Concentration of selected transition metals in layer hens non-infested and infested with Dermanyssus gallinae
2012
Spodniewska, A., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Pharmacology and Toxicology | Barski, D., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Pharmacology and Toxicology | Sokol, R., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Parasitology and Invasive Diseases
The aim of this study was to determine the concentration of selected transition metals, Fe, Cu and Zn, in the livers of laying hens free from and infested with the red mite (Dermanyssus gallinae) and to explain the effects of the invasion of this parasite on the content of those elements. The study was carried out on 24 Hy-Line Brown hens bred in battery cages. Fe, Cu and Zn concentrations were determined with atomic absorption spectrophotometry. Based on this experiment, it was proved that a long-term (52 weeks) exposure of hens to D. gallinae resulted in a significant decrease of Fe, Cu and Zn in the liver. The mean concentrations in infested and non-infested hens were as follows: Fe: 31.42 vs. 38.51 mg/kg, Cu: 2.71 vs. 3.12 mg/kg, Zn: 22.64 vs. 26.53 mg/kg. No significant alterations in haematological indicators were found between the examined groups of birds. The results may suggest that 3 weeks of recovery in hens are sufficient to bring about a considerable increase in concentration of analysed transition metals in the liver.
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