PMID- 12143309 OWN - NLM STAT- MEDLINE DCOM- 20020813 LR - 20061115 IS - 0379-4172 (Print) IS - 0379-4172 (Linking) VI - 29 IP - 7 DP - 2002 Jul TI - [Detection of quantitative trait loci for growth in large white x Meishan intercross]. PG - 607-11 AB - The development of molecular biology techniques and the application of these techniques to farm animals have progressed rapidly and have opened new vistas for investigators wishing to identify genes that control quantitative traits. Now that a comprehensive map has been developed for the porcine genome, genomic scans to detect quantitative trait loci (QTL) can begin. In order to locate the genetic regions in the swine genome that are responsible for economically important traits, a resource population was developed by intercross with three Large White and seven Meishan pigs. In subsequent generations, 66 F2 offsprings in 2000 were recorded for four growth traits including birth weight (BWT), body weight at 60 day (WT60), average daily gain from birth to 60 day (ADG1) and average daily gain from 60 day to the end of test (ADG2), and genotyped for 48 microsatellite markers spanning six chromosomes. Association analyses were performed using interval mapping by regression under an outbred line-cross model on chromosomes 1, 2, 3, 4, 6 and 7. The F threshold values were determined by permutation. A total of 12 QTL were detected at suggestive level for the four traits evaluated in this study. Of the 12 suggestive QTL, 3 and 1 QTL were significant at the chromosome-wise and genome-wise levels. There was a QTL for ADG2 at genome-wide level on chromosome 4 explained additive variance 2.19%. A chromosome-wide QTL affecting ADG1 and WT60 were detected on chromosomes 2 and 1 explained additive variance 0.01% and 26.01%, respectively. FAU - Su, Yu-Hong AU - Su YH AD - College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China. yuhongsu652@163.net FAU - Xiong, Yuan-Zhu AU - Xiong YZ FAU - Zhang, Qin AU - Zhang Q FAU - Jiang, Si-Wen AU - Jiang SW FAU - Yu, Li AU - Yu L FAU - Lei, Ming-Gang AU - Lei MG FAU - Zheng, Rong AU - Zheng R FAU - Deng, Chang-Yan AU - Deng CY LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Yi Chuan Xue Bao JT - Yi chuan xue bao = Acta genetica Sinica JID - 7900784 SB - IM MH - Animals MH - *Chromosome Mapping MH - *Crosses, Genetic MH - Growth MH - *Quantitative Trait, Heritable MH - Swine/*genetics EDAT- 2002/07/30 10:00 MHDA- 2002/08/14 10:01 CRDT- 2002/07/30 10:00 PHST- 2002/07/30 10:00 [pubmed] PHST- 2002/08/14 10:01 [medline] PHST- 2002/07/30 10:00 [entrez] PST - ppublish SO - Yi Chuan Xue Bao. 2002 Jul;29(7):607-11.