Hostname: page-component-848d4c4894-xfwgj Total loading time: 0 Render date: 2024-06-14T22:52:30.687Z Has data issue: false hasContentIssue false
  • English
  • Français

Protein and lysine levels in practical rations

Published online by Cambridge University Press:  27 March 2009

R. Braude  and
P. Lerman
R. Braude
Affiliation:
National Institute for Research in Dairying, Shinfteld, Reading
P. Lerman
Affiliation:
A.R.C. Statistics Group, School of Agriculture, University of Cambridge
Get access Rights & Permissions [Opens in a new window]

Summary

A co-ordinated trial has been carried out at twenty-one centres to obtain information on the following problems: does the addition of synthetic lysine to a ‘standard’ ration, widely recommended and used in this country, beneficially influence the performance of growing pigs, and is the effect influenced by whether the source of supplementary protein is white fish meal or soya bean meal ?

In comparison with a ration providing levels of crude protein and lysine recommended in the A.R.C. ‘Nutrient Requirements of Pigs’, the ‘standard’ ration which contained less crude protein and total lysine, produced slightly lower performance, but about the same profit. The performance on the ‘standard’ ration could be improved by the addition of synthetic lysine, but such supplementation would not be profitable unless the cost of synthetic lysine was less than 21s./kg.

The response to added synthetic lysine was similar on rations in which the source of supplementary protein was either white fish meal or soya bean meal.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 3 , June 1970 , pp. 575 - 581
Copyright
Copyright © Cambridge University Press 1970

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). Nutrient Requirements of Farm Livestock, no. 3 Pigs. Technical Reviews and Summaries. 278 pp. London: H.M.S.O.Google Scholar
Braude, B., Lyon, M. R. & Rowell, J. G. (1965). Comparison of three practical rations for growing pigs. J. agric. Sci., Camb. 64, 87–91.CrossRefGoogle Scholar
Braude, R. & Rowell, J. G. (1957). Labour saving in feeding of fattening pigs. J. agric. Sci., Camb. 48, 322–5.CrossRefGoogle Scholar
Braude, R. & Rowell, J. G. (1968). Effects of simplifying feeding methods for growing pigs by using a single ration throughout and by providing cereal and supplement components unmixed. J. agric. Sci., Camb. 71, 271–5.CrossRefGoogle Scholar
Braude, R., Townsend, M. J., Harrington, G. & Rowell, J. G. (1958). A large-scale test of the effects of food restriction on the performance of fattening pigs. J. agric. Sci., Camb. 51, 208–17.CrossRefGoogle Scholar
Braude, R., Townsend, M. J. & Harrington, G. (1960). Effects of different protein contents in the rations of growing-fattening pigs. J. agric. Sci., Camb. 55, 175–81.CrossRefGoogle Scholar
Braude, R., Townsend, M. J., Harrington, G. & Rowell, J. G. (1961). A comparison of wheat and fino wheat offal in the rations of fattening pigs. J. agric. Sci., Camb. 57, 257–65.CrossRefGoogle Scholar
Braude, R., Townsend, M. J., Harrington, G. & Rowell, J. G. (1963). A comparison of feeding growing pigs once or twice daily. J. agric. Sci., Camb. 60, 389–91.CrossRefGoogle Scholar
Buck, S. F., Harrington, G. & Johnson, R. F. (1962). The prediction of lean percentage of pigs of bacon weight from carcass measurements. Anim. Prod. 4, 25–36.Google Scholar
Moore, S., Spackman, D. H. & Stein, W. H. (1958). Chromatography of amino acids on sulfonated polystyrene resins. Analyt. Chem. 30, 1185–90.CrossRefGoogle Scholar
Woodman, H. E. & Evans, R. E. (1940). The nutrition of the bacon pig. V. The minimum level of protein consistent with quick growth and satisfactory carcass quality (part II). J. agric. Sci., Camb. 30, 83–97.CrossRefGoogle Scholar
Woodman, H. E. & Evans, R. E. (1941). The nutrition of the bacon pig. VI. The minimum level of protein intake consistent with quick growth and satisfactory carcass quality (part III). J. agric. Sci., Camb. 11, 232–45.CrossRefGoogle Scholar
Woodman, H. E. & Evans, R. E. (1945). Nutrition of the bacon pig. XI. The minimum level of protein intake consistent with quick growth and satisfactory carcass quality (part XV). J. agric. Sci., Camb. 35, 133–49.CrossRefGoogle Scholar
Woodman, H. E. & Evans, R. E. (1948). Nutrition of the bacon pig. XIII. The minimum level of protein intake consistent with the maximum rate of growth (part V). J. agric. Sci., Camb. 38, 354–65.CrossRefGoogle Scholar