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The digestion of spring and autumn harvested perennial ryegrass by sheep

Published online by Cambridge University Press:  27 March 2009

D. E. Beever ,
R. A. Terry ,
S. B. Cammell  and
Annie S. Wallace
D. E. Beever
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berkshire
R. A. Terry
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berkshire
S. B. Cammell
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berkshire
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Summary

S. 24 perennial ryegrass harvested in June, and subsequently in September from the same sward was conserved by rapid freezing. The digestion of the carbohydrate and protein components of the two diets was investigated, using sheep fitted with re-entrant cannulae at the proximal duodenum and terminal ileum and consuming daily 950 g of herbage dry matter.

The higher content of soluble carbohydrate and the lower content of protein in the spring-cut herbage compared with the autumn cut, led to a more efficient fermentation in the rumen with a higher yield of volatile fatty acids per mole of substrate degraded, a proportionately higher yield of propionic acid and a substantially greater net gain of protein between mouth and duodenum on the spring cut herbage. Consequently, the quantity and composition of the amino acids entering the small intestine, or being absorbed therein, were not significantly different, despite the higher protein content noted on the autumn herbage.

The total energy absorbed was markedly higher for the spring herbage (11·2 MJ/kg D.M.) compared with the autumn herbage (9·5) and the energy absorbed as protein from the two diets comprised 20 and 26% of total energy absorbed respectively.

The possible causal mechanisms within the rumen, and the subsequent effect of these on nutrient supply are discussed in relation to the well-established higher efficiency of use of metabolizable energy (ME) of spring-cut herbage compared with autumn cut herbage of similar apparent energy digestibility.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 90 , Issue 3 , June 1978 , pp. 463 - 470
Copyright
Copyright © Cambridge University Press 1978

