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Effect of replacing rolled barley with swedes or potatoes on the intake and rumen volatile fatty acid composition of lambs

Published online by Cambridge University Press:  02 September 2010

E. R. Ørskov
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
R. P. Andrews
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
J. C. Gill
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
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Summary

The effect of gradually replacing barley with swedes or potatoes on intake of digestible dry matter and on the volatile fatty acid (VFA) composition of liquor was measured in an experiment with eight female and four castrated male sheep approximately six months old. The total intake of digestible dry matter was greatest when rolled barley was given at two-thirds of estimated maximal intake and roots given ad libitum. The intake of digestible dry matter was reduced to 80% of the highest intake when all the barley was substituted with swedes and to 70% of the highest intake when all the barley was substituted with potatoes. Replacing barley with roots had little or no influence on VFA composition.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1969

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References

REFERENCES

Andrews, R. P., Kay, M. and Ørskov, E. R. 1969. The effect of different dietary energy concentrations on the voluntary intake and growth by intensively fed lambs. Anim. Prod. 11: 173185.Google Scholar
Balch, C. C. and Campling, R. C. 1962. Regulation of voluntary food intake in ruminants. Nutr. Abstr. Rev. 32: 669686.Google ScholarPubMed
Blaxter, K. L. 1966. Nutritional problems arising in intensive animal production and energy aspects. Proc. 9th int. Congr. Anim. Prod., Edinburgh, pp. 7379.Google Scholar
Campling, R. C. and Balch, C. C. 1961. Factors affecting the voluntary intake of food by cows. 1. Preliminary observations on the effect on the voluntary intake of hay of changes in the amount of the reticulo-rumen contents. Br. J. Nutr. 15: 523530.CrossRefGoogle Scholar
Dodsworth, T. L. 1956. Studies on the starch values of swedes, fodder beet and grass silage and on the complementary value of grass silage and roots when fed together to ruminants. J. agric. Sci., Camb. 47: 456460.CrossRefGoogle Scholar
Elliot, R. C. 1967. Voluntary intake of food by ruminants. II. Intake of food by sheep. J. agric. Sci., Camb. 69: 383390.CrossRefGoogle Scholar
Langlands, J. P., Corbett, J. L., McDonald, I. and Pullar, J. D. 1963. Estimates of the energy required for maintenance by adult sheep. 1. Housed sheep. Anim. Prod. 5: 19.Google Scholar
Montgomery, M. J. and Baumgardt, B. R. 1965. Regulation of food intake in ruminants. I. Pelleted rations varying in energy concentration. J. Dairy Sci. 48: 569574.CrossRefGoogle ScholarPubMed
McMillan, J. A. 1927. Report on experiments on the winter feeding of sheep at the Manor Farm, Garforth. The University of Leeds and the Yorkshire Council for Agricultural Education, Bulletin no. 153.Google Scholar
Ørskov, E. R., Flatt, W. P. and Moe, P. W. 1968. A fermentation balance approach to estimate extent and efficiency of volatile fatty acid formation in ruminants. j. Dairy Sci. 51: 14291435.CrossRefGoogle Scholar
Ørskov, E. R. and Fraser, C. 1968. Dietary factors influencing starch disappearance in various parts of the alimentary tract and caecal fermentation in early weaned lambs. Proc. Nutr. Soc. 27: 37A.Google Scholar
Ørskov, E. R. and Oltjen, R. R. 1967. Influence of carbohydrate and nitrogen sources on the rumen volatile fatty acids and ethanol of cattle fed purified diets. J. Nutr. 93: 222228.CrossRefGoogle ScholarPubMed
Owen, J. B., Davies, D. A. R., Miller, E. L. and Ridgman, W. J. 1967. The intensive rearing of lambs. 2. Voluntary food intake and performance on diets of varying oat husk and beef tallow content. Anim. Prod. 9: 509520.Google Scholar
Robertson, G. C. A. and Nicoll, W. B. 1929. Report on an experiment on the winter feeding of sheep at the Manor Farm, Garforth. The University of Leeds and the Yorkshire Council for Agricultural Education, Bulletin no. 163.Google Scholar