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Open access

Beata Seremak, Bogumiła Pilarczyk, Agnieszka Tomza-Marciniak, Renata Pilarczyk, Andrzej Jakubczak, Małgorzata Dziadosz, Kamil Pławski and Diana Hendzel

Assessment of Selenium Concentration in Selected Organs of Farmed Raccoon Dogs (Nyctereutes Procyonoides)

The aim of the study was to determine selenium concentrations in the liver, kidneys, lungs, heart and muscles of farmed raccoon dogs (Nyctereutes procyonoides) and to evaluate their impact on hair coat quality. Selenium concentration was determined using the modified Watkinson's spectrofluorometric method. Subjects were 20 farmed raccoon dogs (Nyctereutes procyonoides) at the age of 8-9 months, which were kept on a farm in south-eastern Poland. The results show that liver selenium content averaged 0.23±0.10 μg/g w.w. (wet weight). The concentrations ranged from 0.04 to 0.49 μg/g w.w. Kidney selenium concentration (0.49±0.17 μg/g w.w. on average) was over twice that of liver concentration. Animals with higher scores for hair coat quality had lower selenium concentrations in the kidneys and liver, and higher selenium concentrations in muscles, but the differences were not significant. When relating Se concentrations determined in the liver of raccoon dogs to the biochemical criteria, it is concluded that 80% of the analysed raccoon dogs were deficient in this element and 20% had marginal levels. The results obtained in our study suggest that the food used on the farm did not fully meet the Se requirement of the raccoon dogs.

Open access

Agnieszka Tylkowska, Bogumiła Pilarczyk, Renata Pilarczyk, Michał Zyśko and Agnieszka Tomza-Marciniak

Abstract

Introduction: Foxes are a reservoir of parasites that are dangerous to humans. The aim of the study was to determine the parameters associated with the occurrence of tapeworms in red foxes in north-western Poland.

Material and Methods: Parasitological sections were taken from 620 red foxes using IST and SCT methods in 18 districts of West Pomerania Province.

Results: The extensity of fox infection with tapeworms was 61%. Echinococcus multilocularis, Mesocestoides spp., Dipylidium caninum, and specimens of the genus Taenia were identified. E. multilocularis was found in 11 districts. Mesocestoides spp. demonstrated the highest prevalence (41.3%), while E. multilocularis demonstrated the lowest prevalence (2.9%); however, it infected foxes with the greatest mean intensity (235.6 tapeworms per fox). The most common co-occurrence in a single host organism was observed for Mesocestoides spp. and tapeworms of the genus Taenia; however, no examples were found of coinfection by E. multilocularis and D. caninum.

Conclusion: The occurrence of tapeworms in foxes was high in West Pomerania Province and was often higher than observed in previous years. For this reason, the risk of parasite transmission to humans and domestic animals is mounting. The risk of infection is also amplifying due to the growth of the fox population.