[
1. Abdouli, H., Rekik, B., Haddad-Boubaker, A., 2008: Non-nutritional factors associated with milk urea concentrations under Mediterranean conditions. World J. Agric. Sci., 4, 2, 183—188. DOI: 10.12691/wjar-9-3-3.
]Open DOISearch in Google Scholar
[
2. Arunvipas, P., Dohoo, I. R., Vanleeuwen, J. A., Keefe, G. P., 2003: The effect of non-nutritional factors on milk urea nitrogen levels in dairy cows in Prince Edward Island, Canada. Prev. Vet. Med., 59, 1—2, 83—93. DOI: 10.1016/s0167-5877(03)00061-8.
]Open DOISearch in Google Scholar
[
3. Baul, S., Cziszter, L. T., Acatincai, S., Cismas, T., Gavojdian, D., Tripon, I., Erina, S., Buzamat, G., 2013: Effect of parity on dynamics of milk yield and composition during normal lactation in dairy cows. J. Anim. Sci. Biotechnol., 46, 2, 285—289.
]Search in Google Scholar
[
4. Bauman, D. E., Griinari, J. M., 2003: Nutritional regulation of milk fat synthesis. Annu. Rev. Nutr., 23, 203—227. DOI: 10.1146/annurev.nutr.23.011702.073408.
]Open DOISearch in Google Scholar
[
5. Bendelja, D., Prpić, Z., Mikulec, N., Ivkić, Z., Havranek. J., Antunac, N., 2011: Milk urea concentration in Holstein and Simmental cows. Mljekarstvo, 61, 1, 45—55.
]Search in Google Scholar
[
6. Bondan, C., Folchini, J. A., Noro, M., Quadros, D. L., Machado, K. M., González, F. H. D., 2018: Milk composition of Holstein cows: A retrospective study. Cienc. Rural, 48, 12, 1—8. DOI: 10.1590/0103-8478cr20180123.
]Open DOISearch in Google Scholar
[
7. Cao, Z., Huang, W., Wang, T., Wang, Y., Wen, W., Ma, M., Li, S., 2010: Effects of parity, days in milk, milk production and milk components on milk urea nitrogen in Chinese Holstein. J. Anim. Vet. Adv., 9, 4, 688—695. DOI: 10.3923/java.2010.688.695.
]Open DOISearch in Google Scholar
[
8. Commission Regulation (EC) No. 691/2013, 2013: Amending Regulation (EC) No. 152/2009 as regards methods of sampling and analysis. OJEU, L 197/1—L197/12.
]Search in Google Scholar
[
9. Čobanović, K., Kučević, D., Plavšić, M., Bogdanović, V., 2017: Impact of non-nutritional factors on milk urea concentration and its relationship with production and fertility traits in Vojvodina dairy herds. Mljekarstvo, 67, 4, 267—276. DOI: 10.15567/mljekarstvo.2017.0404.
]Open DOISearch in Google Scholar
[
10. Godden, S. M., Lissemore, K. D., Kelton, D. F., Leslie, K. E., Walton, J. S., Lumsden, J. H., 2001: Factors associated with milk urea concentrations in Ontario dairy cows. J. Dairy Sci., 84, 1, 107—114. DOI: 10.3168/jds.S0022-0302(01)74458-X.
]Open DOISearch in Google Scholar
[
11. Hojman, D., Kroll, O., Adin, G., Gips, M., Hanochi, B., Ezra, E., 2004: Relationship between milk urea and production, nutrition and fertility trails in Israeli dairy herd. J. Dairy Sci., 87, 4, 1001—1011. DOI: 10.3168/jds.S0022-0302(04)73245-2.
]Open DOISearch in Google Scholar
[
12. IBM Corporation Released, 2016: IBM SPSS Statistics for Windows, Version 24.0. Armonk, NY, IBM Corporation.
]Search in Google Scholar
[
13. Idamokoro, E. M., Muchenje, V., Masika, P. J., 2017: Yield and milk composition at different stages of lactation from a small herd of Nguni, Boer, and non-descript goats raised in an extensive production system. Sustainability, 9, 6, 1000. DOI: 10.3390/su9061000.
]Open DOISearch in Google Scholar
[
14. Jílek, F., Řehák, D., Volek, J., Štípková, M., Němcová, E., Fiedlerová, M., Rajmon, R., Švestková, D., 2006: Effect of herd, parity, stage of lactation and milk yield on urea concentration in milk. Czech J. Anim. Sci., 51, 12, 510—517. DOI: 10.17221/3971-CJAS.
