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Influence of rumen ammonia concentration on the rumen degradation rates of barley and maize

Published online by Cambridge University Press:  09 March 2007

J. Odle  and
D.M. Schaefer
J. Odle
Affiliation:
Department of Meat and Animal Science, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
D.M. Schaefer
Affiliation:
Department of Meat and Animal Science, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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Abstract

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1. Four rumen-cannulated steers were given barley and maize diets supplemented with graded levels of an ammonium acetate solution.

2. Animals were fed hourly from automatic feeders and water consumption was controlled to achieve steady-state conditions in the rumen.

3. Dacron bags containing rolled barley or ground barley were incubated in the rumen of barley-fed steers, while ground maize and autoclaved maize were incubated in the rumen of maize-fed steers.

4. Fractional degradation rates of dry matter were estimated for each cereal substrate incubated using a single-pool exponential decay model.

5. No differences in degradation rate due to the method of feed processing were detected; however, barley was degraded at a faster rate than maize. Furthermore, the minimum rumen ammonia-nitrogen concentration required to maximize the degradation rate of barley (125 mg/l) was greater than that required to maximize the degradation rate of maize (61 mg/l).

6. These results indicate that the optimal NH3-N concentration required to maximize the rate of grain digestion in the rumen is influenced by the chemical or structural characteristics of the grain.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 57 , Issue 1 , January 1987 , pp. 127 - 138
Copyright
Copyright © The Nutrition Society 1987

References

REFERENCES

Allen, S. A. & Miller, E. L. (1976). British Journal of Nutrition 36, 353–368.CrossRefGoogle Scholar
Allison, M. J. (1969). Journal of Animal Science 29, 797–807.CrossRefGoogle Scholar
Bailey, C. B. & Balch, C. C. (1961). British Journal of Nutrition 15, 183.CrossRefGoogle Scholar
Bradstreet, R. B. (1965). The Kjeldahl Methodfor Organic Nitrogen, pp. 40–42. New York: Academic Press.Google Scholar
Brotz, P. G. & Schaefer, D. M. (1984). Journal of Animal Science 59, Suppl. 1, 408.Google Scholar
Bryant, M. P. & Robinson, I. M. (1962). Journal of Bacteriology 84, 605–614.CrossRefGoogle Scholar
Chaney, A. L. & Marbach, E. P. (1962). Clinical Chemistry 8, 130–132.CrossRefGoogle Scholar
Cochran, W. G. & Cox, G. M. (1957). Experimental Designs. New York: John Wiley & Sons Inc.Google Scholar
Coleman, G. S. (1979). In Biochemistry and Physiology of Protozoa no. 2, pp. 381–408 [Levandowsky, M. and Hunter, S. H., editors]. New York: Academic Press.Google Scholar
Figroid, W., Hale, W. H. & Theurer, B. (1972). Journal of Animal Science 35, 113–20.CrossRefGoogle Scholar
Finner, M. F. & Baumgardt, B. R. (1963). Journal of Dairy Science 46, 341.CrossRefGoogle Scholar
Goering, H. K. & Van soest, P. J. (1970). Agriculture Handbook no. 379. Washington DC: US Department of Agriculture.Google Scholar
Hume, I. D., Moir, R. J. & Somers, M. (1970). Australian Journal of Agricultural Research 21, 283–96.CrossRefGoogle Scholar
Kang-Meznarich, J. H. & Broderick, G. A. (1981). Journal of Animal Science 51, 422– 31.CrossRefGoogle Scholar
Lowrey, R. S. (1970). Proceedings of the National Conference on Forage Quality Evaluation and Utilization, p. 12. Lincoln: University of Nebraska.Google Scholar
MacRae, J. C. & Armstrong, D. G. (1968). Journal of the Science of Food and Agriculture 19, 578–581.CrossRefGoogle Scholar
Mehrez, A. Z., Ørskov, E. R. & McDonald, I. (1977). British Journal of Nutrition 38, 437–443.CrossRefGoogle Scholar
Meyer, J. H. F. & Mackie, R. I. (1986). Applied and Environmental Microbiology 51, 622–629.CrossRefGoogle Scholar
Meyer, R. M., Bartley, E. E., Morrill, J. L. & Stewart, W. E. (1964). Journal of Dairy Science 47, 1339–1345.CrossRefGoogle Scholar
Neter, J. & Wasserman, W. (1974). Applied Linear Statistical Models. Homewood, Illinois: Ricchard D. Irwin Inc.Google Scholar
Nikolic, J. A., Jovanovic, M. & Filipovic, R. (1975). In Tracer Studies on Non-Protein Nitrogen for Ruminants vol. 2, pp. 43–54. Vienna: International Atomic Energy Agency.Google Scholar
ørskov, E. R. (1982). Protein Nutrition in Ruminants, p. 31. New York: Academic Press.Google Scholar
Ortega, M. E., Stern, M. D. & Satter, L. D. (1979). Journal of Dairy Science 62, 76.Google Scholar
Owens, F. N. & Bergen, W. G. (1983). Journal of Animal Science 57, 498–518.Google Scholar
Pisulewski, P. M., Okorie, A. U., Buttery, P. J., Haresign, W. & Lewis, D. (1981). Journal of the Science of Food and Agriculture 32, 759–766.CrossRefGoogle Scholar
Ricke, S. C. & Schaefer, D. M. (1984). Journal of Animal Science 59, Suppl. 1, 408.Google Scholar
SAS Institute (1982). SAS User's Guide: Statistics. Cary, North Carolina: SAS Institute Inc.Google Scholar
Satter, L. D. & Slyter, L. L. (1974). British Journal of Nutrition 32, 199–208.CrossRefGoogle Scholar
Schaefer, D. M., Davis, C. L. & Bryant, M. P. (1980). Journal of Dairy Science 63, 1248–1263.CrossRefGoogle Scholar
Slyter, L. L., Satter, L. D. & Dinius, D. A. (1979). Journal of Animal Science 48, 906–912.CrossRefGoogle Scholar
Steel, R. D. G. & Torrie, J. H. (1980). In Principles and Procedures of Statistics, pp. 187–188 [Napier, C. and Maisel, J. W., editors]. New York: McGraw-Hill.Google Scholar
Supelco (1975). GC Separation of VFA C2-C5. Bulletin 749E. Bellefonte, Pennsylvania: Supelco Inc.Google Scholar
Uden, P. & Van Soest, P. J. (1984). Journal of Animal Science 58, 213– 221.CrossRefGoogle Scholar
Van soest, P. J. (1982). Nutritional Ecology of the Ruminant. Oregon: O & B Books Inc.Google Scholar
Waldo, D. R. (1973). Journal of Animal Science 31, 1062–1074.CrossRefGoogle Scholar
Wallace, R. J. (1979). Journal of Applied Bacteriology 47, 443–445.CrossRefGoogle Scholar
Wohlt, J. E., Clark, J. H. & Blaisdell, F. S. (1976). Journal of Dairy Science 59, 459–464.CrossRefGoogle Scholar