Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-03T02:02:47.520Z Has data issue: false hasContentIssue false

Experimental design for grazing trials

Published online by Cambridge University Press:  27 March 2009

D. Conniffe
Affiliation:
An Foras Taluntais, Statistics Department, 19 Sandymount Avenue, Dublin 4
D. Browne
Affiliation:
An Foras Taluntais, Moorepark, Fermoy, Go. Cork
M. J. Walshe
Affiliation:
An Foras Taluntais, Moorepark, Fermoy, Go. Cork

Summary

Animal production in grazing experiments depends both on treatment and on stocking rate. Production at optimum stocking rate is the only valid measure of treatment effect and treatment comparisons should be based on this criterion. Since optimum stocking rates are unknown these comparisons cannot be made directly, instead they must be inferred from the results obtained with the stocking rates actually used. This requires that some form of production stocking rate relationship be postulated. This paper suggests a form for this relationship and considers its implications on experimental design and particularly on the number of stocking rates per treatment.

Type
Research Article
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

Bbowne, D. (1968). Unpublished data.Google Scholar
Finney, D. J. (1964). Statistical Method in Biological Assay. London: Griffin.Google Scholar
Mokley, F. H. W.Spedding, C. R. W. (1968). Agricultural systems and grazing experiments. Herb. Abstr. 38, 279–87.Google Scholar
Mott, G. O. (1960). Grazing pressure and the measurement of pasture production. Proc. 8th Int. Orassld Oongr. pp. 606–11.Google Scholar
Owen, J. B.Ridgman, W. J. (1968). The design and interpretation of experiments to study animal production from grazed pasture. J. agric. Sci. Camb.' 71' 327–35.Google Scholar