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Upgrading wheat straw with urea at a tropical temperature: effects of amount of urea and moisture on in vitro digestibility and pH

Published online by Cambridge University Press:  05 November 2021

I.U. Haq  and
E. Owen
I.U. Haq
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
E. Owen
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
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Extract

Urea-ammonia treatment of straws in the tropics involves mixing 1.0 kg of air dry straw with 1.0 kg of a 40 g/kg urea solution and storing under plastic for at least 4 weeks (Schiere and Ibrahim, 1989). The economics of treatment is dependent on the cost of urea. Treatment cost would reduce, if on-farm-produced urine, e.g. cow urine, could be used as a source of urea. However cow urine is dilute and may contain only 10 g/kg urea or less (Owen, 1993). The present study therefore investigated varying concentrations of urea solution for treating wheat straw at a tropical temperature.

Type
Techniques
Information
Proceedings of the British Society of Animal Science , Volume 1996 , March 1996 , pp. 212
Copyright
Copyright © The British Society of Animal Science 1996

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References

Owen, E. 1993. The chemical composition of human and animal urine. In Urine - a wasted, renewable natural resource (ed. Sundstol, F. and Owen, E.) pp 3–10. NORAGRIC, Agricultural University of Norway, As. Google Scholar
Schiere, J.B. and Ibrahim, M.N.M. 1989. Feeding of urea-ammonia treated rice straw. A compilation of miscellaneous reports produced by the Straw Utilization Project (Sri Lanka). Pudoc Wageningen.Google Scholar
Tilley, J.M.A. and Terry, R.A. 1963. A two-stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society 18:104–111.10.1111/j.1365-2494.1963.tb00335.xCrossRefGoogle Scholar