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The objective of the study was to determine if there were differences in Cr, Mn, Cu, Cd, Pb and Ni levels in coat hair and hoof horn between Polish Konik horses maintained in stabled and reserve systems in Roztocze National Park in Poland. Summer and winter feeding seasons (seasons of the year in case of hooves) and age of horses were taken into account. 107 samples of hair and hooves, as well as all kinds of feed and sources of water available for the horses were examined. The results of the study indicate that the concentration of the elements in the coat hair, hoof horn, feeds and water is usually too low to show possible influence of the system of maintenance in feeding seasons and age effect. The reserve horses are not more exposed to heavy metal contamination than the stabled horses. In the hair, solely Mn level is affected by the systems of maintenance in summer and winter feeding seasons: during winter it is higher, particularly in the stabled system, than during summer. In hooves, Cr concentration is higher in stabled horses than in reserve horses and conversely, Cu content is higher in the reserve horses. Mn content is age-affected both in hair and hooves, likewise is Cu content in the hooves. The results indicate a necessity of Cu compound supplementation in feeding the horses in both systems of maintenance.
The aim of the study was to determine the prevalence of infection with gastrointestinal parasites in Polish Konik horses from Poland and those imported from the Netherlands. The prevalence and rate of infection was determined based on coproscopic examination using Willis-Schlaf and Mc-Master methods. Faecal samples were tested for the presence of Cryptosporidium sp. using a modified Ziehl-Neelsen staining method. Mean prevalence of infection with gastrointestinal parasites in Polish Koniks imported from the Netherlands and those from Poland was 100%. Imported horses were found to harbour nematodes of the family Strongylidae (89.47%) and Cyathostominae (94.74%) as well as Parascaris equorum (5.26%) roundworms. Domestic Polish Koniks were found to harbour Strongylidae (100%) and Cyathostominae (100%) nematodes as well as Cryptosporidium sp. protozoa (2.27%). Domestic horses were more infected with Cyathostominae (865 EPG) and Strongylidae (731 EPG) than horses imported from the Netherlands (739 and 600 EPG, respectively). The study demonstrated that Polish Koniks from Poland and those imported from the Netherlands should be monitored parasitologically because endoparasites may create a major epizootiological problem when these animals are kept in an organic production system.
Blue dun colour with no white markings represents a trait of the Polish Konik horse breed. However, in spite of long-term selection, non-blue-dun individuals, and those with the markings have still been appearing. The aim of this study was to analyse the genetic structure of the Polish Konik population with respect to coat colour and, on this basis, to propose improved methods of selection. The material comprised Polish Konik horses registered in all eight volumes of the studbook published so far.
The blue dun colour shade is not a selection criterion in Polish Konik horse breeding, hence it has been possible to undertake the analysis of its inheritance on the example of this population. The material consisted of Polish Konik horses registered in the Studbook.
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