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The nutrition of the early-weaned calf VI. The effect of supplemental lysine and methionine on the utilisation of groundnut protein

Published online by Cambridge University Press:  02 September 2010

T. R. Preston ,
F. G. Whitelaw  and
N. A. MacLeod
T. R. Preston
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
F. G. Whitelaw
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
N. A. MacLeod
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
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Summary

1. Nitrogen balance studies have been conducted on eight early-weaned calves receiving four diets containing, respectively, groundnut meal, groundnut+lysine, groundnut+lysine+methionine and white-fish meal as the major protein source.

2. There were no significant differences between groundnut meal diets i n any of the measurements examined. On the fish meal diet all measures of nitrogen retention tended to be higher than the corresponding values for groundnut meals.

3. Daily live-weight gains were significantly higher on the fish meal diet than on any of the groundnut diets (P<0·05).

4. It is suggested that the supplementary amino acids, being highly soluble, were rapidly deaminated by rumen micro-organisms.

Type
Research Article
Information
Animal Production , Volume 6 , Issue 1 , February 1964 , pp. 17 - 24
Copyright
Copyright © British Society of Animal Science 1964

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References

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