Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-29T03:51:16.571Z Has data issue: false hasContentIssue false
  • English
  • Français

Utilization of salts of volatile fatty acids by growing sheep

3*. Effect of frequency of feeding on the utilization of acetate and propionate by young growing lambs

Published online by Cambridge University Press:  09 March 2007

E. R. Ørskov  and
D. M. Allen
E. R. Ørskov
Affiliation:
Department of Agriculture, University of Reading
D. M. Allen
Affiliation:
Department of Agriculture, University of Reading
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. The effect, on the concentration of volatile fatty acids (VFA) in the rumen, of increasing the frequency of feeding from twice daily to four or six times daily was investigated in sheep given isocaloric rations containing VFA salts. In a second experiment isocaloric rations containing acetate and propionate were given to groups of lambs in two or six equal feeds daily. The efficiency with which the lambs utilized the VFA salts was measured as gain in live weight, empty body weight and carcass weight and was compared to that of lambs receiving only the basal ration. The composition of the carcasses was estimated from that of the loin. 2. Increasing the frequency of feeding from twice daily to four or six times daily significantly reduced the marked changes in rumen VFA composition associated with giving rations containing VFA salts twice daily. In lambs receiving acetate and propionate, final live weight, empty body weight and carcass weight were significantly greater than in lambs receiving only the basal ration (P < 0.001). The combustible energy from added VFA was apparently utilized more efficiently than the calculated metabolizable energy of the basal rations given above maintenance level, and there was no difference between the utilization of acetate and propionate. 3. There were no differences approaching significance between feeding twice daily and six times daily either between groups of lambs receiving only the basal diet or between those given the diets supplemented with VFA salts. Nor were there any interactions between VFA and frequency of feeding. 4. It is postulated that in ruminants the effect of frequency of feeding depends on the environment and level of feeding.

Type
Research Article
Information
British Journal of Nutrition , Volume 20 , Issue 3 , September 1966 , pp. 509 - 517
Copyright
Copyright © The Nutrition Society 1966

References

REFERENCES

Amstrong, D. G. & Blaxter, K. L. (1957). Br. J. Nutr. 11, 413.CrossRefGoogle Scholar
Armstrong, D. G., Blaxter, K. L., Graham, N. McC. & Wainman, F. W. (1958). Br. J. Nutr. 12, 177.CrossRefGoogle Scholar
Balch, D. A. & Rowland, S. J. (1957). Br. J. Nutr. 11, 288.CrossRefGoogle Scholar
Bath, I. H. & Rook, J. A. F. (1963). J. agric. Sci., Camb. 61, 341.CrossRefGoogle Scholar
Blaxter, K. L. (1962). The Energy Metabolism of Ruminants. London: Hutchinson, Scientific and Technical.Google Scholar
Blaxter, K. L., Graham, N. McC. & Wainman, F. W. (1956). Proc. Nutr. Soc. 15, 111.Google Scholar
Brody, S. (1945). Bioenergetics and Growth. New York: Reinhold Publishing Corp.Google Scholar
Gibbons, J. P. L. (1958). Agriculture, Lond. 65, 259.Google Scholar
Gordon, J. G. & Tribe, D. E. (1952). Br. J. Nutr. 6, 89.CrossRefGoogle Scholar
Kay, R. N. B. & Hobson, P. N. (1963). J. Dairy Res. 30, 261.CrossRefGoogle Scholar
Langlands, J. P., Corbett, J. L., McDonald, I. & Pullar, J. D. (1963). Anim. Prod. 5, 1.Google Scholar
Mochrie, R. D., Thomas, W. E. & Lucas, H. L. (1956). J. Anim. Sci. 15, 1256.Google Scholar
Ørskov, E. R. & Allen, D. M. (1966). Br. J. Nutr. 20, 295.CrossRefGoogle Scholar
Øarskov, E. R., Hovell, F. D. & Allen, D. M. (1966). Br. J. Nutr. 20, 307.CrossRefGoogle Scholar
Putnam, P. A., Gutierrez, J. & Davis, R. E. (1961). J. Dairy Sci. 44, 1364.CrossRefGoogle Scholar
Rakes, A. H., Hardison, W. A., Albert, J., Moore, W. E. C. & Graf, G. C. (1957). J. Dairy Sci. 40, 1621.CrossRefGoogle Scholar
Rakes, A. H., Lister, E. E. & Reid, J. T. (1961). J. Nutr. 75, 86.CrossRefGoogle Scholar
Rhodes, W. R. & Woods, W. (1962). J. Anim. Sci. 21, 108.CrossRefGoogle Scholar
Richardson, H. B. & Mason, E. H. (1923). J. biol. Chem. 57, 587.CrossRefGoogle Scholar
Rubner, M. (1902). Die Gesetze des Energieverbrauchs bei der Ernaehrung. Leipzig: Deuticke.Google Scholar
Satter, L. D. & Baumgardt, B. R. (1962). J. Dairy Sci. 45, 670.Google Scholar
Sørensen, P. H. (1961). In Nutrition of Pigs and Poultry, p. 88. [Morgan, J. T. and Lewis, D., editors] London: Butterworths.Google Scholar