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References

Baldwin, R. L., Lucas, H. L. & Cabrera, R. (1970). Energetic relationships in the formation and utilisation of fermentation end products. In Physiology of Digestion and Metabolism in the Ruminant (ed. Phillipson, A. T.), pp. 313–34. Newcastle-upon-Tyne: Oriel.Google Scholar
Beever, D. E., Coehlo da Silva, J. F., Prescott, J. H. D. & Armstrong, D. G. (1972). The effect in sheep of physical form and stage of growth on the sites of digestion of a dried grass. I. Sites of digestion of organic matter, energy and carbohydrate. British Journal of Nutrition 28, 347–56.CrossRefGoogle Scholar
Beever, D. E., Harrison, D. G., Thomson, D. J., Cammell, S. B. & Osbourn, D. F. (1974). A method for the estimation of dietary and microbial protein in duodenal digesta of ruminants. British Journal of Nutrition 32, 99–112.CrossRefGoogle ScholarPubMed
Beever, D. E., Thomson, D. J. & Cammell, S. B. (1976). The digestion of frozen and dried grass by sheep. Journal of Agricultural Science, Cambridge 86, 443–52.CrossRefGoogle Scholar
Beever, D. E., Thomson, D. J., Cammell, S. B. & Harrison, D. G. (1977). The digestion by sheep of silages made with and without the addition of formaldehyde. Journal of Agricultural Science, Cambridge 88, 61–70.CrossRefGoogle Scholar
Beever, D. E., Thomson, D. J., Pfeffer, E. & Armstrong, D. G. (1971). The effect of drying and ensiling grass on its digestion in sheep. British Journal of Nutrition 26, 123–34.CrossRefGoogle ScholarPubMed
Blaxter, K. L., Wainman, F. W., Dewey, P. J. S., Davidson, J., Denerly, H. & Gunn, J. B. (1971). The effects of nitrogenous fertilizer on the nutritive value of artificially dried grass. Journal of Agricultural Science, Cambridge 76, 307–19.CrossRefGoogle Scholar
Brown, G. F., Armstrong, D. G. & MacRae, J. C. (1968). The establishment in one operation of a cannula into the rumen and re-entrant cannulae into the duodenum and ileum of sheep. British Veterinary Journal 124, 78–82.CrossRefGoogle Scholar
Canaway, R. J. & Thomson, D. J. (1977). Automatic sampling equipment for digestion studies with sheep. Grassland Research Institute, Technical Report, no. 23.Google Scholar
Christian, K. R. & Coup, M. R. (1954). Measurement of feed intake by grazing cattle and sheep. VI. The determination of chromic oxide in faeces. New Zealand Journal of Science and Technology A 36, 328–30.Google Scholar
Corbett, J. L., Greenhalgh, J. F. D., McDonald, I. & Florence, E. (1960). Excretion of chromium sesquioxide administered as a component of paper to sheep. British Journal of Nutrition 14, 289–99.CrossRefGoogle Scholar
Corbett, J. L., Langlands, J. P., McDonald, I. & Pullar, J. D. (1966). Comparison by direct animal calorimetry of the net energy values of an early and a late season growth of herbage. Animal Production 8, 13–27.Google Scholar
Egan, A. R. & Walker, D. J. (1975). Resource allocation and ruminant protein production. In Proceedings of the Third World Conference on Animal Production (ed. Reid, R. L.), pp. 551–62. Sydney University Press.Google Scholar
Harrison, D. G., Beever, D. E., Thomson, D. J. & Osbourn, D. F. (1973). The influence of diet upon the quantity and types of amino acid entering and leaving the small intestine of sheep. Journal of Agricultural Science, Cambridge 81, 391–401.CrossRefGoogle Scholar
Lonsdale, C. R. & Tayler, J. C. (1971). The effect of season of harvest and of milling on the nutritive value of dried grass. Animal Production 13, 384.Google Scholar
MacRae, J. C. (1975). The use of re-entrant cannulae to partition digestive function within the gastro-intestinal tract of ruminants. In Digestion and Metabolism in the Ruminant (ed. McDonald, I. W. and Warner, A.C.I.), pp. 261–76. Armidale NSW: University of New England.Google Scholar
MacRae, J. C. & Armstrong, D. G. (1969). Studies on intestinal digestion in the sheep. I. The use of chromic oxide as an indigestible marker. British Journal of Nutrition 23, 15–23.CrossRefGoogle ScholarPubMed
Minson, D. J. (1966). Diurnal variations in the excretion of faeces and urine by sheep fed only daily or at hourly intervals. British Journal of Nutrition 20, 757–64.CrossRefGoogle ScholarPubMed
Moore, S. (1963). On the determination of cystine as cysteic acid. Journal of Biological Chemistry 238, 235–7.CrossRefGoogle Scholar
National Institute of Agricultural Engineers (1953). Report no. 33.Google Scholar
Reichl, J. R. & Baldwin, R. L. (1975). Rumen modelling: Rumen input-output balance models. Journal of Dairy Science 58 (6), 879–90.CrossRefGoogle ScholarPubMed
Thomas, P. C. & Clapperton, J. L. (1972). Significance to the host of changes in fermentative activity. Proceedings of the Nutrition Society 31, 165–70.CrossRefGoogle Scholar
Thomson, D. J., Beever, D. E., Coehlo da Silva, J. F. & Armstrong, D. G. (1972). The effect of physical form on the sites of digestion of a dried lucerne diet. I. Sites of organic matter, energy and carbohydrate digestion. British Journal of Nutrition 28, 31–41.CrossRefGoogle ScholarPubMed
Van Soest, P. J. & Wine, R. H. (1967). Use of detergents in the analysis of fibrous feeds in determination of plant cell wall constituents. Journal of the Associates of Official Analytical Chemists 50, 50–3.Google Scholar
Weller, R. A., Gray, F. V., Pilgrim, A. F. & Jones, G. B. (1967). The rates of production of volatile fatty acids in the rumen. Australian Journal of Agricultural Research, 13, 107–18.CrossRefGoogle Scholar