Factors affecting raw milk quality of dairy cows under practical conditions


  • Vladimí­r Tančin Slovak University of Agriculture, Faculty of Agrobiology and Food Resources, Department of Veterinary Sciences, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia, NPPC-Research Institute for Animal Production Nitra, Hlohovecká 2, 95141 Lužianky, Slovakia, Tel.: +421903546401 https://orcid.org/0000-0003-2908-9937
  • Šimon Mikláš Slovak University of Agriculture, Faculty of Agrobiology and Food Resources, Department of Veterinary Sciences, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia, Tel.: +421949398431 https://orcid.org/0000-0001-5019-4809
  • Maroš Čobirka Mendel University Brno, Faculty of AgriSciences, Department of Morphology, Physiology and Animal Genetics, Zemědělská 1/1665, 613 00 Brno, Czech Republic Tel.: +421907159348
  • Michal Uhrinčať NPPC – Research Institute for Animal Production Nitra, Hlohovecká 2, 95141 Lužianky, Slovakia, Tel.: +421376546656 https://orcid.org/0000-0002-5378-617X
  • Lucia Mačuhová NPPC – Research Institute for Animal Production Nitra, Hlohovecká 2, 95141 Lužianky, Slovakia, Tel.: +4213765466571 https://orcid.org/0000-0002-9624-1348




dairy cows, data, milk, performance


Under the practical conditions, it is important to evaluate the factors affecting milk performance. Data from test day yield and milk components should be useful for such evaluation. The aim of the experiment was to study the effect of season, udder health (by somatic cell counts SCC), parity, stage of lactation on milk production, milk components, and SCC under the practical conditions. Also, the frequency of incidence of high SCC during the season was observed. The experiment was realized on one dairy farm in dairy practice. The experiment lasted from December 2015 to October 2017. We examined 481 Holstein dairy cows (6910 milk samples). Milk samples were collected once per month – performed by recording test day. Only cows with 9 – 11 test days were evaluated. The effect of season, parity, stage of lactation, and SCC influenced most of the studied traits. The milk yield was highest at 2nd lactation. In the following lactations, the milk yields were decreasing. The SCC significantly increased with advanced parity. The elevated SCC was found in the beginning and in the final part of lactation. SCC as a factor significantly reduced milk yield, lactose content but increased fat and protein content. In conclusion, under practical conditions, the management should use the data from test days and analyze them for a better understanding of the performance efficiency at the farm level and for implementing more sophisticated decision making in farming.


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How to Cite

Tančin, V., Mikláš, Šimon, Čobirka, M., Uhrinčať, M., & Mačuhová, L. (2020). Factors affecting raw milk quality of dairy cows under practical conditions. Potravinarstvo Slovak Journal of Food Sciences, 14, 744–749. https://doi.org/10.5219/1336

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