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Ukiel Lake (surface area 412 ha, maximum depth 43 m), the largest of the eleven lakes in Olsztyn, consists of four distinct basins, each with different environmental features. The presence of urban infrastructure, including a grid of streets, in the nearest proximity of the lake arises much interest in the recreational use of the lake. The present description of how the lake's shore zone around each...
The biological diversity of zooplankton communities was studied in August 2006 and 2007 in Lake Łuknajno (Masurian Lakeland, NE Poland), a shallow, macrophyte-dominated water body. An analysis of the species composition, abundance, biomass and the values of biocoenotic indices revealed significant differences between the analyzed zooplankton groups. The noted differences were related to trophic levels,...
Trichotillomania (TTM) is most frequently characterized by small bald spots on the posterior part of the body of dogs and cats. The disease arises on a psychogenic basis and is a consequence of distress: the animal deprives itself of hair and brings about skin lesions by intensively licking its body. It has been relatively rarely described in cats and, in the case discussed here, is unique in view...
This study analysed the level of knowledge of regional dishes among the residents and restaurant owners in Kujawy. This objective was realized through questionnaire surveys conducted from October till December 2010. Two questionnaires were used, with closed alternative and open-ended questions covering the concepts of traditional and regional products, the availability and range of these products...
Probiotic microorganisms are known to have the beneficial effects on people's health. Literature data show that the best source of probiotic bacteria are dairy fermented products. Not only dairy fermented foods contain probiotic cells. There are also non-dairy products from fermented vegetables, cereals, soy and meat where a growth of probiotic bacteria takes place. The interest in the application...
This study was aimed at determining the content of cis9transll C18:2 (CLA) acid and of trans isomers of C18:l and C18:2 acids in fat of mould cheeses originating from various producers (from different countries) available on the market in the city of Olsztyn. Analyses were carried out for 20 types of mould cheeses originating from different EU Member States, i.e. Poland (8 types) as well as Denmark,...
The aim of the study was to evaluate the labelling of selected vegetable oils and the provision of required and up-to-date information about their quality. Eight vegetable oils, including 2 rapeseed oils and 6 mixtures, were used as the study material. Evaluation of labelling involved analysing information provided on oil labels in terms of its compliance with the requirements set out in Tłuszcze...
The aim of the work was to assess the phenotypic value of conformation of standard chinchillas depending on their age groups. The research embraced a population of chinchillas (1986 individuals including: 1231 females and 755 males) from the breeding farm in the kujawsko-pomorskie voivodship within the years 2003-2010. Analyzed features included: animal size, color type, color purity, fur quality,...
Strawberry fruits (Fragaria x ananassa Duch.) are valued by consumers for their high nutritional qualities, taste and visual values. In this work the literature review was made about the influence of different factors on sugar, organic acids, vitamin C, poliphenols and antocyanins content in strawberry fruits. It was found, that selection of strawberry cultivar combined with agricultural practices...
Efficacy of biopreparation of Enatin to control pathogenic and facultative pathogenic microflora of stock farms has been established in laboratory and industrial conditions. Pilot-plant technology of Enatin production and application was elaborated. As a result of investigations Enatin preparation was registered as an agent for preventive disinfection of pig sty complexes and recommended for application...
A Computer Assisted Sperm Analysis system, CASA, enables determination of numerous parameters characterizing sperm motion activity. This system allows for the examination of the effect of various environmental factors on spermatozoa motility parameters. The aim of this work was to compare time-dependent motility changes of sperm obtained from the dace, Leuciscus leuciscus (L.), by abdominal massage...
A study has been conducted of reproduction of the rosy barb (Puntius conchonius) under controlled conditions. This fish are commonly kept in aquaria and are also a model fish used in research studies. It has been shown that rosy barb spawners should be kept in water at 20oC before reproduction, with 23oC being the optimum temperature for reproduction and eggs incubation. The interval between successive...
The aim of the presented research was to determine the effect of the applied mixing system on the efficiency of the methane fermentation process. The effect of the substrate dosing method (in batches, continuous) on the efficiency of biogas production was simultaneously analysed. The presented research was carried out on a pilot scale using a fermentation reactor equipped with an innovative mixing...
The aim of the study was to perform comparative characterisation of different olive oils with respect to important quality features. Two groups of olive oils, 4 samples of extra virgin oil and 4 samples of refined oils (2 olive oil and 2 pomace) were used as the study material. The quality features under analysis included: the content of phenolic compounds, tocopherols, squalene, products of hydrolysis...
The aim of this study was to analyze multi-annual changes of the taxonomic structure and the intensity of the algal community development in phytoplankton of Kortowskie Lake, as a basis for determination of trophic state in the lake. There were observed qualitative and quantitative changes in the phytoplankton community. Species richness decreased in the subsequent years of the study. The number of...
Multi-component fertilizers are increasingly used due to their easy application, solubility and complex composition. A clear advantage of multi-component fertilizers over simple fertilizers is that the former supply a combination of nutrients at a time. The objective of this study was to determine the effect of multi-component fertilizers, Amofosmag 4 and Amofosmag 3, on winter triticale yield, and...
Investigations into the use of algae for energy production have been carried out for many years. A key issue is the selection of technology for culture and acquisition of algae biomass for energetic purposes. The proliferation and culture of algae may be conducted with a variety of methods, beginning from strictly monitored methods in closed laboratory systems, to less predictable methods in open...
The ecosystem of Lake Baikal has been recognized for its uniqueness as well as the need to preserve its natural structure and functions. Commercial fishery, and especially large catches of Baikal omul, Coregonus autumnalis migratorius, influence the general biological diversity of the lake. The paper discusses main guidelines for managing commercial fishing and presents the population structure of...
The lichenological study was conducted in the “Skałki Piekło pod Niekłaniem” Nature Reserve and its surroundings in the Świętokrzyskie Mts. The aim of the study was to present the current state of lichen biota and changes that have occurred in the species composition in the last 100 years. A total of 168 species of lichens and lichenicolous fungi were found in the investigated area. There are currently...
Floristic research carried out in the region of Warmia and Mazury led to the discovery, on 16 May 2011, of a small cranberry stand in a forest, in a small raised bog with enclaves characteristic of transitional moors. The discussed stand is situated in the southern part of the Olsztyn Forest Division, district 499, in the vicinity of the eastern boundary of the Lake Kośno landscape reserve.
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