J Vet Sci.  2015 Jun;16(2):173-177. 10.4142/jvs.2015.16.2.173.

Relationship between chicken cellular immunity and endotoxin levels in dust from chicken housing environments

• Roque K
• Shin KM
• Jo JH
• Kim HA
• Heo Y

• KMID: 2164526
• DOI: http://doi.org/10.4142/jvs.2015.16.2.173

Abstract

Hazardous biochemical agents in animal husbandry indoor environments are known to promote the occurrence of various illnesses among workers and animals. The relationship between endotoxin levels in dust collected from chicken farms and various immunological markers was investigated. Peripheral blood was obtained from 20 broiler chickens and 20 laying hens from four different chicken farms in Korea. Concentrations of total or respirable dust in the inside the chicken farm buildings were measured using a polyvinyl chloride membrane filter and mini volume sampler. Endotoxin levels in the dust were determined by the Limulus Amebocyte Lysate Kinetic method. Interferon-gamma production by peripheral blood mononuclear cells stimulated with concanavalin A was significantly lower in broilers or layers from the farms with higher endotoxin concentrations than the chickens from the farms with lower endotoxin levels. An opposite pattern was observed for plasma cortisol concentrations with higher cortisol levels found in chickens from the farms with higher endotoxin levels. When peripheral lymphocytes were examined, the percentage of CD3-Ia+ B cells was lower in layers from farms with higher endotoxin levels than those from locations with lower endotoxin levels. Overall, these results suggest a probable negative association between dust endotoxin levels and cell-mediated immunity in chickens.

Keyword

cellular immunity; chicken; endotoxin; dust; interferon-gamma

MeSH Terms

Animal Husbandry
Animals
Biomarkers/blood
Chickens/*immunology
Dust/*analysis
Endotoxins/*analysis
*Housing, Animal
*Immunity, Cellular
Biomarkers
Dust
Endotoxins

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