Journal
ANIMAL REPRODUCTION SCIENCE
Volume 114, Issue 1-3, Pages 210-218Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.anireprosci.2008.08.008
Keywords
QTL; Semen quality; Ejaculation; Pig
Funding
- National 973 program of China [2006CB102100]
- National Natural Science Foundation of China [30425045]
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To identify quantitative trait loci (QTL) for traits related to semen and ejaculation, phenotype data including semen volume, sperm concentration, total sperm per ejaculate, sperm motility, sperm abnormality rate, semen pH value, ejaculation times and ejaculation duration were measured on 206 F-2 boar at 240 days in a White Duroc x Erhualian intercross. A genome-wide scan was performed and the entire White Duroc x Erhualian intercross was genotyped for 183 microsatellite markers covering the whole pig genome. QTL analysis was performed using a composite regression interval mapping method via QTLExpress. A total of 18 QTL were detected, including 4 genome-wide significant QTL each for semen pH on pig chromosome (SSC) 2 and SSC12, for semen volume on SSC15, and for ejaculation times on SSC17. Fourteen suggestive QTL were found on SSC1, 2,3, 4,6,9,17 and 18. To our knowledge, this is the first report about the QTL for semen and ejaculation traits in pigs, providing a start point to decipher the genetic basis of these complex traits. (c) 2008 Elsevier B.V. All rights reserved.
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