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Rumen degradation of straw 2. Botanical fractions of straw from two barley cultivars

Published online by Cambridge University Press:  02 September 2010

M. Ramanzin ,
E. R. Ørskov  and
A. K. Tuah
M. Ramanzin
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. R. Ørskov
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
A. K. Tuah
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

Two varieties of barley straw, Corgi and Gerbel, which varied in degradability when incubated in the rumen in nylon bags, were chosen for further examination of botanical fractions and to see how each fraction responded to treatment with ammonia. The straws were separated into leaves, internodes, nodes and chaff. The average proportions of these fractions were respectively 0·499, 0·380, 0·055 and 0·065 in Corgi straw and 0·404, 0·512, 0·059 and 0·025 in Gerbel straw. For both varieties the degradability of the botanical fractions were leaves > chaff > nodes > internodes.

Despite a similar chemical composition, the dry-matter loss (DML) values of leaves, internodes and nodes of Corgi were higher than those of Gerbel straw.

The differences between varieties were larger for internodes and nodes than for leaves. The difference in DML of the two varieties at 48-h incubation was 132 g/kg DM. Of this difference, 25 g were due to differences in distribution of the botanical fractions and 107 g to differences in DML of the fractions.

Ammonia treatment significantly increased the DML of all fractions except the nodes. The overall improvement due to ammonia treatment of the different fraction was internode > chaff > leaves > nodes.

Type
Research Article
Information
Animal Production , Volume 43 , Issue 2 , October 1986 , pp. 271 - 278
Copyright
Copyright © British Society of Animal Science 1986

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References

REFERENCES

Åman, P. and Nordkvist, E. 1983. Chemical composition and in vitro degradability of botanical fractions of cereal straw. Swedish Journal of Agricultural Research 13: 61–67.Google Scholar
Association of Official Analytical Chemists. 1975. Official Methods of Analysis of the Association of Official Analytical Chemists. 12th edition. Association of Official Analytical Chemists, Washington, DC.Google Scholar
Capper, B. S., Mekni, M., Rihawi, S., Thomson, E. F. and Jenkins, G. 1985. Observations on barley straw quality. Animal Production 40: 569 (Abstr.).Google Scholar
Davidson, J., Mathieson, J. and Boyne, A. W. 1970. The use of automation in determining nitrogen by the Kjeldahl method, with final calculations by computer. The Analyst, London 95: 181–193.CrossRefGoogle ScholarPubMed
Erickson, D. O., Meyer, D. W. and Foster, A. E. 1982. The effect of genotypes on the feed value of barley straws. Journal of Animal Science 55: 1015–1026.CrossRefGoogle Scholar
Harper, S. H. T. and Lynch, J. M. 1981. The chemical components and decomposition of wheat straw leaves, internodes and nodes. Journal of the Science of Food and Agriculture 32: 1057–1062.CrossRefGoogle Scholar
Hartley, R. D., Deschard, G., Keene, A. S. and Mason, V. C. 1984. Changes in the chemical constitution of cereal straw and poor quality hay during upgrading. In Improvements in the Nutritive Value of Crops and By-products by Chemical or Biological Treatments. Proceedings of a second seminar on the Upgrading of Crops and By-products, Hurley, pp. 11–14. Ministry of Agriculture, Fisheries and Food, London.Google Scholar
Kernan, J. A., Coxworth, E. C., Crowle, W. L. and Spurr, D. T. 1984. The nutritional value of crop residue components from several wheat cultivars grown at different fertilizer levels. Animal Feed Science and Technology 11: 301–311.CrossRefGoogle Scholar
Kernan, J. A., Crowle, W. L., Spurr, D. T. and Coxworth, E. C. 1979. Straw quality of cereal cultivars before and after treatment with anhydrous ammonia. Canadian Journal of Animal Science 59: 511–517.CrossRefGoogle Scholar
Lufadeju, E. A., Blacket, G. A. and Ørskov, E. R. 1985. The effect of variety of spring barley straw and of ammonia treatment on nutritive value. Proceedings of the Nutrition Society 44: 97A (Abstr.).Google Scholar
Ørskov, E. R., Hovell, F. D. Deb. and Mould, F. 1980. The use of the nylon bag technique for the evaluation of feedstuffs. Tropical Animal Production 5: 195–213.Google Scholar
Ørskov, E. R. and McDonald, I. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science, Cambridge 92: 499–503.CrossRefGoogle Scholar
Pearce, G. R., Beard, J. and Hilliard, E. P. 1979. Variability in the chemical composition of cereal straws and in vitro digestibility with and without sodium hydroxide treatment. Australian Journal of Experimental Agriculture and Animal Husbandry 19: 350–353.CrossRefGoogle Scholar
Snedecor, G. W. and Cochran, W. G. 1967. Statistical Methods. 6th ed.Iowa State University Press, Ames, la.Google Scholar
Thiago, L. R. L. De S. and Kellaway, R. C. 1982. Botanical composition and extent of lignification affecting digestibility of wheat and oat straw and paspalum hay. Animal Feed Science and Technology 7: 71–81.CrossRefGoogle Scholar
Tuah, A. K., Lufadeju, E., Ørskov, E. R. and Blackett, G. A. 1986. Rumen degradation of straw. 1. Untreated and ammonia-treated barley oat and wheat straw varieties and triticale straw Animal Production 43: 261–269.Google Scholar
Van Soest, P. J. 1963. Use of detergents in the analysis of fibrous feeds. II. A rapid method for the determination of fiber and lignin. Journal of the Association of Official Agricultural Chemists 46: 829–835.Google Scholar
Van Soest, P. J. and Wine, R. H. 1967. Use of detergents in the analysis of fibrous feeds. IV. Determination of plant cell-wall constituents. Journal of the Association of Official Analytical Chemists 50: 50–55.Google Scholar
White, L. M., Hartman, G. P. and Bergman, J. W. 1981. In vitro digestibility, crude protein and phosphorus content of straw of winter wheat, spring wheat, barley and oat cultivars in Eastern Montana. Agronomy Journal 73: 117–121.CrossRefGoogle Scholar