Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-05-06T09:13:27.697Z Has data issue: false hasContentIssue false
  • English
  • Français

An estimate of the energy required for maintenance and live-weight gain by young grazing sheep

Published online by Cambridge University Press:  27 March 2009

R. C. Grimes
R. C. Grimes
Affiliation:
Department of Agronomy, University of New England, Armidale, N.S.W.
Get access Rights & Permissions [Opens in a new window]

Extract

1. The intake of grazing wethers was estimated from the in vitro organic matter digestibility of herbage samples collected from sheep with oesophageal fistulae, and total faecal collections.

2. Body water, estimated by isotope dilution, was used to estimate total body energy from estab-lished regressions relating body water to body composition.

3. Total body energy was then related to live weight by regression analysis, giving a value of 2044 kcal. per lb. over the range 68-90 lb. empty body weight. From this it was estimated that 2.41 lb. D.O.M. was required per lb. live-weight gain within this range.

4. Energy for maintenance was calculated by deducting D.O.M. required for gain from D.O.M. intake. These values were related to live weight by regression analysis to give a value of 1.31 lb. D.O.M./day for the maintenance of a 100 lb. sheep.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 66 , Issue 2 , April 1966 , pp. 211 - 215
Copyright
Copyright © Cambridge University Press 1966

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Armstrong, D. G. (1964). J. Agric. Sci. 62, 399.CrossRefGoogle Scholar
Blaxter, K. L. (1964). Proc. Nutr. Soc. 23, 62.CrossRefGoogle Scholar
Blaxter, K. L. & Book, J. A. F. (1953). Brit. J. Nutr. 7, 83.CrossRefGoogle Scholar
Bray, G. A. (1960). Anal. Biochem. 1, 279.Google Scholar
Coop, I. E. (1962). J. Agric. Sci. 58, 179.CrossRefGoogle Scholar
Coop, I. E. & Drew, K. R. (1963). Proc. N.Z. Soc. Anim. Prod. 23, 53.Google Scholar
Coop, I. E. & Hill, M. K. (1962). J. Agric. Sci. 58, 187.CrossRefGoogle Scholar
Evans, R. E. (1960). Rations for livestock, U.K. Minist. Agric. Bull. no. 48.Google Scholar
Gardner, R. W., Hogue, D.E. & Bensadoun, A. (1964). J. Anim. Sci. 23, 943.CrossRefGoogle Scholar
Graham, N. McC. (1964a). Aunt. J. Agric. Res. 15, 974.Google Scholar
Graham, N. McC. (1964b). Proc. Aust. Soc. Anim. Prod. 5, 272.Google Scholar
Greenhall, A. F. (1959). N.Z. J. Agric. Res. 2, 639.CrossRefGoogle Scholar
Grimes, R. C, Watkin, B. R. & Gallagher, J. R. (1966). J. Agric. Sci. 66, 113.CrossRefGoogle Scholar
Lambourne, L. J. (1961). Proc. N.Z. Soc. Anim. Prod. 21, 92.Google Scholar
Lambotune, L. J. & Reardon, T. F. (1963). Aust. J. Agric. Res. 14, 272.Google Scholar
Langlands, J. P., Corbett, J. L., Mcdonald, I. & Reid, G. W. (1963). Anim. Prod. 5, 11.Google Scholar
Panaretto, B. A. & Till, A. R. (1963). Aust. J. Agric. Res. 14, 926.CrossRefGoogle Scholar
Tilley, J. M. A. & Terry, R. A. (1963). J. Brit. Orassl. Soc. 18, 104.CrossRefGoogle Scholar
Woodman, H. E. (1948). Rations for livestock, U.K. Minist. Agric. Bull. no. 48.Google Scholar