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Měření vybraných kvalitativních parametrů mléka při dojení skotu
KAŠPAR, Roman
o ensure the quality of milked milk, it is necessary to strictly follow hygienic proce dures both during its acquisition and during treatment and storage. The diploma thesis is focused on monitoring the quality of milk in correlation with the early detection of dairy cow disease using modern technologies. The literature section introduces the general issues of milk quality. The methodology includes a comparison of the accuracy of different methods for detecting milk quality. These methods can be used to identify advanced disease or early onset disease. With early diagnosis, adequate treatment can be started quickly and save money. The highest accuracy is the results from the per formance control (KU), but these laboratory methods are costly and time consuming. The second measurement was performed using optical methods using the portable de vice Ekomilk Horizon. This method is inexpensive, but less accurate than others. The third measurement was using a milking parlor robot. This method is accurate, the pur chase price is high, but the operating cost is no longer so expensive.
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Stanovení kvalitativních parametrů dojeného mléka indikující zdravotní stav dojnic
PROKOP, Daniel
When only automatic systems are used for milking milk, it is essential to evaluate the quality of the milk, preferably in real-time, to maintain the high quality of the products and at the same time to detect health problems in the dairy cow in good time. By early detection of a dairy cow's health problem, which a change in milk quality can detect, it is also possible to reduce the cost of its treatment and eliminate financial losses du ring a period when we cannot monetize milk. To effectively evaluate the quality of milked milk, it is appropriate to monitor the following parameters: somatic cell count, conductivity, fat, protein, lactose, and urea content. The bachelor's thesis presents the levels of the quantities mentioned above, which indicate changes in the quality of milked milk, internal and external influences that affect them, as well as methods for their detection and evaluation
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The evaluation of milk quality in selected countries of European Union
POKORNÝ, Martin
The diploma thesis deals with the assessment of qualitative indicators of raw cow's milk supplies within the European Union (EU) and the Czech Republic (CR), de-pending on the year and course of the year. Within the EU average values for the observed period 2016-2020 were found for fat contents of 4.01 ? 0.26% and protein content of 3.39 ? 0.13%; in the CR 3.91 ? 0.11% and 3.46 ? 0.08%. The effect of the year within the EU countries was demonstrated only in terms of protein content (p <0.001). When evaluating the effect of individual months in EU countries, includ-ing the CR, statistically significant differences in fat (p <0.001) and protein (p <0.001) content were demonstrated. In summer, the values of both components in-creased, while in winter they decreased. The results of the evaluation of bulk milk samples purchased in the CR show, depending on the year, that the effect on the total bacteria count (p <0.001), residues of inhibitory substances (p <0.05) and freez-ing point of milk (p <0.001) was also found. The effect of the year was elicited for the total bacteria count (p <0.05) and the somatic cell count (p <0.001). From the point of view of milk sales, the quality of raw milk is a primary goal for the producer and at the same time a decisive factor in the monetization of this important animal commodity.
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Some factors affecting milk somatic cell count
ŠPIKLOVÁ, Hana
The aim of this thesis was to compare somatic cells count (SCC) in milk depending on certain factors (month, milk system, lactation). Besides of SCC, also other parameters of milk quality were monitored. Milk sampling took place for 11 weeks in 2017 and samples were taken from 15 milked cows of the Czech Simmental breed. During the milk sampling were used two different parameters of pulsation. Pulsation adjustment significantly shortened the time of milking from 7,34 minutes in average to 6,19 minutes in average (P<0,001). After pulsation adjustment the SCC decreased from 188,000/ml to 154,000/ml as well, however, differences were not statistically significant. Concerning other factors the SCC was mostly affected by the number of lactation (P<0.01), primiparous cows had significantly lower values of the SCC (45,000/ml) that multiparous cows (237,000/ml).
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Milk quality from vending machines
JEŘÁBEK, Tomáš
The aim of this work was to assess the quality of milk from vending machines. The quality and microbiological characteristics of raw cow´s milk from two farms were assessed; one from the South Bohemia Region and one from the Pilsen Region.
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ANALYSIS OF SELECTED INDICATORS OF QUALITY OF RAW COW'S MILK IN AGRICULTURAL ENTERPRISE
HUBENÁ, Šárka
The aim of my thesis was to analyze the quality parameters of raw bulk milk with a focus on hygienic and microbiological quality. For this purpose we choose two markers: somatic cell count (SCC) and total bacterial count (TBC). Data were obtained from two dairy farms Dolní Bukovsko and Popovice for the period from June 2008 to February 2011. For statistical evaluation was used MS Excel and Statistics 6.0. SCC and the average TBC values were recorded at higher density in Dolní Bukovsko. However, the averages for these two breeds are consistent with the legislation of the European Union and the Czech Republic (both TBC (?100,000/ml) and SCC (?400,000/ml)). Even though the average TBC value exceeded the limit of the breeding herd health PSB ? 200 thousand / ml, indicating the possible presence of subclinical mastitis and bonded with the considerable economic losses in milk production.
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Somatic cell count in raw cow milk in relation to the used methods of mastitis prevention
MÍKOVÁ, Andrea
Graduation theses are inquired into question of somatic cell count (SCC) in row cow milk in relation to the used methods of mastitis prevention. In the year 2005 and 2006 was following values of SCC in raw cow milk in tetra breeding dairy cows. Breeds are differentating from each other with technology of breeding (horsy, summer pasture), technology of lairege and milking. SCC in bulk tank milk was determined according to ČSN EN ISO 133366 {--} 3 milk. Lowest average funds PSB (156,3 {$\cdot$} 10{$^3$} {$\cdot$} mlˉ{$^1$}) was determined in breeding with summer pasture (loos pen bedding housing). Breed with stanchion bedded housing without pasture (SCC 277,3 {$\cdot$} 10{$^3$} {$\cdot$} mlˉ{$^1$}) and breed with bedding{--}free slatted-floor housing without pasture (SCC 277,4 {$\cdot$}10{$^3$} {$\cdot$} mlˉ{$^1$}) was in a tight spot with inadequancy hygiene of stable and milking. The highest average values of SCC were determinated in loose bedded cubicle housing without pasture (289,1 {$\cdot$} 10{$^3$} {$\cdot$} mlˉ{$^1$}), where was deficiencies in feeding (feeding mouldy silage) and higher dustiness environment. We proved a statistically highly significant difference (P<0,001) between farm using summer pasture and farms without pasture. Main deficiencies in methods of mastitis prevention is that breeds doesn't use individual disposable tissue cloths for the udder wiping, farms doesn't use preddiping, inadequancy in hygiene of lairege and milking, feeding mouldy silage and inadequancy in ransack confirmed dairy cows. Key words: raw cow milk, somatic cell count, technology
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