PMID- 19211515 OWN - NLM STAT- MEDLINE DCOM- 20090407 LR - 20200314 IS - 0032-5791 (Print) IS - 0032-5791 (Linking) VI - 88 IP - 3 DP - 2009 Mar TI - Genetic mapping of quantitative trait loci affecting growth and carcass traits in F2 intercross chickens. PG - 477-82 LID - 10.3382/ps.2008-00296 [doi] AB - We constructed a chicken F(2) resource population to facilitate the genetic improvement of economically important traits, particularly growth and carcass traits. An F(2) population comprising 240 chickens obtained by crossing a Shamo (lean, lightweight Japanese native breed) male and White Plymouth Rock breed (fat, heavyweight broiler) females was measured for BW, carcass weight (CW), abdominal fat weight (AFW), breast muscle weight (BMW), and thigh muscle weight (TMW) and was used for genome-wide linkage and QTL analysis, using a total of 240 microsatellite markers. A total of 14 QTL were detected at a 5% chromosome-wide level, and 7 QTL were significant at a 5% experiment-wide level for the traits evaluated in the F(2) population. For growth traits, significant and suggestive QTL affecting BW (measured at 6 and 9 wk) and average daily gain were identified on similar regions of chromosomes 1 and 3. For carcass traits, the QTL effects on CW were detected on chromosomes 1 and 3, with the greatest F-ratio of 15.0 being obtained for CW on chromosome 3. Quantitative trait loci positions affecting BMW and TMW were not detected at the same loci as those detected for BMW percentage of CW and TMW percentage of CW. For AFW, QTL positions were detected at the same loci as those detected for AFW percentage of CW. The present study identified significant QTL affecting BW, CW, and AFW. FAU - Uemoto, Y AU - Uemoto Y AD - National Livestock Breeding Center, Nishigo, Fukushima 961-8511, Japan. y0uemoto@nlbc.go.jp FAU - Sato, S AU - Sato S FAU - Odawara, S AU - Odawara S FAU - Nokata, H AU - Nokata H FAU - Oyamada, Y AU - Oyamada Y FAU - Taguchi, Y AU - Taguchi Y FAU - Yanai, S AU - Yanai S FAU - Sasaki, O AU - Sasaki O FAU - Takahashi, H AU - Takahashi H FAU - Nirasawa, K AU - Nirasawa K FAU - Kobayashi, E AU - Kobayashi E LA - eng PT - Journal Article PL - England TA - Poult Sci JT - Poultry science JID - 0401150 SB - IM MH - Animals MH - Body Composition/*genetics MH - Breeding MH - Chickens/*genetics/*growth & development/physiology MH - *Chromosome Mapping MH - *Crosses, Genetic MH - Female MH - Genotype MH - Male MH - Quantitative Trait Loci/*genetics EDAT- 2009/02/13 09:00 MHDA- 2009/04/08 09:00 CRDT- 2009/02/13 09:00 PHST- 2009/02/13 09:00 [entrez] PHST- 2009/02/13 09:00 [pubmed] PHST- 2009/04/08 09:00 [medline] AID - S0032-5791(19)40093-X [pii] AID - 10.3382/ps.2008-00296 [doi] PST - ppublish SO - Poult Sci. 2009 Mar;88(3):477-82. doi: 10.3382/ps.2008-00296.