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Fermentation in the rumen of cows given rations containing hay and flaked maize or rolled barley in widely different proportions

Published online by Cambridge University Press:  27 March 2009

J. D. Sutton  and
V. W. Johnson
J. D. Sutton
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, Berks
V. W. Johnson
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, Berks
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Summary

Three dry cows, each fitted with a permanent rumen fistula, were fed hay and flaked maize or hay and rolled barley in widely different proportions. All rations were offered at 7 kg dry matter daily for 3 weeks following hay alone. The cows refused all cereal 3 or 4 days after introduction of rations including 80 and 100% flaked maize; recovery of intake occurred in most instances within a further 3–10 days. On the 100% flaked maize ration, the refusals were associated with very low pH and high concentrations of lactic acid in the rumen.Refusalsof rolled barley were small and showed no clear pattern.

Rumen fermentation was reasonably stable during the last week of each period except with the 100% barley rations. On the rations containing flaked maize, molar proportions of volatile fatty acids (VFA) varied widely but on only one occasion did the proportion of acetic acid fall below 55% and in two cows that consumed flaked maize alone, the proportion of acetic acid in the rumen exceeded 60%. On the rations containing rolled barley, increasing proportions of barley were associated with large decreases in the proportion of acetic acid and increases in the proportion of propionic acid. The maximum proportion of n-butyric acid was found on the rations containing 50% cereal.

It is suggested that, when large proportions of cereals are fed, the proportions of VFA bear no clear relationship to the crude fibre content of the ration but that an association with rumen pH may exist.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 73 , Issue 3 , December 1969 , pp. 459 - 468
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Armstrong, D. G. (1968). The amount and physical form of feed and milk secretion in the cow. Proc. Nutr. Soc. 27, 57–65.CrossRefGoogle ScholarPubMed
Balch, D. A. & Rowland, S. J. (1957). Volatile fatty acids and lactic acid in the rumen of dairy cows receiving a variety of diets. Br. J. Nutr. 11, 288–98.CrossRefGoogle ScholarPubMed
Bath, I. H. & Rook, J. A. F.. (1963). The evaluation of cattle foods and diets in terms of the ruminal concentration of volatile fatty acids. I. The effects of level of intake, frequency of feeding, the ratio of hay to concentrates in the diet, and of supplementary foods. J. agric. Sci., Camb. 61, 341–8.CrossRefGoogle Scholar
Bath, I. H. & Rook, J. A. F. (1965). The evaluation of cattle foods and diets in terms of the ruminal concentration of volatile fatty acids. II. Roughages and succulents. J. agric. Sci., Camb. 64, 67–75.CrossRefGoogle Scholar
Blaxter, K. L. & Wainman, F. W. (1964). The utilisation of the energy of different rations by sheep and cattle for maintenance and for fattening. J. agric. Sci., Camb. 63, 113–28.CrossRefGoogle Scholar
Eadie, J. M., Hobson, P. N. & Mann, S. O. (1967). A note on some comparisons between the rumen content of barley-fed steers and that of young calves also fed on a high concentrate ration. Anim. Prod. 9, 247–50.Google Scholar
Elsden, S. R. & Gibson, Q. H. (1954). The estimation of lactic acid using eerie sulphate. Biochem. J. 58, 154–8.Google Scholar
Ghorban, K. Z.Knox, K. L. & Ward, G. M. (1966). Concentrations of volatile fatty acids and lactic acid in the rumen as influenced by diet and postfeeding time. J. Dairy Sci. 49, 1515–8.CrossRefGoogle Scholar
Hodson, H. H., Mcgilliard, A. D., Jacobson, N. L. & Allen, R. S. (1965). Metabolic role of rumen mucosa in absorption of butyrate. J. Dairy Sci. 48, 1652–6.Google Scholar
Hungate, R. E. (1966). The Rumen and its Microbes p. 454. London: Academic Press.Google Scholar
Johnson, V. W. & Sutton, J. D. (1968). The continuous recording of the pH in the bovine rumen. Br. J. Nutr. 22, 303–6.CrossRefGoogle Scholar
Kaufmann, W. & Rohr, K. (1966). Ergebnisse gaschromatographischer Bestimmung der flüchtigen Fettsäuren im Pansen bei unterschiedlicher Fütterung. Z. Tierphysiol. Tierernahr. Futtermittelk. 22, 1–8.Google Scholar
Lampila, M. (1967). The composition and caloric value of the volatile fatty acid mixture of the bovine rumen fluid on five diets. Suom. maatal. Seur. Julk. 109, 121–35.Google Scholar
McCullough, M. E. & Smart, W. W. G. (1968). Influence of feeding schedule, type of forage, and ratio of flaked corn to forage on rumen fermentation. J. Dairy Sci. 51, 385–91.Google Scholar
Newland, H. W., Magee, W. T., Branaman, G. A. & Blakeslee, L. H. (1962). Effect of heat-processing and pelleting corn for steers and lambs. J. Anim. Sci. 21, 711–15.CrossRefGoogle Scholar
ørskov, E. R., Hemken, R. W. & Moore, L. A. (1967). Effect of ethanol infusion on milk fat content and composition and on volatile fatty acids in the rumen liquor. J. Dairy Sci. 50, 692–5.CrossRefGoogle ScholarPubMed
Reid, R. L., Hogan, J. P. & Briggs, P. K. (1957). The effect of diet on individual volatile fatty acids in the rumen of sheep, with particular reference to the effect of low rumen pH and adaptation on high-starch diets. Aust. J. agric. Res. 8, 691–710.Google Scholar
Shaw, J. C. (1962). Nutritional physiology of the rumen. Proc. 8th int. Congr. Anim. Prod. Hamburg. General Report IIa, 29–56.Google Scholar
Thompson, J. T., Bradley, N. W. & Little, C. O. (1965). Ruminal volatile fatty acid concentrations and performance of steers fed different levels and forms of hay and grain. J. Anim. Sci. 24, 1179–83.CrossRefGoogle Scholar
Woods, W. & Luther, R. (1962). Further observations on the effect of physical preparation of the ration on volatile fatty acid production. J. Anim. Sci. 21, 809–14.CrossRefGoogle Scholar
Youssep, F. G. (1968). A study of rumen fermentation in the sheep. Ph.D. Thesis, University of Reading.Google Scholar