]Open DOISearch in Google Scholar
[
15. Johnson, R. G., Young, A. J., 2003: The association between milk urea nitrogen and DHI production variables in western commercial dairy herds. J. Dairy Sci., 86, 9, 3008—3015. DOI: 10.3168/jds.S0022-0302(03)73899-5.
]Open DOISearch in Google Scholar
[
16. Konjačić, M., Kelaval, N., Ivkić, Z., Ivanković, A., Prpi, Z., Vnučec, I., Ramljak, J., Mijić, P., 2010: Non-nutritional factors of milk urea concentration. Mljekarstvo, 60, 3, 166—174.
]Search in Google Scholar
[
17. Maas, J. A., France, J., McBride, B. W., 1997: Model of milk protein synthesis. A mechanistic model of milk protein synthesis in the lactating bovine mammary gland. J. Theor. Biol., 187, 3, 363—378. DOI: 10.1006/jtbi.1997.0437.
]Open DOISearch in Google Scholar
[
18. Marenjak, T., Poljičak-Milas, N., Stojević, Z., 2004: The aim of urea determination in cows’ milk (In Croatian, English abstract). Praxis Veterinaria, 52, 3, 233—241.
]Search in Google Scholar
[
19. Miglior, F., Sewalem, A., Jamrozik, J., Lefebvre, D. M., Moore, R. K., 2006: Analysis of milk urea nitrogen and lactose and their effect on longevity in Canadian dairy cattle. J. Dairy Sci., 89, 12, 4886—4894. DOI: 10.3168/jds.S0022-0302(06)72537-1.
]Open DOISearch in Google Scholar
[
20. NRC 2001: Nutrient Requirements of Dairy Cattle. 7th rev. edn., 263—265.
]Search in Google Scholar
[
21. Nyamushamba, G. B., Halimani, T. E., Imbayarwo-Chikosi, V. E., Tavirimirwa, B., 2014: Comparative evaluation of non-genetic factors affecting milk yield and composition of Red Dane and Jersey cattle in Zimbabwe. Springer Plus, 3, 88. DOI: 10.1186%2F2193-1801-3-88.
]Open DOISearch in Google Scholar
[
22. Pytlewski, J., A-ntkowiak, I., Skrzypek, R., 2010: Relationships between somatic cells counts and urea level in the milk of polish Holstein-Friesian cows of black-and-white and red-white varieties. Acta Sci. Pol., 9, 2, 39—50.
]Search in Google Scholar
[
23. Rajala-Schultz, P. J., Saville, W. J., 2003: Sources of variation in milk urea nitrogen in Ohio dairy herds. J. Dairy Sci., 86, 5, 1653—1661. DOI: 10.3168/jds.S0022-0302(03)73751-5.
]Open DOISearch in Google Scholar
[
24. Stoop, W. M., Bovenhuis, H., Van Arendonk, J. A. M., 2007: Genetic parameters for milk urea nitrogen in relation to milk production traits. J. Dairy Sci., 90, 4, 1981—1986. DOI: 10.3168/jds.2006-434.17369239
]Open DOISearch in Google Scholar
[
25. Tripathi, M. K., 2014: Effect of nutrition on production, composition, fatty acids and nutraceutical properties of milk. J. Adv. Dairy Res., 2, 2, 1—11. DOI: 10.4172/2329-888X.1000115.
]Open DOISearch in Google Scholar
[
26. Vijayakumar, M., Park, J. H., Ki, K. S., Lim, D. H., Kim, S. B., Park, S. M., et al., 2017: The effect of lactation number, stage, length, and milking frequency on milk yield in Korean Holstein dairy cows using automatic milking system. Asian-Australas. J. Anim. Sci., 30, 8, 1093—1098. DOI: 10.5713/ajas.16.0882.549448228423887
]Open DOISearch in Google Scholar
[
27. Yoon, J. T., Lee, J. H., Kim, C. K., Chung, Y. C., Kim, C. H., 2004: Effects of milk production, season, parity and lactation period on variations of milk urea nitrogen concentration and milk components of Holstein dairy cows. Asian-Australas. J. Anim. Sci., 17, 4, 479—484. DOI: 10.5713/ajas.2004.479.
]Open DOISearch in Google Scholar
