Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-27T19:23:00.782Z Has data issue: false hasContentIssue false
  • English
  • Français

Responses to variations in dietary energy intakes by growing pigs 1. Estimates of digestible and metabolizable energy requirements for maintenance

Published online by Cambridge University Press:  02 September 2010

J. L. Davies  and
I. A. M. Lucas
J. L. Davies
Affiliation:
University College of North Wales, Bangor
I. A. M. Lucas
Affiliation:
University College of North Wales, Bangor
Get access

Summary

Groups of individually-fed pigs, each of three gilts and three castrates of mean live weights 18, 31, 46, 58, 72 and 80 kg, were given for 20 days feed allowances based on the ARC estimates of energy required for maintenance, assuming an efficiency of utilization of digestible energy (DE) of 77% for maintenance. As the actual diet used had a higher DE value than that calculated before the start of the experiment, DE intakes (260·3 W056) were about 4·0% above the ARC values.

There was no statistically significant change in live weight over the period of study. This supports the validity of the ARC estimates, if maintenance is defined as a lack of change in body weight.

The metabolizable energy (ME) intakes (248·3 W0·56) which maintained weight were also close to other estimates of ME requirements.

Type
Research Article
Information
Animal Production , Volume 15 , Issue 2 , October 1972 , pp. 111 - 116
Copyright
Copyright © British Society of Animal Science 1972

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

Agricultural Research Council. 1967. The Nutrient Requirements of Farm Livestock. No. 3, Pigs. Agricultural Research Council, London.Google Scholar
Blaxter, K. L. 1962. The Energy Metabolism of Ruminants. Hutchinson, London.Google Scholar
Breirem, K. 1936. Basal metabolism of growing pigs. Tierernährung, 8: 463–498.Google Scholar
Breirem, K. 1939. The energy exchange of pigs. Tierernahrung, 11: 487–528.Google Scholar
Deighton, T. 1929. A study of the metabolism of two breeds of pigs. J. agric. Sci., Camb., 19: 140–184.Google Scholar
Kielanowski, J. 1966. Efficiency of energy utilisation in growing pigs. Proc. 9th int. Congr. Anim. Prod., Edinb., pp. 212–224.Google Scholar
Kielanowski, J. 1971. Energy requirements of the growing pig. In Proc. 18th Easter Sch. agric. Sci., Univ. Nott. (ed. Cole, D. J. A.). Butterworths, London.Google Scholar
Kotarbinska, M. and Kielanowski, J. 1969. Energy balance studies with growing pigs by the comparative slaughter technique. In Energy Metabolism of Farm Animals, (ed. Blaxter, K. L., Kielanowski, J. and Thorbek, G.), pp. 299–310. Oriel Press Ltd, Newcastle upon Tyne.Google Scholar
Nasset, E. S. 1964. The nutritional significance of endogenous nitrogen secretion in non ruminants. In The Role of the Gastro-intestinal Tract in Protein Metabolism, pp. 83–96. Blackwell, Oxford.Google Scholar
Sharma, V. D. and Young, L. G. 1970a. Energy requirement for maintenance and production in Lacombe and Yorkshire pigs. J. Anim. Sci. 31: 210 (Abstr.).Google Scholar
Sharma, V. D. and Young, L. G. 1970b. The energy cost of protein and fat deposition in young pigs. J. Anim. Sci. 31: 210 (Abstr.).Google Scholar
Thorbek, G. 1969. Studies on the energy metabolism of growing pigs. In Energy Metabolism of Farm Animals, (ed. Blaxter, K. L., Kielanowski, J. and Thorbek, G.), pp. 281–289. Oriel Press Ltd, Newcastle upon Tyne.Google Scholar