Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-27T18:57:36.864Z Has data issue: false hasContentIssue false
  • English
  • Français

The responses of growing pigs to dietary lysine, as free lysine hydrochloride or in soya-bean meal, and the influence of food intake

Published online by Cambridge University Press:  02 September 2010

M. F. Fuller ,
J. Wood ,
A. C. Brewer ,
K. Pennie  and
R. MacWilliam
M. F. Fuller
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
J. Wood
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
A. C. Brewer
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
K. Pennie
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
R. MacWilliam
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
Get access

Abstract

One hundred and ninety-two individually fed pigs, half of them castrated males and half females, were used to examine the effects of reducing the concentration of dietary lysine below the value of 0·84 g/MJ digestible energy suggested by the Agricultural Research Council (1981). Lysine was varied by altering the inclusion of either free lysine hydrochloride or soya-bean meal. Over the whole experiment from 18 to 65 kg live weight, there were significant reductions in live-weight gain and increases in food: gain ratio in response to reducing lysine concentration; these changes were greater with soya-bean meal than with free lysine. During later growth (45 to 65 kg) alterations in lysine concentration had no significant effect.

For pigs given soya-bean supplements, both the live weights after fasting and the carcass weights were significantly lower than for those given free lysine hydrochloride, suggesting that at least part of the difference in growth between pigs given free lysine hydrochloride and soya-bean was attributable to this difference. The food required per kg carcass weight gain, or per kg lean tissue gain, was not affected by the source of lysine.

In a subsidiary experiment using nitrogen balance, supplements of five amino acids in addition to lysine did not increase nitrogen retention, providing further evidence that lysine was the only amino acid responsible for the response seen with soya-bean meal. It was concluded that for growing pigs with daily food intakes of 1·5 to 1·8 kg, a lysine concentration of at least 0·81 g/MJ digestible energy is required to maximize performance.

Type
Research Article
Information
Animal Production , Volume 43 , Issue 3 , December 1986 , pp. 477 - 484
Copyright
Copyright © British Society of Animal Science 1986

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. 1981. The Nutrient Requirements of Pigs. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Batterham, E. S. 1974. The effect of frequency of feeding on the utilization of free lysine by growing pigs. British Journal of Nutrition 31: 237–242.CrossRefGoogle ScholarPubMed
Batterham, E. S. and O'neill, G. H. 1978. The effect of frequency of feeding on the response by growing pigs to supplements of free lysine. British Journal of Nutrition 39: 265–270.CrossRefGoogle ScholarPubMed
Diestre, A. and Kempster, A. J. 1985. The estimation of pig carcass composition from different measurements with special reference to classification and grading. Animal Production 41: 383–391.Google Scholar
Fuller, M. F., Cadenhead, A. and Pennie, K. 1984. Effects of omitting lysine from diets conforming to Agricultural Research Council (1981) standards for pigs. Animal Production 39: 449–453.Google Scholar
Lawes Agricultural Trust. 1982. Genstat V, Mark 4·04. Rothamsted Experimental Station, Harpenden, Hertfordshire.Google Scholar
Meat and Livestock Commission 1971. Pig Carcase Classification. Meat and Livestock Commission. Bletchley, Milton Keynes.Google Scholar
Meat and Livestock Commission 1982. Commercial Pig Production Yearbook 1981. Meat and Livestock Commission, Bletchley, Milton Keynes.Google Scholar
Partridge, I. G., Low, A. G. and Keal, H. D. 1985. A note on the effect of feeding frequency on nitrogen use in growing boars given diets with varying levels of free lysine. Animal Production 40: 375–377.Google Scholar
Ridgeon, R. F. 1981. Pig Management Scheme Results for 1981. University of Cambridge.Google Scholar