Genetic aspects of Booroola introgression in breeding programs

Title
Genetic aspects of Booroola introgression in breeding programs
Publication Date
2009
Author(s)
Van Der Werf, Julius H
( author )
OrcID: https://orcid.org/0000-0003-2512-1696
Email: jvanderw@une.edu.au
UNE Id une-id:jvanderw
Editor
Editor(s): S W Walkden-Brown, JHJ van der Werf, C Nimbkar and VS Gupta
Type of document
Book Chapter
Language
en
Entity Type
Publication
Publisher
Australian Centre for International Agricultural Research (ACIAR)
Place of publication
Canberra, Australia
Edition
1
Series
ACIAR Proceedings
UNE publication id
une:9485
Abstract
This paper describes the genetic aspects of introgressing a major gene from a donor breed into a commercial recipient breed. The efficiency of the introgression process can be derived from the merit of the introgression population versus that of the commercial population at a certain time following the commencement of the program. The relative merit depends not only on the effect of the major gene and the genetic difference between the donor breed and the commercial breed, but also on the rate of genetic gain in the commercial breed and the genetic lag of the introgressed breed. Generally, several generations of backcrossing are required to recover the recipient genome. The efficiency of marker-assisted introgression is compared to introgression without markers. This difference can be small for traits that are easy to measure but is larger for reproduction traits, as in the case of Booroola. Various introgression strategies are compared for efficiency, including strategies for efficient dissemination of improved nucleus animals into the wider population.
Link
Citation
Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10th - 12th November, 2008, p. 160-169
ISBN
9781921615566
9781921615559
Start page
160
End page
169

Files:

NameSizeformatDescriptionLink