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A note on the utilization of urea by Sudan desert sheep

Published online by Cambridge University Press:  02 September 2010

H. M. Hassan  and
A. M. S. Mukhtar
H. M. Hassan
Affiliation:
Department of Animal Husbandry, University of Khartoum, Sudan
A. M. S. Mukhtar
Affiliation:
Department of Animal Husbandry, University of Khartoum, Sudan
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Summary

Sixty-four young male Sudan desert lambs were group-fed for 87 days on four diets, all containing approximately 10% crude protein. The four diets contained 0, 1·3, 1·7 and 2·7% urea, respectively.

Average daily gains were 0·15, 0·14, 0·14 and 0·13 kg; feed conversion ratios (kg of feed required to produce 1 kg live-weight gain) were 7·26, 8·14, 8·92 and 7·92; dressing percentages were 43·6, 42·1, 44·1 and 42·3.

Digestibility trials with lambs fed on diets with 0 or 2·7% urea gave higher digestibility coefficients for crude fibre and nitrogen-free extract for the urea-supplemented lambs. Crude protein digestibility and nitrogen retention values were lower for urea-supplemented lambs.

Type
Research Article
Information
Animal Production , Volume 13 , Issue 1 , February 1971 , pp. 201 - 204
Copyright
Copyright © British Society of Animal Science 1971

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References

REFERENCES

Anderson, G. C., McLaren, G. A., Welch, J. A., Campbell, C. D. and Smith, G. S. 1959. Comparative effects of urea, uramite, biuret, soya bean protein and creatine on digestion and nitrogen metabolism in lambs. J. Anim. Sci. 18: 134–140.CrossRefGoogle Scholar
Association of Official Agricultural Chemists. 1960. Methods of Analysis. 9th ed.Association of Official Agricultural Chemists, Washington, D.C.Google Scholar
Bell, M. C., Taylor, J. R., Murphree, R. L. and Hobbs, C. S. 1955. The effects of feeding urea and stilbestrol on ration digestibility and on calcium, phosphorus and nitrogen retention in lambs. J. Anim. Sci. 14: 1193–1194 (Abstr.).Google Scholar
Hawke, P. B., Oser, B. L. and Summerson, W. H. 1954. Practical Physiological Chemistry. J. and A. Churchill Ltd., London.Google Scholar
Kammlade, W. G., Mitchell, H. H. and Bull, S. 1940. Urea as a source of protein for sheep. Univ. III. Coll. Agric. Anim. Hush. Dept., Sheep Div. Project, No. 1123.Google Scholar
Karr, M. R., Garrious, U. S., Hatfield, E. E. and Norton, H. W. 1965. Factors affecting the utilization of nitrogen from different sources by lambs. J. Anim. Sci. 24: 459–468.CrossRefGoogle ScholarPubMed
Khalifa, H. A. and Prebicevic, S. 1968. The seasonal changes in chemical composition and nutritive value of pasture around Abu Deleig. Sudan J. vet. Sci. Anim. Husb. 8: 30–35.Google Scholar
Topps, J. H. 1963. Some observations on protein requirements of African native sheep. Trop. Agric., Trin. 40: 49–54.Google Scholar