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Effects of fodder beet on rumen metabolism

Published online by Cambridge University Press:  02 September 2010

M. S. Sabri ,
N. W. Offer  and
D. J. Roberts
M. S. Sabri
Affiliation:
West of Scotland Agricultural College, Auchincruive, Ayr KA6 5HW
N. W. Offer
Affiliation:
West of Scotland Agricultural College, Auchincruive, Ayr KA6 5HW
D. J. Roberts
Affiliation:
West of Scotland Agricultural College, Auchincruive, Ayr KA6 5HW
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Abstract

Two experiments were carried out with sheep, to characterize fodder beet in terms of its effects on rumen function. In experiment A, a study was made of the effects of supplementing hay with fodder beet (FB) on rumen pH and volatile fatty acid (VFA) concentration compared with two control supplements of either barley/maize (BM) or molassed sugar-beet shreds (SBP). Hay was offered with all three supplements in a 50: 50 ratio on a dry matter (DM) basis. The mean rumen pH for the fodder beet diet was 6·34 and intermediate between two controls (BM 6·20 and SBP 6·38). There was no significant difference in rumen concentration of total VFA for the three different diets (FB, SBP and BM) but there were highly significant effects due to diet for acetic and propionic acid molar proportions (P < 0·001). Molar proportion of propionic acid for diets FB, BM and SBP were 0·2064, 0·2221 and 01880 respectively. The loss of DM from nylon bags incubated in the rumen of sheep given the test diets was 471, 447 and 486 g/kg for FB, BM and SBP respectively. In experiment B, the rate of in sacco organic matter (OM) disappearance of the three supplements were compared in sheep given a constant high forage diet (900 g/day hay DM + 200 g/day compound food DM). There were highly significant differences in rates of OM disappearances for the supplements (P < 0·001). The losses of OM measured after 3 h incubation in the rumen were 767, 608, 378 and 236 g/kg for fodder beet, barley/maize, molassed sugar-beet shreds and hay respectively.

Type
Research Article
Information
Animal Production , Volume 47 , Issue 3 , December 1988 , pp. 429 - 434
Copyright
Copyright © British Society of Animal Science 1988

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References

REFERENCES

Alexander, R. H. and McGowan, M. 1966. The routine determination of in vitro digestibility of organic matter in forages — an investigation of the problems associated with continuous large-scale operation. Journal of the British Grassland Society 21: 140–147.Google Scholar
Davis, A. W. and Hall, W. B. 1969. Cyclic changeover designs. Biometrika 56: 283–292.CrossRefGoogle Scholar
Halliwell, G. 1957. Cellulolysis by rumen microorganisms. Journal of General Microbiology 17: 153–165.Google Scholar
Hunter, E. A. and Mann, A. D. 1979. EDEX-Analysis of experiments. Edinburgh Catalogue No. 19, 250.800. ARC Unit of Statistics, Edinburgh University.Google Scholar
Izumi, Y. 1976. [The influence of fodder beet intake upon VFA production in the rumen of the cow.] Japanese Journal of Zootechnical Science 47: 33–38.Google Scholar
Jans, V. F. 1983. [Fodder beet in dairy cattle ration.] Simmenlaler Fleckvieh 6: 50–54.Google Scholar
Mould, F. L. and Ørskov, E. R. 1983. Manipulation of rumen fluid pH and its influence on cellulolysis in sacco, dry matter degradation and the rumen microflora of sheep offered either hay or concentrate. Animal Feed Science and Technology 10: 1–14.CrossRefGoogle Scholar
Ørskov, E. R., Andrews, R. P. and Gill, J. C. 1969. Effect of replacing rolled barley with swedes or potatoes on the intake and rumen volatile fatty acid composition of lambs. Animal Production 11: 187–194.Google Scholar
Ørskov, E. R., Soliman, H. S. and Macdearmid, A. 1978. Intake of hay by cattle given supplements of barley subjected to various forms of physical treatment or treatment with alkali. Journal of Agricultural Science, Cambridge 90: 611–615.Google Scholar
Ouin, B. F., Wright, C. E. and Woods, P. H. 1980. Measurement of sugar content in fodder and sugar beets. Proceedings of the Agronomy Society of New Zealand 10: 81–84.Google Scholar
Roberts, D. J. 1987. The effects of feeding fodder beet to dairy cows offered silage ad libitum. Grass and Forage Science 42: 391–395.CrossRefGoogle Scholar
Stewart, C. S. 1977. Factors affecting the cellulolytic activity of rumen contents. Applied Environmental Microbiology 33: 497–502.Google Scholar
Sutton, J. D., Hart, I. C. and Brostlr, W. H. 1982. The effect of feeding frequency on energy metabolism in milking cows given low-roughage diets. In Energy Metabolism of Farm Animals (ed. Ekern, A., SundstØl, F.), pp. 26–29. Agricultural University of Norway, Aas-NLH.Google Scholar
Terry, R. A., Tillly, J. M. A. and Outln, G. E. 1969. Effect of pH on cellulose digestion under in vitro conditions. Journal of the Science of Food and Agriculture 20: 317–320.Google Scholar