Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-11T10:37:20.219Z Has data issue: false hasContentIssue false
  • English
  • Français

A growth model to estimate economic values for food intake capacity in pigs

Published online by Cambridge University Press:  02 September 2010

A. G. de Vries  and
E. Kanis
A. G. de Vries
Affiliation:
Department of Animal Breeding, Agricultural University, PO Box 338, 6700 AH Wageningen, The Netherlands
E. Kanis
Affiliation:
Department of Animal Breeding, Agricultural University, PO Box 338, 6700 AH Wageningen, The Netherlands
Get access

Abstract

A biological growth model was developed to study economic values for average ad libitum food intake capacity (FIC) in growing pigs. The model was based on the linear/plateau relationship between protein deposition and food intake. Input variables were: minimum fat to protein deposition ratio (R), maximum protein deposition rate (Pdmax)and food intake (FI). Output variables were production traits and production costs.

Economic values (under commercial conditions with ad libitum feeding) were derived with the growth model for each of the traits FIC, R, and Pdmax keeping the other two traits constant, for three alternative levels of FIC. If FIC was too low to realize Pdmax, FIC had a positive economic value, R had a negative economic value and the value of Pdmax was zero. If FIC was higher than necessary to realize Pdmax, economic values were negative, zero and positive for FIC, R, and Pdmax respectively. If FIC was just sufficient to realise Pdmax, the lowest production costs occurred. Now, R had a negative economic value and Pdmax had a positive economic value.

With a restricted feeding regimen under commercial conditions a daily food supply just sufficient to realize Pdmax should be pursued. It was concluded that use of a biological growth model to estimate economic values for FIC would give more insight into correct selection strategies than would the use of an economic model.

Keywords

food intakegrowth modelspigsselection criteria
Type
Research Article
Information
Animal Production , Volume 55 , Issue 2 , October 1992 , pp. 241 - 246
Copyright
Copyright © British Society of Animal Science 1992

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

Agricultural Research Council. 1981. The nutrient requirements of pigs. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Black, J. L., Campbell, R. G., Williams, I. H., James, K. J. and Davies, G. T. 1986. Simulation of energy and amino acid utilization in the pig. Research and Development Agricultures 3: 121–145.Google Scholar
Brandt, H., Hong, K. Ch. and Glodek, P. 1985. [Breeding aim in German pig breeding. Part 2. Including food intake i n the estimation of breeding value.] Züchtungskunde. 57: 92–98.Google Scholar
Campbell, R. G. and Taverner, M. R. 1985. Effects of strain and sex on protein and energy metabolism in growing pigs. Proceedings of the tenth symposium on energy metabolism farm animals, Airlie, Virginia, European Association for Production publication no. 32, pp. 78–81.Google Scholar
Campbell, R G., Taverner, M. R. and Curie, D. M. 1985. Effects of sex and energy intake between 48 and 90 kg live weight on protein deposition in growing pigs. Animal Production 40: 497–503.Google Scholar
Cop, W. A. G. 1974. Protein and fat deposition in pigs in relation to body weight gain and feeding level. Communications, Agricultural University, Wageningen, 74–78.Google Scholar
Ellis, M., Smith, W. C., Henderson, R., Whittemore, C. T. and Laird, R. 1983. Comparative performance and body composition of control and selection line Large White pigs. 2. Feeding to appetite for a fixed time. Animal Production 36: 407–413.Google Scholar
Foster, W. H., Kilpatrick, D. J. and Heaney, I. H. 1983. Genetic variation in the efficiency of energy utilization by the fattening pig. Animal Production 37: 387–393.Google Scholar
Fowler, V. R. 1986. Biological advances towards genetic improvement in pigs. Proceedings of the third world on genetics applied to livestock production. XI. Genetics reproduction, lactation, growth, adaptation, disease, and resistance, pp. 345–354.Google Scholar
Gaus, G. 1984. [Investigations of protein retention in growing pigs.] Ph.D. Thesis, University of Hohenheim.Google Scholar
Hong, K. Ch. 1985. [Antagonism between meat production and food intake in German pig populations and consequences for breeding.] Ph.D. Thesis, Georg-August University, Göttingen.Google Scholar
Kanis, E. 1988. Effect of average daily food intake on production performance in growing pigs. Animal Production 46: 111–122.Google Scholar
Kanis, E. and Vries, A. G. de. 1992. Optimization of selection for food intake capacity in pigs. Animal Production 55: 247–255.Google Scholar
Metz, S. H. M., Kamphuis, F. W., Mentink, A. C. M., Kanis, E., Van der Peet-Schwering, C. M. C. and Verstegen, M. W. A. 1986. Simulation of growth performance in growing/fattening pigs. Proceedings of the thirty-seventh annual meeting of the European Association Animal Production, Budapest.Google Scholar
Mitchell, G., Smith, C., Makower, M. and Bird, P. J. W. N. 1982. An economic appraisal of pig improvement in Great Britain. 1. Genetic and production aspects. Animal Production 35: 215–224.Google Scholar
Morgan, C. A. and Whittemore, C. T. 1986. Growth response prediction in relation to optimization of pig meat production. Proceedings of the thirty-seventh annual meeting the European Association for Animal Production, Budapest.Google Scholar
Moughan, P. J. and Smith, W. C. 1984. Prediction of dietary protein quality based on a model of the digestion and metabolism of nitrogen in the growing pig. New Zealand fournal of Agricultural Research 27: 501–507.CrossRefGoogle Scholar
Moughan, P. J. and Verstegen, M. W. A. 1987. The simulation of growth in the pig. Netherlands Journal Agricultural Science 36: 145–160..CrossRefGoogle Scholar
Siebrits, F. K., Kemm, E. H., Ras, M. N. and Barnes, P. M. 1986. Protein deposition in pigs as influenced by sex, type and live-mass. 1. The pattern and composition of protein deposition. South African Journal of Animal Science 16: 23–27Google Scholar
Smith, C. and Fowler, V. R. 1978. The importance of selection criterion and feeding regimes in the selection and improvement of pigs. Livestock Production Science 5: 415–423.CrossRefGoogle Scholar
Tullis, J. B. 1981. Protein growth in pigs. Ph.D. Thesis, University of Edinburgh.Google Scholar
Vries, A. G. de. 1989. A model to estimate economic values of traits in pig breeding. Livestock Production Science 49–66.CrossRefGoogle Scholar
Walstra, P. 1980. Growth and carcass composition from birth to maturity in relation to feeding level and sex in Dutch Landrace pigs. Communications, Agricultural University, Wageningen, 80–4.Google Scholar
Webb, A. J. 1986. Genetic control of growth, composition, appetite and feed utilisation: non-ruminants. Options for genetic change. Proceedings of the third world congress genetics applied to livestock production. XL Genetics of reproduction, lactation, growth, adaptation, disease, and resistance, pp. 337–344.Google Scholar
Webb, A. J. and Curran, M. K. 1986. Selection regime by production system interaction in pig improvement: a review of possible causes and solutions. Livestock Production Science 14: 415–423.CrossRefGoogle Scholar
Whittemore, C. T. 1983. Development of recommended energy and protein allowances for growing pigs. Agricultural Systems. 11: 159–186.CrossRefGoogle Scholar
Whittemore, C. T. and Fawcett, R. H. 1976. Theoretical aspects of a flexible model to simulate protein and lipid growth in pigs. Animal Production 22: 87–96.Google Scholar