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The diploma thesis is focused on the occurrence and development of psychrotrophic microorganisms and their influence on meat and meat products, two experimental experiments were carried out. The first analysis concerns the determination of the microbial quality of pork and chicken meat packaged simply and in vacuum. The relationship between the development of microbiological contamination has been evaluated, depending on the storage life and the packaging method. Microbiological analysis samples were taken from the day of slaughter of slaughter animals, followed by the 1st, 3rd, 7th and 11th day of storage. This experiment was performed in two replicates. In the second analysis the development of CPM and psychrotrophic microorganisms in samples of heat treated meat products with the addition of whey and fiber, as well as during storage, was monitored. Laboratory analysis was performed immediately after manufacture and subsequently after 7, 10 and 14 days of storage without vacuum packing or packing in a protective atmosphere.

Diploma thesis: "Evaluation of growth intensity and meat production of fattening bulls on a specific farm" aims to evaluate the intensity of growth in fattening bulls Agricultural Society as Vítějeves. Evaluation of growth intensity was carried out on 142 bulls of different breeds. Animals were weighed on a quarterly basis according to the weight divided into groups. For each group of animals was measured statistical conclusiveness between weight and additions. Throughout the feed lot bulls were found in the period December 2011 to December 2013 the average weight of 462 kg, average growth was weighing between 918 g.day-1 and average daily gain since birth g.den 998 g.day-1. To evaluate the meat yield of the bulls from the Czech pied cattle breed, the weight was taken on 120th, 210th and 365th day of age, the average daily weight gain since birth was calculated, the average daily weight gain between taking the weight and the weight of body prepared for slaughter was calculated by 1.78 ratio on the animal's weight before the slaughter. Subsequently the effect of the weight, the gain and the slaughter parameters on the slaughter age was assessed and the netto gain and classification to the SEUROP system classes as well. The bulls of Czech Fleckvieh breed average increased within one year of life 774g.day-1, after the one-year increment increased to 967 g.day-1. The average gain from birth to slaughter was 967 g.day-1. Most bulls were slaughtered before the age of 650 days, and their slaughter weight was about 632 kg. For SEUROP bulls were mainly included in class R2. Carcass weight was about 350 kg.