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Efficiency of use of nitrogen from dried microbial cells after a period of N deprivation in growing pigs

Published online by Cambridge University Press:  24 July 2007

C. T. Whittemore ,
J. Bronwyn Tullis  and
Sandra W. Hastie
C. T. Whittemore
Affiliation:
Department of Agriculture, University of Edinburgh, West Mains Road, Edinburgh EH9 3JG
J. Bronwyn Tullis
Affiliation:
Department of Agriculture, University of Edinburgh, West Mains Road, Edinburgh EH9 3JG
Sandra W. Hastie
Affiliation:
Department of Agriculture, University of Edinburgh, West Mains Road, Edinburgh EH9 3JG
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Abstract

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1. Semi-synthetic diets, with dried microbial cells (Pruteen) as the nitrogen source, were used to measure N retention in 50 kg pigs which had been given only sufficient N (5.3 g/d) to maintain N equilibrium for the previous 12 d. Control pigs were given 33.2 g N/d.

2. Metabolic faecal N losses were 1.62 g/d (1.2 g/kg dry matter eaten) and endogenous urinary losses were 3.90 g/d.

3. Realimentation of N-deprived pigs was achieved with diets providing 20.0, 33.2 and 67.4 g N/d and daily rates for N retention were 11.2, 17.8 and 25.9 g respectively; the corresponding value for control pigs was 15.0 g. ‘Catch-up’ protein growth was demonstrated in pigs given both 33.2 and 67.4 g N/d. In the former instance, this was associated with an increase in the efficiency of utilization of dietary N.

4. The biological value of the protein in Pruteen was 0.85, and it appeared that under conditions of increased demand for N the pig could utilize some of the nucleic acid-N fraction of this protein source.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 39 , Issue 1 , January 1978 , pp. 193 - 200
Copyright
Copyright © The Nutrition Society 1978

References

Allden, W. G. (1970). Nutr. Abstr. Rev. 40, 1167.Google Scholar
Armstrong, D. G. & Mitchell, H. H. (1955). J. Anim. Sci. 14, 49.Google Scholar
Das, T. K. & Waterlow, J. C. (1974). Br. J. Nutr. 32, 353.Google Scholar
D'Mello, J. P. F., Peers, D. G. & Whittemore, C. T. (1976). Br. J. Nutr. 36, 403.Google Scholar
Fowler, V. R. (1976). In Meat Animals Growth and Productivity, p. 285 [Lister, D., Rhodes, D. N., Fowler, V. R and Fuller, M. F., editors]. London: Plenum Press.CrossRefGoogle Scholar
ICI, Ltd (1976). Pruteen – a New Protein Source. Billingham, Cleveland: ICI Ltd (Agricultural Division).Google Scholar
Kielanowski, J. (1969). Rev. cub. Cienc. Agric. 3, 207.Google Scholar
Laksesvela, B. (1976). Anim. Fd Sci. Technol. 1, 619.Google Scholar
Lubaszewska, S., Pastuszewska, B. & Kielanowski, J. (1973). Z. Tierphysiol. Tierernähr. Futtermittelk. 31, 120.Google Scholar
Millward, D. J., Garlick, P. J., James, W. P. T., Sender, P. & Waterlow, J. C. (1976). In Protein Metabolism and Nutrition, p. 49 [Cole, D. J. A., Boorman, K. N., Buttery, P. J., Lewis, D., Neale, R. J. and Swan, H., editors]. London: Butterworths.Google Scholar
Millward, D. J., Garlick, P. J. & Nnanyelugo, D. O. (1974). Proc. Nutr. Soc. 34, 33 A.Google Scholar
Neilsen, H. E. (1976). Beretn. St. Husdyrbrugsforsøg, København. 433.Google Scholar
Schulz, E. & Oslage, H. J. (1976). Anim. Fd Sci. Technol. 1, 9.Google Scholar
Whiting, F. & Bezeau, L. M. (1957). Can. J. Anim. Sci. 37, 95.Google Scholar