Prediction of crude protein and amino acid passage to the duodenum of lactating cows by models compared with in vivo data

Journal of Dairy Science

Volumn 84, Issue 3, 2001, Pages 665-679

  Bateman, H G ^a,e   Clark, J H ^a   Patton, R A ^b   Peel, C J ^c   Schwab, C G ^d  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

^b Nittany Dairy Nutrition   (United States)

^c Degussa Corporation   (United States)

^d UNIVERSITY OF NEW HAMPSHIRE   (United States)

^e LOUISIANA STATE UNIVERSITY AGRICULTURAL CENTER   (United States)

Author keywords

Amino acids; Dairy cows; Modeling; Protein

Indexed keywords

AMINO ACID; NITROGEN; PROTEIN;

ANALYSIS OF VARIANCE; ANIMAL; ANIMAL FOOD; ARTICLE; BIOLOGICAL MODEL; CATTLE; COMPARATIVE STUDY; DUODENUM; FEMALE; LACTATION; METABOLISM; PHYSIOLOGY; THEORETICAL MODEL;

AMINO ACIDS; ANALYSIS OF VARIANCE; ANIMAL FEED; ANIMALS; CATTLE; DUODENUM; FEMALE; LACTATION; MODELS, BIOLOGICAL; MODELS, THEORETICAL; NITROGEN; PROTEINS;

BOS TAURUS;

EID: 0035291393     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(01)74521-3     Document Type: Article

References (23)

1. Agricultural and Food Research Council. 1993. Energy and Protein Requirements of Ruminants. CAB International. Wallingford, United Kingdom.
2. Baldwin, R. L., L. J. Koong, and M. L. Ulyatt. 1977. A dynamic model of ruminant digestion for evaluation of factors affecting nutritive value. Agric. Syst. 2:255-288.
3. Baldwin, R. L., J. H. M. Thornley, and D. E. Beever. 1987. Metabolism of the lactating cow. II. Digestive elements of a mechanistic model. J. Dairy Res. 54:107-131.
4. Bateman, H. G., II, J. H. Clark, R. A. Patton, C. J. Peel, and C. G. Schwab. 2001. Accuracy and precision of computer models to predict passage of crude protein and amino acids to the duodenum of lactating cows. J. Dairy Sci. 84:649-664.
5. Dent, J. B., and M. J. Blackie. 1979. Model evaluation. Pages 94-117 in Systems Simulation in Agriculture. Applied Science Publishers Ltd., London, United Kingdom.
6. Dijkstra, J., H. D. St. C. Neal, D. E. Beever, and J. France. 1992. Simulation of nutrient digestion, absorption and outflow in the rumen: Model description. J. Nutr. 122:2239-2256.
7. Draper, N., and H. Smith. 1966. Applied Regression Analysis. John Wiley & Sons, Inc., New York, NY.
8. France, J., J.H.M. Thornley, and D. E. Beever. 1982. A mathematical model of the rumen. J. Agric. Sci. (Camb.) 99:343-353.
9. Graybill, F. A., and H. K. Iyer. 1994. Regression Analysis: Concepts and Applications. Duxbury Press, Belmont, CA.
10. Institut National de la Recherche Agronomique. 1989. Ruminant Nutrition. John Libbey Eurotext, Montrouge, France.
11. Klusmeyer, T. H., G. L. Lynch, J. H. Clark, and D. R. Nelson. 1991a. Effects of calcium salts of fatty acids and protein source on ruminal fermentation and nutrient flow to duodenum of cows. J. Dairy Sci. 74:2206-2219.
12. Klusmeyer, T. H., G. L. Lynch, J. H. Clark, and D. R. Nelson. 1991b. Effects of calcium salts of fatty acids and proportion of forage in diet on ruminal fermentation and nutrient flow to duodenum of cows. J. Dairy Sci. 74:2220-2232.
13. Mayer, D. G., and D. G. Butler. 1993. Statistical validation. Ecol. Model. 68:21-32.
14. McCarthy, R. D., Jr., T. H. Klusmeyer, J. L. Vicini, J. H. Clark, and D. R. Nelson. 1989. Effects of source of protein and carbohydrate on ruminal fermentation and passage of nutrients to the small intestine of lactating cows. J. Dairy Sci. 72:2002-2016.
15. National Research Council. 1989. Nutrient Requirements of Dairy Cattle, 6th rev. ed. Natl. Acad. Sci., Washington, DC.
16. National Research Council. 1996. Nutrient Requirements of Beef Cattle, 7th rev. ed. Natl. Acad. Sci., Washington, DC.
17. Overton, T. R., M. R. Cameron, J. P. Elliott, J. H. Clark, and D. R. Nelson. 1995. Ruminal fermentation and passage of nutrients to the duodenum of lactating cows fed mixtures of corn and barley. J. Dairy Sci. 78:1981-1998.
18. Putnam, D. E., C. G. Schwab, M. T. Socha, N. L. Whitehouse, N. A. Kierstead, and B. D. Garthwaite. 1997. Effect of yeast culture in the diets of early lactation dairy cows on ruminal fermentation and passage of nitrogen fractions and amino acids to the small intestine. J. Dairy Sci. 80:374-384.
19. Rahnema, S. H., and B. Theurer. 1986. Comparison of various amino acids for estimation of microbial nitrogen in digesta. J. Anim. Sci. 63:603-612.
20. Russell, J. B., J. D. O'Connor, D. G. Fox, P. J. Van Soest, and C. J. Sniffen. 1992. A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation. J. Anim. Sci. 70:3551-3561.
21. SAS User's Guide: Statistics, Version 5 Edition 1985. SAS Inst., Inc., Cary, NC.
22. Schwab, C. G., C. K. Bozak, N. L. Whitehouse, and M.M.A. Mesbah. 1992. Amino acid limitation and flow to the duodenum at four stages of lactation. 1. Sequence of lysine and methionine limitation. J. Dairy Sci. 75:3486-3502.
23. Theil, H. 1966. Measuring the accuracy of point predictions. Pages 15-36 in Applied Economic Forecasting. North Holland Publishing Company. Amsterdam.