Hostname: page-component-6bf8c574d5-qdpjg Total loading time: 0 Render date: 2025-02-25T15:09:52.202Z Has data issue: false hasContentIssue false
  • English
  • Français

An experimental check on an index combining individual and family measurements

Published online by Cambridge University Press:  02 September 2010

E. Avalos  and
W. G. Hill
E. Avalos
Affiliation:
Institute of Animal Genetics, West Mains Road, Edinburgh EH9 3JN
W. G. Hill
Affiliation:
Institute of Animal Genetics, West Mains Road, Edinburgh EH9 3JN
Get access

Abstract

Using a pedigreed population of Drosophila melanogaster, various indices of individual and full-sib family information were compared for predicting progeny performance for bristle score. On average, the indices were 14% more accurate than individual performance or family mean taken separately. Index weights computed a priori from data solely on the parent's generation gave an index almost as accurate as that computed a posteriori by multiple regression of performance of progeny on parents and parent's full sibs. The value of the index was therefore as predicted from theory.

Type
Research Article
Information
Animal Production , Volume 33 , Issue 1 , August 1981 , pp. 1 - 5
Copyright
Copyright © British Society of Animal Science 1981

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

Bulmer, M. G. 1971. The effect of selection on genetic variability. Am. Nat. 105: 201–211.Google Scholar
Dempflé, L. 1975. A note on increasing the limit of selection through selection within families. Genet. Res. 24: 127–135.Google Scholar
Guiard, V. and Herrendorfor, G. 1977. Estimation of the genetic correlation coefficient by half sib analysis if the characters are measured on different offsprings. Biometr. J. 19: 31–36.Google Scholar
Lush, J. L. 1947. Family merit and individual merit as bases for selection. Am. Nat. 81: 241–261; 362–379.CrossRefGoogle Scholar
Robertson, A. 1977. The effect of selection on the estimation of genetic parameters. Z. Tierziicht. ZiichtBiol. 94: 131–135.CrossRefGoogle Scholar
Sales, Jill and Hill, W. G. 1976. Effect of sampling errors on efficiency of selection indices. 1. Use of information from relatives for single trait improvement. Anim. Prod. 22: 1–17.Google Scholar
Sheridan, A. K., Frankham, R., Jones, L. P., Rathie, K. A. and Barker, J. S. F. 1968. Partitioning of variance and estimation of genetic parameters for various bristle number characters of Drosophila melanogaster. Theor. Appl. Genet. 38: 179–187.Google Scholar
Wilson, S. P. 1974. An experimental comparison of individual, family and combination selection. Genetics, Princeton 76: 823–836.Google Scholar