Hostname: page-component-7b7567c8c-jswmv Total loading time: 0 Render date: 2026-11-15T14:11:35.090Z Has data issue: false hasContentIssue false
  • English
  • Français

Constrained selection by independent culling levels

Published online by Cambridge University Press:  02 September 2010

R. Evans
R. Evans
Affiliation:
Division of Animal Production, CSIRO, PO Box 239, Blacktown, NSW 2148, Australia
Get access

Abstract

The problem of applying a linear constraint on expected selection responses in a two-character independent culling levels scheme is investigated. A general equation is derived, the solutions of which specify the culling levels satisfying the constraint applied. Examples are given to demonstrate how different constraints can be applied by transforming one or more of the characters under selection.

Information

Type
Research Article
Information
Animal Production , Volume 30 , Issue 1 , February 1980, pp. 79 - 83
Copyright
Copyright © British Society of Animal Science 1980

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

Birnbaum, Z. W. and Meyer, P. L. 1953. On the effect of truncation in some or all co-ordinates of a multinomial population. J. Indian Soc. agric. Statist. 5: 17–28.Google Scholar
Brown, G. H. 1968. Some applications of correlation models to animal breeding problems. M.Sc. Thesis, Univ. N.S.W.Google Scholar
Hazel, L. N. and Lush, J. L. 1942. The efficiency of three methods of selection. J. Hered. 33: 393–399.CrossRefGoogle Scholar
James, J. W. 1968. Index selection with restrictions. Biometrics 24: 1015–1018.CrossRefGoogle Scholar
Kempthorne, O. and Nordskog, A. W. 1959. Restricted selection indices. Biometrics 15: 10–19.CrossRefGoogle Scholar
Tallis, G. M. 1962. A selection index for optimum genotype. Biometrics 18: 120–122.CrossRefGoogle Scholar
Thomas, G. B. 1961. Calculus and Analytic Geometry. Addison-Wesley, Reading, Mass.Google Scholar
Turner, Helen N. and Young, S. S. Y. 1969. Quantitative Genetics in Sheep Breeding. Macmillan, Melbourne.Google Scholar
Yamada, Y., Yokouchi, K. and Nishida, A. 1975. Selection index when genetic gains of individual traits are of primary concern. Jap. J. Genet. 50: 33–41.CrossRefGoogle Scholar
Young, S. S. Y. 1961. A further examination of the relative efficiency of three methods of selection for genetic gains under less-restricted conditions. Genet. Res. 2: 106–121.CrossRefGoogle Scholar
Young, S. S. Y. and Weiler, H. 1960. Selection for two correlated traits by independent culling levels. J. Genet. 57: 329–338.CrossRefGoogle Scholar