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A note on the substitution of protein by non-protein nitrogen in beef rations

Published online by Cambridge University Press:  02 September 2010

D. W. Pickard
Affiliation:
University of Nottingham, School of Agriculture, Sutton Bonington, Loughborough
G. E. Lamming
Affiliation:
University of Nottingham, School of Agriculture, Sutton Bonington, Loughborough
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Extract

Many observations have been made on the metabolic effects of urea (see reviews by Reid, 1953; McLaren, 1964) and on the problem of urea poisoning (Repp, Hale and Burroughs, 1955), but little information is available on the use of urea for fattening beef cattle under conventional intensive systems. There has been considerable interest shown in the use of biuret as a source of non-protein nitrogen (NPN) as it has been found to be less poisonous than urea when consumed in large quantities (Berry, Riggs and Kunkel, 1956).

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1968

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References

REFERENCES

Agricultural Research Council 1965. The Nutrient Requirements of Farm Livestock. No. 2—Ruminants. Technical Reviews and Summaries. H.M.S.O. London.Google Scholar
Berry, W. T. J., Riggs, J. K. and Kunkel, H. C. 1956. The lack of toxicity of biuret to animals. J. Anim. Sci. 15: 225233.CrossRefGoogle Scholar
Hatfield, E. E., Garrigus, U. S., Forbes, R. M., Neumann, A. L. and Gaither, W. 1959. Biuret—a source of NPN for ruminants. J. Anim. Sci. 18: 12081219.CrossRefGoogle Scholar
Lamming, G. E., Swan, H. and Clarke, R. T. 1966. Studies on the nutrition of ruminants. I. Substitution of maize by milled barley straw in a beef fattening diet and its effect on performance and carcass quality. Anim. Prod. 8: 303311.Google Scholar
McLaren, G. A. 1964. Symposium on microbial digestion in ruminants. Nitrogen metabolism in the rumen. J. Anim. Sci. 23: 577590.CrossRefGoogle Scholar
Reid, J. T. 1953. Urea as a protein replacement for ruminants: A review. J. Dairy Sci. 36: 955996.CrossRefGoogle Scholar
Repp, W. W., Hale, W. H. and Burroughs, W. 1955. The value of several non-protein nitrogen compounds as protein substitutes in lamb fattening rations. J. Anim. Sci. 14: 901908.CrossRefGoogle Scholar
Schaadt, H. J., Johnson, R. R. and McClure, K. E. 1966. Adaptation to and palatability of urea, biuret and diammonium phosphate as NPN sources for ruminants. J. Anim. Sci. 25: 7377.CrossRefGoogle ScholarPubMed