| Literature DB >> 11583418 |
H Hirooka1, D J de Koning, B Harlizius, J A van Arendonk, A P Rattink, M A Groenen, E W Brascamp, H Bovenhuis.
Abstract
A whole-genome scan was conducted using 132 microsatellite markers to identify chromosomal regions that have an effect on teat number. For this purpose, an experimental cross between Chinese Meishan pigs and five commercial Dutch pig lines was used. Linkage analyses were performed using interval mapping by regression under line cross models including a test for imprinting effects. The whole-genome scan revealed highly significant evidence for three quantitative trait loci (QTL) affecting teat number, of which two were imprinted. Paternally expressed (i.e., maternally imprinted) QTL were found on chromosomes 2 and 12. A Mendelian expressed QTL was found on chromosome 10. The estimated additive effects showed that, for the QTL on chromosomes 10 and 12, the Meishan allele had a positive effect on teat number, but, for the QTL on chromosome 2, the Meishan allele had a negative effect on teat number. This study shows that imprinting may play an important role in the expression of teat number.Entities:
Mesh：
Year: 2001 PMID： 11583418 DOI： 10.2527/2001.7992320x
Source DB: PubMed Journal: J Anim Sci ISSN： 0021-8812 Impact factor: 3.159