Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-26T21:31:42.440Z Has data issue: false hasContentIssue false
  • English
  • Français

Amino acid and energy interactions in growing pigs 1. Effects of food intake, sex and live weight on the responses of growing pigs to lysine concentration

Published online by Cambridge University Press:  02 September 2010

E. S. Batterham ,
L. R. Giles  and
E. Belinda Dettmann
E. S. Batterham
Affiliation:
Department of Agriculture, Agricultural Research Centre, Wollongbar, New South Wales 2480, Australia
L. R. Giles
Affiliation:
Department of Agriculture, Agricultural Research Centre, Wollongbar, New South Wales 2480, Australia
E. Belinda Dettmann
Affiliation:
Department of Agriculture, Agricultural Research Centre, Wollongbar, New South Wales 2480, Australia
Get access

Abstract

The responses of growing pigs to dietary lysine concentration, as influenced by food intake, sex (intact males and females) and live weight were investigated in a 4 x 2 x 2 x 2 factorial experiment involving 128 Large White pigs. Lysine concentrations were 7, 8, 9 and 10 g/kg air-dry food. The basal wheat-soya bean meal diet (14·0 MJ digestible energy per kg) was offered either ad libitum or on a restricted feeding scale to pigs from 20 to 85 kg live weight. During the 50 to 85 kg growth phase, the effects of proportionately reducing the lysine concentrations by 0·2 were investigated. Performance response was assessed in two ways; by analysis of variance for the 20 to 50, 50 to 85 and 20 to 85 kg phases, and by response surface analyses of data from successive 10-kg weight intervals.

An initial analysis of variance indicated that food intake (of pigs fed ad libitum), daily gain and food conversion ratio varied with lysine concentration, but that the responses differed with food intake, sex and phase of growth.

Analysis of the response surfaces delineated by lysine level and phase of growth indicated that for males and females with restricted food and males fed ad libitum, maximum daily gain was produced by feeding at least 10 g lysine per kg, declining to about 8 g/kg at 80 kg. With females fed ad libitum, maximum daily gain was obtained by feeding 9·9 g lysine per kg at 20 kg, declining to less than 5·6 g/kg at 75 kg.

Carcass characteristics were largely unaffected by lysine concentration.

Type
Research Article
Information
Animal Production , Volume 40 , Issue 2 , April 1985 , pp. 331 - 343
Copyright
Copyright © British Society of Animal Science 1985

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
Agricultural Research Council. 1981. The Nutrient Requirements of Pigs. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Association of Official Analytical Chemists. 1975. Official Methods of Analysis of the Association of Official Analytical Chemists. 12th ed. Association of Official Analytical Chemists, Washington, DC.Google Scholar
Baker, D. H., Katz, R. S. and Easter, R. A. 1975. Lysine requirement of growing pigs at two levels of dietary protein. J. Anim. Sci. 40: 851–856.Google Scholar
Batterham, E. S. 1979. Lupinus albus cv. Ultra and Lupinus angustifolius cv. Unicrop as protein concentrates for growing pigs. Aust. J. agric. Res. 30: 369–375.CrossRefGoogle Scholar
Batterham, E. S. 1980. Amino acid availability in pig diets with special reference to natural proteins and synthetic amino acids. In Recent Advances in Animal Nutrition — 1979 (ed. Haresign, W. and Lewis, D.), pp. 11–22. Butterworth, London.Google Scholar
Batterham, E. S. and Murison, R. D. 1981. Utilization of free lysine by growing pigs. Br. J. Nutr. 46: 87–92.CrossRefGoogle ScholarPubMed
Batterham, E. S., Murison, R. D. and Lewis, C. E. 1979. Availability of lysine in protein concentrates as determined by the slope-ratio assay with growing pigs and rats and by chemical techniques. Br. J. Nutr. 41: 383–391.Google Scholar
Cole, D. J. A. 1979. Amino acid nutrition of the pig In Recent Advances in Animal Nutrition — 1978 (ed Haresign, W. and Lewis, D.), pp. 59–72. Butterworth, London.Google Scholar
Easter, R. A. and Baker, D. H. 1980. Lysine and protein levels in corn-soybean meal diets for growing-finishing swine. J. Anim. Sci. 50: 467–471.Google Scholar
Lewis, C. E. and Lowe, R. F. 1977. Automated Amino Acid Analysis of Feedstuff Protein Using the Technicon NC-2P Chromatography System. New South Wales Department of Agriculture, Wollongbar.Google Scholar
Matheson, N. A. 1974. The determination of tryptophan in purified proteins and in feeding-stuffs. Br. J. Nutr. 31: 393–400.CrossRefGoogle ScholarPubMed
Miller, R. G. Jr 1964. A trusty jackknife. Ann. math. Statist. 35: 1594–1605.Google Scholar
National Research Council. 1973. Nutrient Requirements of Domestic Animals. No. 2, Nutrient Requirements of Swine. 7th ed. National Academy of Sciences, Washington, DC.Google Scholar
National Research Council. 1979. Nutrient Requirements of Domestic Animals. No. 2, Nutrient Requirements of Swine. 8th ed. National Academy of Sciences, Washington, DC.Google Scholar
Taverner, M. R., Hume, I. D. and Farrell, D. J. 1981. Availability to pigs of amino acids in cereal grains. 2. Apparent and true ileal availability. Br. J Nutr. 46: 159–171.Google Scholar