Summary
This paper examines the relationship of economic weights, a i, with a general economic value surface. It is inferred that the a i may vary across the population, as they can depend on the mean vector for the characters of interest. It is shown how these ideas extend to provide simple mechanisms for controlled selection. The problem of estimation is raised, and it is suggested that the procedures can be efficiently implemented, even in small populations, by a system of ‘internal’ parameter estimation. This makes the entire selection programme independent of externally generated estimates of genetic parameters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Brascamp EW (1984) Selection indices with constraints. Anim Breed Abstr 52:645–654
Cochran WG (1950) Improvement by means of selection. Proc 2nd Berkeley Symp Math Statist Prob. University of California Press, Berkeley, pp 449–470
Falconer DS (1983) Introduction to quantitative genetics, 2nd edn. Longman, London
Rao CR (1973) Linear statistical inference and its applications, 2nd edn. Wiley, New York
Tallis GM, Leppard P (1988) Internal estimation and controlled selection with applications to sheep. Department of Statistics Technical Paper No. 24
Turner HN, Young SSY (1969) Quantitative selection in sheep breeding. Macmillan, Australia
Author information
Authors and Affiliations
Additional information
Communicated by J. S. F. Barker
Rights and permissions
About this article
Cite this article
Tallis, G.M., Leppard, P. Internal estimation and controlled selection with applications to sheep. Theoret. Appl. Genetics 78, 463–472 (1989). https://doi.org/10.1007/BF00290829
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00290829