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The aim of the present study was to verify the feasibility of using live Artemia salina nauplii embedded with fluorochromes for the mass marking of pike Esox lucius (L.) larvae. In the experiment, pike larvae 6 days post hatch were fed ad libitum with nauplii dyed with 600 ppm tetracycline hydrochloride (TC) or 200 ppm alizarin red S (ARS) for 3 or 6 days. The highest percentage of marked fish (100%)...
The aim of the study was determination of changes in quality traits of eggs depending on storage conditions. The study material were 360 table eggs laid by 52 weeks of age laying hens, Tetra SL, being in their peak of egg production. The eggs were stored at a temperature of 4 and 23°C. Evaluation of egg quality was carried out on the 1st, 7th, 14th, 21st, and 28th day, analyzing 40 eggs from each...
The aim of this study was to determine the fatty acid profile of cheese and tvorog milk fat obtained from the local producers from the region of north-eastern Poland. The material consisted of tvorog and cheese samples made from cow, goat and sheep’s milk. Methyl esters of fatty acids in milk fat was prepared with the use of IDF Standard 1999 and was performed by the gas chromatography method. Differences...
Spotted souslik is one of the most endangered mammal species in Poland. Over the last few decades of the 20th century its population gradually decreased due to the influence of natural and anthropogenic factors: degradation of species habitats and reduction of their acreage. The aim of the study is to examine changes in the population of spotted souslik in eastern Poland, against threats to the species...
The aim of this study was to determine the influence of sheep’s milk hygienic quality parameters on its composition and physical characteristics. During the three-year study 140 samples of Olkuska sheep milk were collected for analyzes. The samples were taken during the morning milking, and then were tested to determine the composition, physical properties, the presence of inhibitory substances, somatic...
Isotonic drinks belong to a group of products which are becoming more and more popular among teenagers, sportsmen, as well as the elderly and fitness-oriented people. The proper osmolality of isotonic drinks should be of 300 mOsm kg⁻¹ of water ±10%. The objective of this study is to analyse whether the isotonic drinks available on the Tricity market (the area of three cities: Gdańsk, Sopot, Gdynia)...
This study discusses the popularity of meat from traditional and alternative poultry species in the catering industry. Data for analysis was obtained directly from questionnaires filled out by persons who were responsible for the selection of food ingredients in catering establishments. The respondents were asked about the use of traditional and alternative poultry species in their restaurants and...
The study presents the results of lichenological researches carried out in Sokółka town (Podlaskie voivodeship, north-eastern Poland). The investigations in the area of Sokółka were carried out in the years 2012–2013, on 50 research stands. In total, 76 species of lichens growing on natural and anthropogenic substrata have been recorded. The distributions of lichens in different urban lands are presented...
Vegetables are a very important element of the human diet due to the fact that they are carriers of many bioactive substances. Tomatoes are among them as a valuable source of dietary fibre, antioxidants (carotenoids, flavonols, vitamin C, tocopherol). Unused tomato waste resulting from the production of juice and paste can be used for making functional foods. The aim of the research was to characterise...
The colour of light is a very important environmental factor that affects fish physiology. The aim of the present study was to evaluate the effects of different colours of light on weight gain, length, condition factor and specific growth rates of the juvenile rainbow trout Oncorhynchus mykiss. The study employed fertilized eggs that were exposed separately to seven colour lamps including white (573...
Plastic films are of key importance as a group of materials used for packaging food products. It is therefore crucial that they meet specific functional and durability requirements as well as comply with all regulations regarding food contact materials. A degree to which a set of properties of these materials satisfies the requirements connected with their usage determines their functional value....
The research was conducted on weed infestation of potato crops in fields with different soils in several (9) municipalities in the Zamość region in 2014–2015 were compared with the results of research carried out in 1991–1995. The phytosociological photos were created by Braun-Blanquet’s method, of which 87 representative images were selected for analysis. The photos were taken on three complexes...
The aim of the study was to characterise the problem of road accidents involving selected species of wild-living animals present in the area of Lublin. Another aim of the investigations was to determine the relationship between selected behavioural elements of the annual life cycle of animals and the incidence of wildlife-vehicle collisions. The information about wildlife-vehicle collisions was obtained...
The study evaluated three biotypes of cherry silverberry (obtained from the Institute for Fruit Growing in Samokhvalovitchy in Belarus) for cultivation under the conditions of north-eastern Poland in comparison to the form reproduced and cultivated at the University of Warmia and Mazury in Olsztyn. It was demonstrated that the natural conditions of Olsztyn permit cultivation of the examined cherry...
Our analysis deals with the land development and management for tourist and recreational purposes around Drwęckie Lake, a water body lying in the limits of the town Ostróda. A lot of tourists and residents in summer season can be attributed to the spatial management, a wide range of hospitality facilities and many opportunities to practice water sports and to hold mass events. Another aspect we analyzed...
Along with the storage time, in the egg content there occur changes based of which their quality and condition of egg freshness may be determined. The aim of the study was determination of the effect of 7-week storage period at a temperature of 4°C on the quality of Japanese quail eggs. The eggs were analyzed at one-week intervals to determine their morphological composition. No statistically significant...
The paper provides an analysis of the variability in grain yield by a number of the winter wheat cultivars in Lower Silesia based on Post-Registration Variety Testing experiments carried out in 2010, 2011 and 2013. The study analyzes the yield values of nine winter wheat cultivars obtained intrials performed within the frames of the Post-Registration Variety Testing Agrotechnical System(PDO) in Lower...
Two methods were used in a laboratory experiment to assess the effect of stimulation of sugarbeet seed clusters. Four duration times of exposure to magnetic field (MF) were used:P1(10 s),P2(30 s),P3(60 s) andP4(300 s) and two different doses of semiconductor laser radiation (LR) applied(five-and ten-fold irradiation by the basic dose of 0.25 J cm–2, respectively). Subsequently, the sowingvalue of...
The aim of this study was to identify changes in the physical properties of fenugreek seeds(Trigonella foenum-graecumL.), observed in agricultural experiments with multifactorial designs.The thousand seed weight, true density, bulk density, color and spectral composition, linear dimensions, shape factors and textural properties of fenugreek seeds were determined. The resultswere processed statistically...
Poultry meat, with regard to lower fat content than the one in other animal species, is consideredby consumers as dietetic. It also constitutes a source of complete protein, iron and minerals. It is alsocheaper than red meat. In recent years, national poultry meat market has been developing very dynamically, and Poland with poultry meat production at the level of 2,420,000 tons belongs tosignificant...
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