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Milk Urea Concentration to the Evaluation of Nitrogen Efficiency Transformation on Dairy Farms


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1. Aguilar, M., Hanigan, M. D., Tucker, H. A., Jones, B. L., Garbade, S. K., McGilliard, L. M., et al., 2012: Cow and herd variation in milk urea nitrogen concentrations in lactating dairy cattle. J. Dairy Sci., 95, 12, 7261—7268. DOI: 10.3168/jds.2012-5582.10.3168/jds.2012-5582 Search in Google Scholar

2. Archibeque, S. L., Freetly, H. C., Ferrell, C. L., 2007: Net portal and hepatic flux of nutrients in growing wethers fed high-concentrate diets with oscillating protein concentrations. J. Anim. Sci., 85, 4, 997—1005. DOI: 10.2527/jas. 2006-547. Search in Google Scholar

3. Bibby, J., Toutenburg, H., 1977: Prediction and Improved Rstimation in Linear Models. London, John Wiley, 188 pp. Search in Google Scholar

4. Broderick, G. A., Clayton, M. K., 1997: A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen. J. Dairy Sci., 80, 11, 2964—2971. DOI: 10.3168/jds.S0022-0302(97)76262-3.10.3168/jds.S0022-0302(97)76262-3 Search in Google Scholar

5. Broderick, G. A., 2003: Effects of varying dietary protein and energy levels on the production of lactating dairy cows. J. Dairy Sci., 86, 4, 1370—1381, DOI: 10.3168/jds.S0022-0302 (03)73721-7. Search in Google Scholar

6. 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

7. DePeters, E. J., Ferguson, J. D., 1992: Nonprotein nitrogen and protein distribution in the milk of cows. J. Dairy Sci., 75, 11, 3192—3209. DOI: 10.3168/jds.S0022-0302(92)78085-0.10.3168/jds.S0022-0302(92)78085-0 Search in Google Scholar

8. Eicher, R., 2004: Evaluation of the metabolic and nutritional situation in dairy herds: Diagnostic use of milk component. In Proceedings of the WBC Congress, July 11—16, 2004, Québec, Canada. Available at http://www.ivis.org/proceedings/wbc/wbc2004/WBC2004-Eicher-simple.pdf (20 July 2012). Search in Google Scholar

9. Gourley, C. J. P., Aarons, S. R., Powell, J. M., 2012: Nitrogen use efficiency and manure management practices in contrasting dairy production systems. Agric. Ecosyst. Environ., 147, 73—81. DOI: 10.1016/j.agee.2011.05.011.10.1016/j.agee.2011.05.011 Search in Google Scholar

10. Huhtanen, P., Hristov, A. N., 2009: A meta-analysis of the effects of dietary protein concentration and degradability on milk protein yield and milk N efficiency in dairy cows. J. Dairy Sci., 92, 7, 3222—3232. DOI: 10.3168/jds.2008-1352.10.3168/jds.2008-1352 Search in Google Scholar

11. Huhtanen, P., Cabezas-Garcia, E. H., Krizsan, S. J., Shin-gfield, K. J., 2015: Evaluation of between cow variation in milk urea and rumen ammonia nitrogen concentrations and the association with nitrogen utilization and diet digestibility in lactating cows. J. Dairy Sci., 98, 5, 3182—3196. DOI: 10. 3168/jds.2014-8215.10.3168/jds.2014-8215 Search in Google Scholar

12. Kohn, R. A., Kalscheur, K. F., Hanigan, M., 1998: Evaluation of models for balancing the protein requirements of dairy cows. J. Dairy Sci., 81, 12, 3401—3414. DOI: 10.3168/jds.S0022-0302(98)75904-1.10.3168/jds.S0022-0302(98)75904-1 Search in Google Scholar

13. Kohn, R. A., 2007: Use of milk or blood urea nitrogen to identify feed management inefficiencies and estimate nitrogen excretion by dairy cattle and other animals. Florida Ruminant Nutrition Symposium, Jan. 30—31, Gainesville, USA. PDF Corpus ID: 13378510, 1—15. Search in Google Scholar

