Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-23T05:45:40.496Z Has data issue: false hasContentIssue false
  • English
  • Français

Prediction of the apparent digestible energy value of fats given to pigs

Published online by Cambridge University Press:  02 September 2010

J. Powles ,
J. Wiseman ,
D. J. A. Cole  and
S. Jagger
J. Powles
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD
J. Wiseman
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD
D. J. A. Cole
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD
S. Jagger
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD
Get access

Abstract

Data from experimental programmes designed to investigate the effect of chemical structure of fats upon their apparent digestible energy (DE) value for pigs were subjected to regression analysis. For growing pigs, over the approximate live-weight range 30 to 90 kg, 25 data points were available, with fats evaluated having a range in the ratio of unsaturated to saturated fatty acids (U/S) from 0·66 to 15·67 and in free fatty acid (FFA) content from 8 to 818 g/kg. Sixteen data points were available for young pigs of approximately 12 kg live weight with a range in U/S from 0·62 to 5·71 and in FFA content from 54 to 756 g/kg. The wide range of values for U/S and FFA content had been obtained by blending different fats and, therefore, represented both the range and extremes likely to be found in the formulation of pig diets. Derivation of prediction equations for DE were based upon a series of non-linear regression analyses employing, in sequence, U/S, U/S + FFA content and U/S × FFA content. The DE offats could be predicted from U/S and FFA content with equations accounting for 0·802 and 0·768 of the variation in DE values for growing and young pigs respectively. The most appropriate equation for pigs of all live weights employed U/S and FFA content additively (U/S + FFA content). The equation for growing pigs was DE (MJ/kg) = 36·898 – (0·0046FFA (g/kg)) — 7·33e(–0·906U/S) and for young pigs was DE (MJ/kg) = 37·890 — (0·0051FFA (g/kg)) –8·20e(–0·515U/S). Comparisons revealed that differences between the two age groups, with lower values achieved with younger pigs, -were more pronounced the lower U/S and the higher FFA content of the fat.

Keywords

digestible energyfatspigs
Type
Research Article
Information
Animal Science , Volume 61 , Issue 1 , August 1995 , pp. 149 - 154
Copyright
Copyright © British Society of Animal Science 1995

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

Alderman, G. 1985. Prediction of the energy value of compound feeds. In Recent advances in animal nutrition — 2985 (ed. Haresign, W. and Cole, D. J. A.), pp.3–52. Butterworths, London.CrossRefGoogle Scholar
Batterham, E. S. 1990. Prediction of the dietary energy value of diets and raw materials for pigs. In Feedstuff evaluation (ed. Wiseman, J. and Cole, D. J. A.), pp. 267–281. Butterworths, London.CrossRefGoogle Scholar
Cera, K. R., Mahan, D. C. and Reinhart, G. A. 1989. Apparent fat digestibilities and performance responses of postweaning swine fed diets supplemented with coconut oil, corn oil or tallow. Journal of Animal Science 67:2040–2047.CrossRefGoogle Scholar
Fisher, C. 1982. Energy values of poultry compound feeds. Occasional publication, Poultry Research Centre, Roslin, Midlothian, no. 2.Google Scholar
Freeman, C. P. 1976. Digestion and absorption of fat. In Digestion and absorption in the fowl (ed. Boorman, K. N. and Freeman, B. M.), pp.117–142. British Poultry Science, Edinburgh.Google Scholar
Powles, J., Wiseman, J., Cole, D. J. A. and Hardy, B. 1993. Effect of chemical structure of fats upon their apparent digestible energy value when given to growing/finishing pigs. Animal Production 57:137–146.Google Scholar
Powles, J., Wiseman, J., Cole, D. J. A. and Hardy, B. 1994. Effect of chemical structure of fats upon their apparent digestible energy value when given to young pigs. Animal Production 58:411–417.Google Scholar
Wiseman, J. and Blanch, A. 1994. The effect of free fatty acid content on the apparent metabolisable energy content of coconut/palm kernel oil for broiler chickens aged 12 and 52 days. Animal Feed Science and Technology 47:225–236.CrossRefGoogle Scholar
Wiseman, J., Cole, D. J. A. and Hardy, B. 1990. The dietary energy values of soya-bean oil, tallow and their blends for growing/finishing pigs. Animal Production 50:513–518.Google Scholar
Wiseman, J., Edmunds, B. K. and Shepperson, N. 1992. The apparent metabolisable energy of sunflower oil and sunflower acid oil for broiler chicks. Animal Feed Science Technology 36:41–51.CrossRefGoogle Scholar
Wiseman, J., Salvador, F. and Craigon, J. 1991. Prediction of the apparent metabolisable energy content of fats fed to broiler chickens. Poultry Science 70:573–582.CrossRefGoogle Scholar