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Treatment comparisons in grazing trials using the animal as experimental unit

Published online by Cambridge University Press:  27 March 2009

D. Conniffe
D. Conniffe
Affiliation:
Statistics Department, An Foras Taluntais, 19 Sandytnount Ave., Dublin 4
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Summary

Although it is not always valid to regard ‘within herd variation’ as a true measure of experimental error there are occasions when this may be the only feasible measurement. The effect is considered of regarding the animal as the experimental unit on the estimation of the ratio of production of two treatments and an approximate variance for the ratio is obtained. The conditions under which the approximation is valid are considered.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 77 , Issue 2 , October 1971 , pp. 227 - 235
Copyright
Copyright © Cambridge University Press 1971

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References

REFERENCES

Conniffe, D., Browne, D. & Walshe, M. J. (1970). Experimental Design for grazing trials. J. agric. Sci., Camb. 74, 339–42.CrossRefGoogle Scholar
Morley, F. H. W. & Spedding, O. R. W. (1968). Agricultural Systems and grazing experiments. Herb. Abstr. 38, 279–87.Google Scholar