Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-25T00:59:52.306Z Has data issue: false hasContentIssue false
  • English
  • Français

The effects of environmental temperature and plane of nutrition on heat loss, energy retention and deposition of protein and fat in groups of growing pigs

Published online by Cambridge University Press:  09 March 2007

M. W. A. Verstegen ,
W. H. Close ,
I. B. Start  and
L. E. Mount
M. W. A. Verstegen
Affiliation:
Agricultural Research Council, Institute of Animal Physiology, Babraham, Cambridge
W. H. Close
Affiliation:
Agricultural Research Council, Institute of Animal Physiology, Babraham, Cambridge
I. B. Start
Affiliation:
Agricultural Research Council, Institute of Animal Physiology, Babraham, Cambridge
L. E. Mount
Affiliation:
Agricultural Research Council, Institute of Animal Physiology, Babraham, Cambridge
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. Eight groups each of four castrated male pigs, 25–30 kg initial body-weight, were kept for periods of 3 weeks in a calorimeter equipped as a pig pen and maintained at either 8° or 20°. At each temperature two feeding levels (g food/kg body-weight per d) were used, 45 and 52 at 8°, and 39 and 45 at 20°. Metabolizable energy, heat loss and nitrogen balance were measured.

2. Heat loss was higher at 8° than at 20° and was independent of plane of nutrition, whereas at 20° the higher heat loss occurred at the higher plane of nutrition. Energy retention depended on both temperature and feeding level, and was highest at the 52 g feeding level at 8°.

3. N retention was not influenced by environmental temperature but varied with plane of nutrition (correlation coefficient = 0·94), the increase being 9·98 (± 0·8) mg N per g food increase. The correlation coefficient between N retention and body-weight gain was also 0·94; body-weight gain was correlated with N retention rather than with fat deposition. Fat gain was reduced at the lower feeding levels and at the lower environmental temperature at the feeding level of 45 g/kg.

4. The partial efficiency of energy retention at 20° was 66·5%. From this efficiency the maintenance requirement (at zero energy retention) at 20° was calculated to be 418 kJ/kg0·75. At 8° the partial efficiency of energy retention was 99·4%.

Type
Clinical and Human Nutrition
Information
British Journal of Nutrition , Volume 30 , Issue 1 , July 1973 , pp. 21 - 35
Copyright
Copyright © The Nutrition Society 1973

References

Breirem, K. (1935). Beretn. Forøslab. no. 162.Google Scholar
Breirem, K. (1939). Tierernährung 11, 437.Google Scholar
Brouwer, E. (1965). Publs Eur. Ass. Anim. Prod. no. 11, p. 441.Google Scholar
Close, W. H. (1970). Nutrition-environmental interactions of growing pigs. PhD Thesis, The Queen's University of Belfast.Google Scholar
Close, W. H. & Mount, L. E. (1971). Proc. Nutr. Soc. 30, 33A.Google Scholar
Close, W. H., Mount, L. E. & Start, I. B. (1971). Anim. Prod. 13, 285.Google Scholar
Fuller, M. F. (1965). Br. J. Nutr. 19, 531.CrossRefGoogle Scholar
Fuller, M. F. & Boyne, A. W. (1971). Br. J. Nutr. 25, 259.CrossRefGoogle Scholar
Graham, N. McC., Wainman, F. W., Blaxter, K. L. & Armstrong, D. G. (1959). J. agric. Sci., Camb. 52, 13.CrossRefGoogle Scholar
Holmes, C. W. (1966). Studies on the effects of environment on heat losses from pigs. PhD Thesis, The Queen's University of Belfast.Google Scholar
Holmes, C. W. & Mount, L. E. (1967). Anim. Prod. 9, 435.Google Scholar
Hornicke, H. (1962). Z. Tierphysiol. Tierernähr. Futtermittelk. 17, 28.CrossRefGoogle Scholar
Jenkinson, G. M., Young, L. G. & Ashton, G. C. (1967). Can. J. Anim. Sci. 47, 217.CrossRefGoogle Scholar
Kleiber, M. (1961). The Fire of Life. New York: Wiley.Google Scholar
Livingston, D. M. S., Fuller, M. F. & Livingstone, R. M. (1969). Anim. Prod. 11, 55.Google Scholar
Ludvigsen, J. & Thorbek, G. (1955). Beretn. Forøgslab. no. 283.Google Scholar
Lund, A. (1938). Beretn. Forøgslab. no. 180.Google Scholar
Mount, L. E., Holmes, C. W., Close, W. H., Morrison, S. R. & Start, I. B. (1971). Anim. Prod. 13, 561.Google Scholar
Mount, L. E., Holmes, C. W., Start, I. B. & Legge, A. J. (1967). J. agric. Sci., Camb. 68, 47.CrossRefGoogle Scholar
Oslage, H. J. & Fliegel, H. (1965). Publs Eur. Ass. Anim. Prod. no. 11, p. 297.Google Scholar
Piatkowski, B. (1958). Arch. Tierernähr. 8, 161.CrossRefGoogle Scholar
Sørensen, P. H. (1962). In Nutrition of Pigs and Poultry p. 88 [Morgan, J. T. and Lewis, D. H., editors]. London: Butterworths.Google Scholar
Thorbek, G. C. (1969). Publs Eur. Ass. Anim. Prod. no. 12, p. 281.Google Scholar
Verstegen, M. W. A. (1971). Meded. LandhHogesch., Wageningen 71–2.Google Scholar
Wood, T. B. (1926). J. agric. Sci., Camb. 16, 425.CrossRefGoogle Scholar