Supplemental dietary protein for grazing dairy cows: Effect on pasture intake and lactation performance

Journal of Dairy Science

Volumn 84, Issue 4, 2001, Pages 896-907

  McCormick, M E ^a   Ward, J D ^a   Redfearn, D D ^a   French, D D ^a   Blouin, D C ^a   Chapa, A M ^a   Fernandez, J M ^b  

^a LOUISIANA STATE UNIVERSITY AGRICULTURAL CENTER   (United States)

^b NONE

Author keywords

Dairy cows; Dietary protein; Milk; Pasture

Indexed keywords

BOS TAURUS; CYNODON; GLYCINE MAX; LOLIUM MULTIFLORUM; ZEA MAYS;

ANIMAL; ANIMAL FOOD; ARTICLE; CALORIC INTAKE; CATTLE; CHEMISTRY; DRUG EFFECT; FEMALE; LACTATION; MAIZE; METABOLISM; MILK; PHYSIOLOGY; POACEAE; PROTEIN INTAKE; RUMINANT STOMACH; SILAGE; SOYBEAN;

ANIMAL FEED; ANIMALS; CATTLE; DIETARY PROTEINS; ENERGY INTAKE; FEMALE; LACTATION; MILK; POACEAE; RUMEN; SILAGE; SOYBEANS; ZEA MAYS;

EID: 0035321765     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(01)74547-X     Document Type: Article

References (22)

1. Adkinson, R. W., W. S. Farmer, and B. F. Jenny. 1993. Feeding practices and income over feed cost on pasture-oriented dairy farms in Louisiana. J. Dairy Sci. 76:3547-3554.
2. Association of Official Analytical Chemists. 1990. Official Methods of Analysis. 15th ed. AOAC, Arlington, VA.
3. Brown, T. F., M. E. McCormick, D. R. Morris, and L. K. Zeringue. 1989. Effects of dietary boron on mineral balance in sheep. Nutr. Res. 9:503-512.
4. Cuomo, G. J., D. C. Blouin, D. L. Corkern, J. E. McCoy, and R. Walz. 1996. Plant morphology and forage nutritive value of three bahiagrasses as affected by harvest frequency. Agron. J. 88:85-89.
5. Goering, H. K., and P. J. Van Soest. 1970. Forage fiber analyses (apparatus, reagents, procedures, and some applications). USDA-ARS Handbook no. 379, U. S. Gov. Print. Office, Washington, DC.
6. Hoffman, K., L. D. Muller, S. L. Fales, and L. A. Holden. 1993. Quality evaluation and concentrate supplementation of rotational pasture grazed by lactating cows. J. Dairy Sci. 76:2651-2663.
7. Holden, L. A., L. D. Muller, and S. L. Fales. 1994. Estimation of intake in high producing Holstein cows grazing grass pasture. J. Dairy Sci. 77:2332-2340.
8. Hongerholt, D. D., and L. D. Muller. 1998. Supplementation of rumen undegradable protein to the diets of early lactation Holstein cows on pasture. J. Dairy Sci. 81:2204-2214.
9. Joanning, S. W., D. E. Johnson, and B. P. Barry. 1981. Nutrient digestibility depressions in corn silage-corn grain mixtures fed to steers. J. Anim. Sci. 53:1095-1103.
10. Krishnamoorthy, V., T. V. Muscato, C. J. Sniffen, and P. J. Van Soest. 1982. Nitrogen fractions in selected feedstuffs. J. Dairy Sci. 65:217-225.
11. Kung, L., and J. T. Huber. 1983. Performance of high producing cows in early lactation fed protein of varying amounts, sources, and degradability. J. Dairy Sci. 66:227-234.
12. McCormick, M. E., D. D. French, T. F. Brown, G. J. Cuomo, A. M. Chapa, J. M. Fernandez, J. F. Beatty, and D. C Blouin. 1999. Crude protein and rumen undegradable protein effects on reproduction and lactation performance of Holstein cows. J. Dairy Sci. 82:2697-2708.
13. National Research Council. 1989. Nutrient Requirements of Dairy Cows. 6th rev. ed. Nat. Acad. Sci. Washington, DC.
14. Nelson, B. D., and C. R. Montgomery. 1975. Comparison of chemical analysis and in vitro fermentation techniques for forage quality evaluation. Pages 130-137 in Southeast Res. Stn. Annu. Prog. Rep., Louisiana Agric. Exp. Stn., Franklinton.
15. Parker, W. J., L. D. Muller, S. L. Fales, and W. T. McSweeney. 1993. A survey of dairy farms in Pennsylvania using minimal or intensive pasture grazing systems. Prof. Anim. Sci. 9:77-85.
16. Petit, H. V., and G. F. Tremblay. 1992. In situ degradability of fresh grass and grass conserved under different harvesting methods. J. Dairy Sci. 75:774-781.
17. Redmon, L. A., T. F. McCullum, III, G. W. Horn, M. D. Cravey, S. A. Gunter, P. A. Beck, J. M. Mieres, and R. S. Julian. 1995. Forage intake by beef steers grazing winter wheat with varied herbage allowances. J. Range Manage. 48:198-201.
18. SAS User's Guide: Statistics, Version 6.08, 6th Edition. 1989 SAS Inst., Inc., Cary, NC.
19. Stern, M. D., and L. D. Satter. 1984. Evaluation of nitrogen solubility and the dacron bag technique as methods for estimating protein degradation in the rumen. J. Anim. Sci. 58:714-724.
20. Twigg, J. R., and L. G. Van Gils. 1988. Practical aspects of feeding protein to dairy cows. Pages 196-212 in Recent Developments in Ruminant Nutrition 2. W. Haresign and D.J.A. Cole, eds. Buttersworth, London, England.
21. Van Soest, P. J., J. B. Robertson, and B. A. Lewis. 1991. Methods for dietary fiber, neutral detergent fiber,and non-starch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74:3583-3597.
22. Zimmerman, C. A., A. H. Rakes, R. D Jaquette, B. A. Hopkins, and W. J. Croom, Jr. 1991. Effects of protein level and forage source on milk production and composition in early lactation dairy cows. J. Dairy Sci. 74:980-990.