QTL mapping for teat number in an Iberian-by-Meishan pig intercross
Summary The aim of this study was to investigate chromosomal regions affecting the number of teats in pigs and possible epistatic interactions between the identified quantitative trait loci (QTL). An experimental F2 cross between Iberian and Chinese Meishan lines was used for this purpose. A genomic...
Saved in:
Published in | Animal genetics Vol. 36; no. 6; pp. 490 - 496 |
---|---|
Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Science Ltd
01.12.2005
Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Summary
The aim of this study was to investigate chromosomal regions affecting the number of teats in pigs and possible epistatic interactions between the identified quantitative trait loci (QTL). An experimental F2 cross between Iberian and Chinese Meishan lines was used for this purpose. A genomic scan was conducted with 117 markers covering the 18 porcine autosomes. Linkage analyses were performed by interval mapping using an animal model to estimate QTL and additive polygenic effects. Complementary analyses with models fitting two QTL were also carried out. The results showed three genomewide significant QTL mapping on chromosomes 5, 10 and 12, whose joint action control up to 30% of the phenotypic variance of the trait. Meishan alleles had a positive additive effect on teat number, and a positive‐additive × additive‐epistatic interaction was detected between QTL on chromosomes 10 and 12. |
---|---|
Bibliography: | ark:/67375/WNG-QG7L7QGP-2 istex:DF1CEE67162C277FBC69AC4B50011F7B207F0CC8 ArticleID:AGE1358 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0268-9146 1365-2052 |
DOI: | 10.1111/j.1365-2052.2005.01358.x |