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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Vermicomposting of wine production waste
 Clark, Oskar William ; Innemanová, Petra (advisor) ; Grasserová, Alena (referee)
Vermicomposting is a method of biological waste management, with the potential for valuable returns in the form of biofertilisers and savings of time and effort. These qualities make vermicomposting ideal for the processing of winery waste materials. Vermicomposting has advantages over traditional composting in terms of the speed of transformation of the input materiál, but also in terms of producing a safe fertiliser. Waste materials from the wine industry, which primarily include grape marc and winery wastewater, have several properties that can contribute to phytotoxic effects in soil. This thesis provides an overview of the management of waste materials from the wine industry, the differences between white and red wine production, and the suitability of vermicomposting for application in small- and large-scale winery waste management. The experimental part of this thesis examines the time requirement of vermicomposting to transform grape marc into a material that does not possess properties that inhibit plant growth. Experimental measurements of the relationship between vermicompost age and germination inhibition show that vermicomposting increases the pH of the substrate and stabilizes it over time. The experiment also showed that vermicompost has a statistically significant stimulatory...
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Comperison quality of eggs depending on form of feeding
 PROCHÁZKOVÁ, Alice
The topic of my dissertation is Comparison of the quality of eggs depending on the method of feeding. The aim of this study was to investigate whether the quality of hen eggs changes after adding crushed grape seeds in the compound feed of the hens. Grape seeds are formed as a side product during wine making processes and contain large amounts of biologically active substances and suitable acids, which can improve the feed conversion and subsequently also improve the technological properties of eggs. With processing of grape seeds the effective utilization of crop residues in vineyards comes about. The experiment was conducted in two experimental periods and in each period 100 laying hens were surveyed. They were separated into two groups an experimental and a control one. In the control group the hens were fed with a standard mixture of N2 feed and in the experimental group there was a supplement of 5 weight percent of crushed grape seeds in the compound feed. Eggs were collected daily and once every two weeks an analysis of technological properties of eggs was conducted. The results of the experiment showed that the addition of crushed grape seeds containing a biologically active substance did not have a statistically significant effect on the quality and selected technological parameters of eggs.
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