food Institute, Technical University of Denmark
  • Schou, Torben Wilde ;
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    DHI Water - Environment - Health
  • Jungersen, Gregers ;
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    Orcid logo0000-0003-3147-6960
    National Veterinary Institute, Technical University of Denmark
  • Fink, Dorte R. ;
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    National Veterinary Institute, Technical University of Denmark
  • Juul-Madsen, Helle R.
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    Aarhus University
DOI:
10.1016/j.vetpar.2012.07.031
Abstract:
Increasingly large numbers of poultry are held in production systems with access to outdoor areas. In these systems intestinal helminths are found with flock prevalences of up to 100%. Helminth infections influence chicken health negatively, which is why the following investigation has been performed.In the present experiment, 20 chickens of two inbred chicken lines containing the major histocompatibility complex (MHC) haplotypes, B14 and R5, were inoculated with 500 embryonated Ascaridia galli eggs. The A. galli-specific IgG titres of serum samples and the excretion of A. galli eggs in chicken faeces were measured for a period of 81 weeks.The level of excreted A. galli eggs measured as eggs per gram chicken faeces (EPG) varied greatly between chickens in each line. Significant differences were found between the two lines and with the R5 chickens reaching the highest levels. Likewise, the A. galli-specific IgG titres in serum differed significantly between the two lines, and an inverse relationship between infection level (EPG) and antibody titres was found. Although this inverse relationship suggests that humoral immunity may be involved in protection against A. galli infection, the high antibody titres did not prevent continued infection.
Type:
Journal article
Language:
English
Published in:
Veterinary Parasitology, 2013, Vol 191, Issue 1-2, p. 187-190
Keywords:
Chicken; Ascaridia galli; Immune response; Immunoglobulin levels; chicken; ascaridia galli; immune response; immunoglobulin levels
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Submission year:
2013
Scientific Level:
Scientific
ID:
232798686

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