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The influence of level of feeding on nutrient partition and energy metabolism in pigs of different growth potential

Published online by Cambridge University Press:  24 November 2017

G.H. Laswai ,
W.H. Close ,
C.E. Sharpe  and
H.D. Keal
G.H. Laswai
Affiliation:
AFRC Institute of Grassland & Environmental Research, Church Lane, Shinfield, Reading RG2 9AQ, Berks
W.H. Close
Affiliation:
AFRC Institute of Grassland & Environmental Research, Church Lane, Shinfield, Reading RG2 9AQ, Berks
C.E. Sharpe
Affiliation:
AFRC Institute of Grassland & Environmental Research, Church Lane, Shinfield, Reading RG2 9AQ, Berks
H.D. Keal
Affiliation:
AFRC Institute of Grassland & Environmental Research, Church Lane, Shinfield, Reading RG2 9AQ, Berks
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Extract

Continued improvement through genetic selection and the use of entire males has resulted in pigs with considerable potential for lean tissue growth rate. These animals have, however, lower appetites and this suggests that there may be considerable differences in the partition and in the efficiency of utilisation of dietary nutrients, compared with those previously recommended by ARC (1981). There may also be differences in energy expenditure since Campbell and Taverner (1988) and Rao and McCracken (1990) have suggested that animals of high potential for lean tissue growth rate have higher maintenance energy requirements. There is little information on the energy requirements of pigs of different growth potential and the present experiments were designed to evaluate the effects of feeding levels on nutrient partition and energy metabolism of pigs of different body weights and sex.

Type
Pig nutrition
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1991 , March 1991 , pp. 38
Copyright
Copyright © The British Society of Animal Production 1991

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References

Agricultural Research Council (1981) The Nutrient Requirements of Pigs. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Campbell, R.G. and Taverner, M.R. (1988) Genotype and sex effects on the relationship between energy intake and protein deposition in growing pigs. J. Anim. Sci. 66, 676–686.Google Scholar
Laswai, G.H., Close, W.H. and Keal, H.D. (1991) The voluntary feed intake of modern pig genotypes. 101st BSAP Winter Meeting, Scarborough 1991 (Paper No. 135).Google Scholar
Rao, D.S. and Mccracken, K.J. (1990) Effects of feed intake on protein and energy retention of boars of high genetic potential for lean growth. Anim. Prod. 50, 571–572.Google Scholar