Crude Protein and Non-protein Nitrogen Content in Dairy Cow Milk

1. Bijgaart, H. van den. (2003). Urea. New applications of mid-infra-red spectrometry. Bulletin of the IDF, No. 383, 5-15.Search in Google Scholar

2. Carlsson, B. J., Bergstrom, J., Pehrson, B. (1995). Variations with breed, age, season, yield, stage of lactation, and breed in the concentration of urea in bulk milk and individual cow’s milk. Acta Veterinaria Scandinavica, Vol. 36, 245-254.10.1186/BF03547693Search in Google Scholar

3. Carrol, S. M., DePeters, E. J., Taylor, S. J., Rosenberg, M., Perez-Monti, H., Capps, V. A. (2006). Milk composition of Holstein, Jersey and Brown Swiss cows in response to increasing levels of dietary fat. Animal feed science and technology, Vol. 131, 451-473.10.1016/j.anifeedsci.2006.06.019Search in Google Scholar

4. Coballero, Truco L., Finglas, P. B. (2003). Encyclopedia of Food Sciences and nutrition. Elsever Science, Vol. 6, 3947-3949.Search in Google Scholar

5. DePeters, E. J., Ferguson, J. D. (1992). Nonprotein nitrogen and protein distribution in the milk of cows. Journal of Dairy Science, Vol. 75, No. 11, 3192-3209.Search in Google Scholar

6. DePeters, E. J., Cant, J. P. (1992). Nutritional factors influencing the nitrogen composition of bovine milk. Journal of Dairy Science, Vol. 75, 2043-2070.10.3168/jds.S0022-0302(92)77964-8Search in Google Scholar

7. Ferguson, J. D., Thomasen, N., Slesser, D., Burris, D. (1997). Pennsylvania DHIA milk urea testing. Journal of Dairy Science, Vol. 80, Suppl. 1, 161.Search in Google Scholar

8. 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. Journal of Dairy Science, Vol. 84, 107-114.10.3168/jds.S0022-0302(01)74458-XSearch in Google Scholar

9. Heck, H. J. F, Valenberg, J., Dijkstra, A. C. M., Hooijdonk. (2009). Seasonal variation in the Dutch bovine raw milk composition. Journal of Dairy Science, Vol. 92, 4745-4755.10.3168/jds.2009-2146Search in Google Scholar

10. Hof, G., Lenaers, P. J., Tamminga, S. (1997a). Monitoring protein utilization by use of milk urea nitrogen. Mid-South Ruminant Nutrition Conference, Dallas-Fort Worth Airport, 1-2 May (1997) 74-81. Retrieved 26 October, 2009, from http://txanc.org/wp-content/uploads/2011/08/milkurea.pdf,.Search in Google Scholar

11. Hof, G., Vervoorn, M. D., Lenaers, P. J., Tamminga, S. (1997b). Milk urea nitrogen as a tool to monitor the protein nutrition of dairy cows. Journal of Dairy Science, Vol. 80, 3333-3340.10.3168/jds.S0022-0302(97)76309-4Search in Google Scholar

12. Dairy Science and Technology Handbook. Ed. Y. H. Hui. Vol. 1, 1993, 280-281.Search in Google Scholar

13. International agreement of Recording practices (2011). ICAR (International Committee For Animal Recording. Retrieved 29 February, 2012, from http://www.icar.org/Documents/Rules%20and%20regulations/Guidelines/Guidelines_2011.pdf..Search in Google Scholar

14. Jonker, J. S., Kohn, R. A., High, J. (2002). Dairy herd management practices that impact nitrogen utilization efficiency. Journal of Dairy Science, Vol. 85, No. 5, 1218-1226.Search in Google Scholar

15. Meijier, R. G. M, Remmelink, G. J., Boxem, Tj. (1996) OEB - niveau in melkveerantsoenen (Rumen efflux protein in rations for dairy cattle) Praktijkonderzoek Rundvee, Schapen en Paarden (PR) , 116.Search in Google Scholar

16. Moughan, P., (2012). Dietary protein quality - new perspectives. IDF World dairy summit 2012. Retrieved 20 August, 2013, from http://www.asuder.org.tr/asudpdfler/mevzuat/idfsunumlari/oughan_paul.pdf.Search in Google Scholar

17. Ng-Kwai-Hang, K. F., Hayes, J. F., Moxley, J. E., Monardes, H. G. (1985). Percentages of protein and nonprotein nitrogen with varying fat and somatic cells in bovine milk. Journal of Dairy Science, Vol. 68, 1257-1262.10.3168/jds.S0022-0302(85)80954-1Search in Google Scholar

18. Raden, P. M., Powell, R. L. (2009). Genetic evaluation for true protein. Retrieved 26 October, 2009, from http://aipl.arsusda.gov/reference/trueprot.htm.Search in Google Scholar

19. Roginski, H., Fuauay, J. W., Fox, P. F. (2003). Encyclopedia of Dairy Sciences. Elsever Science, Vol. 3, 1805-1808.Search in Google Scholar

20. Sederevičius, A., Kabasinskiene, A., Savickis, S., Svedaite, V., Makauskas, S. (2008). Milk urea nitrogen as an important indicator of dairy cow nutrition review. Veterinarija ir zootechnika, t. 44 (66).Search in Google Scholar

21. Šustova, K., Ružičkova, J., Kuchtik, J. (2007). Application of FT near spectroscopy for determination of true protein and casein in milk. Czech journal Animal Science, Vol. 52, No 9, 284-291.Search in Google Scholar

22. Твердохлеб, Г. В., Раманаускас, Р. И. (2006). Химия и физика молока и молочных продуктов. (Chemistry and physics of milk and dairy products) Москва : ДеЛи принт, 360.Search in Google Scholar