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Hodnocení faktorů ovlivňujících ekonomiku produkce mléka
Nastasyuk, Iryna
This thesis deals with the evaluation of various factors that affect the economy of milk produc-tion. First part is focused on the factors that influence the quantity and quality of produced milk and its monetization. The following part describes the situation on the market in Czech Republic and Ukraine. The basic datas, presented in this thesis, about the market in Czech Republic and Ukraine are: cattle population, productivity of dairy cows, production of milk, prices on milk, consumption of milk and dairy products and influence of the state on milk production.
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Occurrence of aflatoxin M1 in raw milk
UHLÍKOVÁ, Tereza
Mycotoxins, as secondary products of fungi, can contaminate feeds and enter the milk through the metabolic pathway in the cow's body. The most studied mycotoxin associated with milk contamination is aflatoxin M1 (AFM1). The review focuses on the identification of different types of mycotoxins and their transfer to milk, and attention is paid to a summary of the results of monitoring aflatoxins in milk and the negative effects of mycotoxins on health and the possibility of mycotoxins determination. The practical part of the thesis consists of two subchapters, namely monitoring AFM1 in raw milk of cows, sheep and goats in the years 2006-2020 from the data of the State Veterinary Administration of the Czech Republic, where the factor of the observed period and type of milk was evaluated for AFM1 content in raw milk. The second part interprets the results of AFM1 monitoring in purchased raw cow's milk delivered to the dairy factory.
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Monitorování pohlavní aktivity u mléčného skotu
Horáková, Nikola
The aim of the bachelor thesis was to determine the influence of the season and estrus order on the auxiliary indicators of estrus. The observation was carried out in 300 cows of the Holstein breed. Changes in movement activity, daily milk production and milk conductivity were found in estrus. No significant changes have been detected in the milking length and in the number of passages between the feed and water chute. The results indicated changes in physical activity, daytime milk and milk conductivity during the heat period.
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Studium změn chemického složení a kvality kravského mleziva v závislosti na čase, věku plemenice a způsobu výživy v době stání na sucho
Fröhdeová, Martina
The dissertation is focused on assessing the influence of yeast culture and selenium addition on yeast culture in feed diet, on colostrum quality and blood serum parameters. The content of immunoglobulins G and the density of colostrum, as the main parameters of the quality of the colostrum, were evaluated in the first born cows and other cows on the second and higher lactation and compared with each other. At the same time, blood serum parameters were also monitored as supplementary indications of feeding intervention in the feed diet of breeds. The main aim of the work was to evaluate the influence of additions of feed additives on the quality and composition of colostrum. Immunoglobulins G were analyzed in all colostrum and blood serum samples. IgG were determined by the ELISA method. The results obtained indicate that the addition of yeast culture and selenium to yeast culture did not have the expected positive effect on improving the quality and composition of cows' colostrum or on blood serum indicators.
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