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Intensive beef production 5. The effect of different sources of protein on nitrogen retention

Published online by Cambridge University Press:  02 September 2010

H. B. Bowers ,
T. R. Preston ,
N. A. MacLeod ,
I. McDonald  and
Euphemia B. Philip
H. B. Bowers
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
T. R. Preston
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
N. A. MacLeod
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
I. McDonald
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
Euphemia B. Philip
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
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Summary

1. Nitrogen balance studies were made on 8 Friesian steers given allconcentrate diets containing fish meal, soya bean meal, groundnut meal or cottonseed meal.

2. There were no differences in nitrogen retention but voluntary feed intake was significantly lower on the fish meal diet.

3. Adjustment of nitrogen retention to constant dry matter intake resulted in significantly higher values for the diets containing fish meal and cottonseed meal than for the others.

4. Rumen pH, rumen ammonia and blood urea were all much lower on the fish meal diet.

Type
Research Article
Information
Animal Production , Volume 7 , Issue 3 , October 1965 , pp. 303 - 308
Copyright
Copyright © British Society of Animal Science 1965

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References

REFERENCES

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