Milk production of dairy cows fed differing concentrations of rumen-degraded protein

Journal of Dairy Science

Volumn 89, Issue 1, 2006, Pages 249-259

  Kalscheur, K F ^a,b,c   Baldwin VI, R L ^b   Glenn, B P ^b,d   Kohn, R A ^a  

^a UNIVERSITY OF MARYLAND   (United States)

^b AGRICULTURAL RESEARCH SERVICE   (United States)

^c SOUTH DAKOTA STATE UNIVERSITY   (United States)

^d Biotechnology Industry Organization   (United States)

Author keywords

Milk urea nitrogen; Nitrogen efficiency; Protein requirement; Rumen degraded protein

Indexed keywords

BOS TAURUS; GLYCINE MAX; ZEA MAYS;

EID: 30844459008     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(06)72089-6     Document Type: Article

References (27)

1. Allen, M. S. 1999. Effects of diet on short-term regulation of feed intake by lactating dairy cows. J. Dairy Sci. 83:1598-1624.
2. AOAC. 1990. Official Methods of Analysis. 15th ed. Association of Official Analytical Chemists, Arlington, VA.
3. Armentano, L. E., S. J. Bertics, and J. Riesterer. 1993. Lack of response to addition of degradable protein to a low protein diet fed to midlactation dairy cows. J. Dairy Sci. 76:3755-3762.
4. Bibby, J., and H. Toutenburg. 1977. Pages 16-19 in Prediction and Improved Estimation in Linear Models. John Wiley & Sons, London, UK.
5. Capitol Commodity Services, Inc. 2005. Online. Available at: www.ccstrade.com/quotes/historical/ Accessed July 8, 2005.
6. Clark, J. H., T. H. Klusmeyer, and M. R. Cameron. 1992. Microbial protein synthesis and flows of nitrogen fractions to the duodenum of dairy cows. J. Dairy Sci. 75:2304-2323.
7. Dinn, N. E., J. A. Shelford, and L. J. Fisher. 1998. Use of the Cornell Net Carbohydrate and Protein System and rumen-protected lysine and methionine to reduce nitrogen excretion from lactating dairy cows. J. Dairy Sci. 81:229-237.
8. Erdman, R. A., J. H. Vandersall, E. Russek-Cohen, and G. Switalski. 1987. Simultaneous measures of rates of ruminal digestion and passage of feeds for prediction of ruminal nitrogen and dry matter digestion in lactating dairy cows. J. Anim. Sci. 64:565-577.
9. Faverdin, P. 1999. The effect of nutrients on feed intake in ruminants. Proc. Nutr. Soc. 58:523-531.
10. Gill, J. L. 1978. Design and Analysis of Experiments in the Animal and Medical Sciences; Vol. I. Iowa State University Press, Ames.
11. Hristov, A. N., R. P. Etter, J. K. Ropp, and K. L. Grandeen. 2004. Effect of dietary crude protein level and degradability on ruminal fermentation and nitrogen utilization in lactating dairy cows. J. Anim. Sci. 82:3219-3229.
12. Jonker, J. S., R. A. Kohn, and R. A. Erdman. 1998. Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows. J. Dairy Sci. 81:2681-2692.
13. Kalscheur, K. F., B. P. Glenn, R. L. Baldwin, and R. A. Kohn. 2000. Effect of increasing ruminally degraded protein on ruminal and total tract digestion of nutrients of dairy cows. J. Dairy Sci. 83(Suppl. 1):297. (Abstr.)
14. Kohn, R. A., K. F. Kalscheur, and M. Hanigan. 1998. Evaluation of models for balancing the protein requirements of dairy cows. J. Dairy Sci. 81:3402-3414.
15. Kohn, R. A., K. F. Kalscheur, and E. Russek-Cohen. 2002. Evaluation of models to estimate urinary nitrogen and expected milk urea nitrogen. J. Dairy Sci. 85:227-233.
16. Licitra, G., T. M. Hernandez, and P. J. Van Soest. 1996. Standardization of procedures for nitrogen fractionation of ruminant feeds. Anim. Feed Sci. Technol. 57:347-358.
17. Mead, R., R. N. Curnow, and A. M. Hasted. 1993. Pages 76-79 in Statistical Methods in Agriculture and Experimental Biology. 2nd ed. Chapman and Hall, London, UK.
18. Mertens, D. R. 2002. Gravimetric determination of amylase-treated neutral detergent fiber in feeds with refluxing in beakers or crucibles: Collaborative study. J. AOAC 85:1217-1240.
19. M'hamed, D., P. Faverdin, and R. Verite. 2001. Effects of the level and source of dietary protein on intake and milk yield in dairy cows. Anim. Res. 50:205-211.
20. National Research Council. 1989. Nutrient Requirements of Dairy Cattle. 6th rev. ed. Natl. Acad. Sci., Washington, DC.
21. National Research Council. 2001. Nutrient Requirements of Dairy Cattle. 7th rev. ed. Natl. Acad. Sci. Washington, DC.
22. SAS Institute. 1996. SAS/STAT Software: Changes and Enhancements through Release 6.11. SAS Inst., Inc., Cary, NC.
23. Spanghero, M., and Z. M. Kowalski. 1997. Critical analysis of N balance experiments with lactating cows. Livest. Prod. Sci. 52:113-122.
24. Stokes, S. R., W. H. Hoover, T. K. Miller, and R. Blauweikel. 1991a. Ruminal digestion and microbial utilization of diets varying in type of carbohydrate and protein. J. Dairy Sci. 74:871-881.
25. Stokes, S. R., W. H. Hoover, T. K. Miller, and R. P. Manski. 1991b. Impact of carbohydrate and protein levels on bacterial metabolism in continuous culture. J. Dairy Sci. 74:860-870.
26. Wohlt, J. E., and J. H. Clark. 1978. Nutritional value of urea versus preformed protein for ruminants. I. Lactation of dairy cows fed corn based diets containing supplemental nitrogen from urea and/or soybean meal. J. Dairy Sci. 61:902-915.
27. USDA. 2005. Milk Marketing Order Statistics, Agricultural Marketing Service, USDA. http://www.ams.usda.gov/dyfmos/mib/nass_fedord_prc.htm Accessed July 8, 2005.