The aim of this work was to evaluate the quality of raw cow's milk during the year depending on the breed. In two agricultural companies, respectively in three farms there were monitored total bacteria count (TBC), somatic cell count (SCC), residues of inhibitory substances (RIS), freezing point, protein content and fat content in 2015. Limits of TBC given by European Union (100,000/ml) were kept in all farms. Limits set for SCC (400,000/ml) were exceeded in 25% samples in breeding I and the average value was significantly increased (p <0.001) in comparison to breeding II and III. These results suggest a possible occurrence of subclinical mastitis. For the company it means a significant economic loss. RIS has not been found in any sample. Average protein content of monitored breeding was not too different (3.69; 3.70; 3.67%). Fat content in breeding I (3.84%) was statistically significantly decreased (p <0.001) in comparison to breeding II and III (4.18 4.12%).
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:251947 |
| Date | January 2016 |
| Creators | ROZHON, Tomáš |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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