14. McDonald, P., Edwards, R. A., Greenhalgh, J. F. D., Morgan, C. A., Sinclair, L. A., Wilkinson, R. G., 2011: Animal Nutrition. 7th edn., Harlow, New York: Prentice Hall/Pearson, 714 pp. Search in Google Scholar

15. Nousiainen, J., 2004: Development of Tools for the Nutritional Management of Dairy Cows on Silage-based Diets. Academic dissertation, Faculty of Agriculture and Forestry of the University of Helsinki, 69 pp. Search in Google Scholar

16. Nousiainen, J., Shingfield, K. J., Huhtanen, P., 2004: Evaluation of milk urea nitrogen as a diagnostic of protein feeding. J. Dairy Sci., 87, 2, 386—398. DOI: 10.3168/jds.S0022-0302 (04)73178-1. Search in Google Scholar

17. NRC 2001: Nutrient Requirements of Dairy Cattle. 7th rev. edn., 263—265. Search in Google Scholar

18. Olmos Colmenero, J. J., Broderick, G. A., 2006: Effect of dietary crude protein concentration on milk production and nitrogen utilization in lactating dairy cows. J. Dairy Sci., 89, 5, 1704—1712. DOI: 10.3168/jds.S0022-0302(06)72238-X.10.3168/jds.S0022-0302(06)72238-X Search in Google Scholar

19. Oudah, E. Z. M., 2009: Non genetic factors affecting somatic cell count, milk urea content, test day milk yield and milk protein percent in dairy cattle of Czech Republic using individual test day records. Livest. Res. Rural Dev., 21, 5, 1—25. DOI: 10.21608/jappmu.2009.119192.10.21608/jappmu.2009.119192 Search in Google Scholar

20. Pacheco, L. F., 2016: Relations entre la composition du lait et les facteurs alimentaires dans les troupeaux laitiers Québécois. Available at https://corpus.ulaval.ca/jspui/handle/20.500.11794/27160?locale=fr. Search in Google Scholar

21. Powell, J. M., Gourley, C. J. P., Rotz, C. A., Weaver, D. M., 2010: Nitrogen use efficiency: A potential performance indicator and policy tool for dairy farms. Environ. Sci. Policy, 13, 3, 217—228. DOI: 10.1016/j.envsci.2010.03.007.10.1016/j.envsci.2010.03.007 Search in Google Scholar

22. Reynolds, C. K., Kristensen, N. B., 2008: Nitrogen recycling through the gut and the nitrogen economy of ruminants: an asynchronous symbiosis. J. Anim. Sci., 86 (14 Suppl.), E293—E305. DOI: 10.2527/jas.2007-0475.10.2527/jas.2007-047517940161 Search in Google Scholar

23. Spek, J. W., Dijkstra, J., van Duinkerken, G., Hendriks, W. H., Bannink, A., 2013: Prediction of urinary nitrogen and urinary urea nitrogen excretion by lactating dairy cattle in northwestern Europe and North America: A meta-analysis. J. Dairy Sci., 96, 7, 4310—4322. DOI: 10.3168/jds.2012-6265.10.3168/jds.2012-626523664347 Search in Google Scholar

24. Wattiaux, M. A., Ranathunga, S., 2016: Milk urea nitrogen as a tool to assess efficiency of nitrogen utilization in dairy cows. In Proceedings of Four-State Dairy Nutrition and Management Conference, Dubuque Iowa, June 15—16, 79—88. Search in Google Scholar

25. Tan, Z., Murphy, M. R., 2004: Ammonia production, ammonia absorption, and urea recycling in ruminants. A review. J. Anim. Feed Sci., 13, 3, 389—404. DOI: 10.22358/jafs/67425/2004.10.22358/jafs/67425/2004 Search in Google Scholar

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Life Sciences, Molecular Biology, Biotechnology, Microbiology and Virology, Medicine, Veterinary Medicine