A note on selection differential and generation length when generations overlap
- 1 February 1977
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Science
- Vol. 24 (1) , 109-112
- https://doi.org/10.1017/s0003356100039271
Abstract
The generation interval may be defined as the mean age of parents of all progeny born, or as the mean age of parents of only those progeny destined to be selected as replacements. If the mean age of parents of replacements is used, selection differentials must be calculated within parental age groups. If the mean age of parents of all progeny born is used, the selection differential contains a component due to disproportionate selection of replacements from different parental age groups.This publication has 2 references indexed in Scilit:
- Selection in a population with overlapping generationsAnimal Science, 1973
- Estimation of genetic gain in milk yield by selection in a closed herd of dairy cattleJournal of Genetics, 1950