ADC Evaluation of the milk urea content in relation to milk production and composition in dairy cows / Timkovičová Lacková, Petra; Maskaľová, Iveta ; Vajda, Vladimír. – DOI 10.2754/avb201988030277. – WOS CC ; SCOPUS ; CCC In: Acta Veterinaria Brno [textový dokument (print)] [elektronický dokument] . – Praha (Česko) : SPN – pedagogické nakladatelství, Brno (Česko) : Veterinární a farmaceutická univerzita Brno. – ISSN 0001-7213. – ISSN (online) 1801-7576. – Roč. 88, č. 3 (2019), s. 277-285

Basic data
OCA1. Surname awarded to the assessed personMaskaľová
OCA2. Name awarded to the assessed personIveta
OCA3. Degrees awarded to the assessed personAssoc. prof. , DVM, PhD
OCA4. Hyperlink to the entry of the person in the Register of university staffhttps://www.portalvs.sk/regzam/detail/6064
OCA5. Area of assessmentstudy programme nutrition of animals and dietetics · III. degree
OCA6. Category of the research/artistic/other outputscientific output
OCA7. Year of publication of the research/artistic/other output2019
OCA8. ID of the record in the Central Registry of Publication Activity (CRPA) or the Central Registry of Artistic Activity (CRAA)150505
OCA9. Hyperlink to the record in CRPA or CRAAhttps://app.crepc.sk/?fn=detailBiblioForm&sid=9921973E4D44D17B1D3A72FC32
Characteristics of the output that is not registered in CRPA or CRAA
OCA10. Hyperlink to the record in another publicly accessible register, catalogue of research/ artistic/other outputshttps://www.webofscience.com/wos/woscc/full-record/WOS:000509757500004
OCA11. Characteristics of the output in the format of the CRPA or the CRAA bibliographic record, if the output is not available in a publicly accessible register or catalogue of outputsADC Evaluation of the milk urea content in relation to milk production and composition in dairy cows / Timkovičová Lacková, Petra; Maskaľová, Iveta ; Vajda, Vladimír. – DOI 10.2754/avb201988030277. – WOS CC ; SCOPUS ; CCC In: Acta Veterinaria Brno [textový dokument (print)] [elektronický dokument] . – Praha (Česko) : SPN – pedagogické nakladatelství, Brno (Česko) : Veterinární a farmaceutická univerzita Brno. – ISSN 0001-7213. – ISSN (online) 1801-7576. – Roč. 88, č. 3 (2019), s. 277-285
OCA12. Type of the output (if the output is not registered in CRPA or CRAA) article
OCA13. Hyperlink to the webpage where the output is available (full text, other documentation, etc.)https://actavet.vfu.cz/media/pdf/actavet_2019088030277.pdf
OCA14. Characteristics of the author's contributionCo-author and collaborator
OCA15. Annotation of the output with contextual information concerning the description of creative process and the content of the research/artistic/other activity, etc.The scientific article analyzes the production and composition of milk in year-round monitoring in relation to the level of protein nutrition and metabolic transformation of nitrogen from feed to milk and the level of ecological burden. The evaluated dependences between production, milk components and milk urea are useful as a useful indicator of the nutritional status of the animals.
Other data
OCA16. Annotation of the output in EnglishThe aim of this study was to evaluate the milk urea content along with the dynamics of lactation and milk components in production dependency in Holstein dairy cows. Evaluation of daily milk yield in relation to milk urea presented a positive regression dependency, which was the strongest in early lactation (r= 0.860; P< 0.001), decreasing in mid lactation (r= 0.329; P< 0.001) and late lactation (r= 0.261; P< 0.001). Evaluation of milk protein in relation to milk urea showed a negative regression dependency, which was the strongest in early lactation (r=-0.850; P< 0.001), decreasing in mid lactation (r=-0.819; P< 0.001) and late lactation (r=-0.679; P< 0.001). The somatic cell counts in relation to milk urea confirmed a negative regression dependency in early lactation (r=-0.635; P< 0.05) and mid lactation (r=-0.818; P< 0.05), but no significance was found in late lactation. The results of the study confirm the influence of production factors (milk quantity and milk components) on the milk urea content. Dependencies found between the production, milk components and milk urea are applicable for the evaluation of protein nutrition and metabolic transformation of nutrients in dairy cows.
OCA17. List of maximum 5 most significant citations corresponding to the outputAndjelić, B., Djoković, R., Cincović, M., Bogosavljević-Bošković, S., Petrović, M., Mladenović, J., & Čukić, A. (2022). Vzťahy medzi biochemickými parametrami mlieka a krvi a metabolickým stavom u dojníc počas laktácie. Metabolites , 12 (8), 733. Konečný, R., Horčičková, M., Kváč, M., Hasoňová, L., Samková, E., Nejeschlebová, H., ... & Bartáková, K. (2026). Relationships Among Milk Lactoferrin Content, Metabolic Profiles and Milk Composition During Early Lactation in Holstein Cows. Dairy, 7(1), 9.
OCA18. Characteristics of the output's impact on socio-economic practiceBased on the obtained results and valid, scientifically confirmed regression relations, develop interrelationships for analysis and evaluation of a.) Feeding levels and feed ration in relation to daily production and representation of milk components as a tool to assess the nutritional level and production efficiency b. feed ration into milk based on the amount of milk, the nutritional composition of milk (fat, protein, lactose) and the level of metabolites in milk (urea and ketones in milk) c.) excretion of unused nitrogen in the form of urea in urine as an indicator of inefficient transformation and ecological burden on the farm.
OCA19. Characteristics of the output and related activities' impact on the educational processObjective interdisciplinary evaluation of scientifically confirmed biological dependencies, between intake of nutrient, the metabolic transformation of nutrient in the rumen, and regulation of intermediary metabolism in relation to the synthesis of milk and milk component.

Last updated: 28.10.2026

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