Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T02:22:41.519Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of nitrogen source on the in vitro cellulose digestion of chemically treated oat straw and poplar wood

Published online by Cambridge University Press:  27 March 2009

I. O. A. Adeleye  and
W. D. Kitts
I. O. A. Adeleye
Affiliation:
Department of Animal Science, University of British Columbia, Vancouver 8, B.C., Canada
W. D. Kitts
Affiliation:
Department of Animal Science, University of British Columbia, Vancouver 8, B.C., Canada
Get access Rights & Permissions [Opens in a new window]

Extract

The gross energy of forages can be classified into three fractions, namely the unavailable fraction, the digestible energy fraction and the potentially digestible energy (PDE) fraction. The PDE fraction can only be made available by appropriate treatment and supplementation (Pigden & Heaney, 1969). In young forages the PDE fraction is relatively insignificant, but as the plant matures, the PDE fraction increases very rapidly. By treating matured forages with delignifying agents, increased nutrient digestibilities have been demonstrated Chandra & Jackson, 1971; Wilson & Pigden, 1964), but no significant improvement on the voluntary intake was achieved unless the treated material was supplemented with a source of nitrogen (Donefer, Adeleye & Jones, 1969). While Zafren (1960) used ammonium hydroxide (NH40H) as the treatment alkali, with the claim that the ammonium acetate resulting from the neutralization of the excess alkali could serve as an extra source of nitrogen in the treated straw, other investigators (Donefer et al. 1969) have adopted the method of supplementing the treated straw with a source of nitrogen. Since the efficiency with which dietary nitrogen is converted to microbial nitrogen in the rumen has a considerable influence on the efficiency the animal as a whole, studies herein reported were carried out to test the effectiveness with which rumen micro-organisms utilize different nitrogen sources in degrading cellulose in vitro.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 82 , Issue 3 , June 1974 , pp. 571 - 573
Copyright
Copyright © Cambridge University Press 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Chandra, S. & Jackson, M. G. (1971). A study of various chemical treatments to remove lignin from coarse roughages and increase their digestibility. Journal of Agricultural Science, Cambridge 77, 11–17,Google Scholar
Champton, E. W. & Maynard, L. A. (1938). The relation of cellulose and lignin content to the nutritive value of animal feeds. Journal of Nutrition 15, 383–95.CrossRefGoogle Scholar
Donefer, E., Adeleye, I. O. A. & Jones, T. A. O. C. (1969). Effect of urea supplementation on the nutritivo value of NaOH-treated oat straw. Advances in Chemistry Series 95, 328–42.Google Scholar
Donefer, E., Crampton, E. W. & Lloyd, L. E. (1960). Prediction of the Nutritive Value Index of a forage from in vitro rumen fermentation data. Journal of Animal Science 19, 545–52.CrossRefGoogle Scholar
Huffman, J. G. (1970). The effects of various physical and chemical treatments on the in vitro rumen digestibility and chemical composition of four woods. M.Sc. Thesis, University of British Columbia, CanadaGoogle Scholar
Pigden, W. J. & Heaney, D. P. (1969). Lignocellulose in ruminant nutrition. Advances in Chemistry Series 95, 245–61.CrossRefGoogle Scholar
Wilson, R. K.Pigden, W. J. (1964). Effect of sodium hydroxide treatment on the utilization of wheat straw and poplar wood by rumen microorganisms. Canadian Journal of Animal Science 44, 122–23.Google Scholar
Zafren, S. Ja. (1960). Increasing the nutritive value of straw and at the same time adding digestible nitrogen. Nutrition Abstracts and Reviews 30, 252.Google Scholar