The Main Economic Characters Location In The Chromosome 4 Of Gushi And Anka Chicken Resource Group

In the process of cultivating quality chicken,chicken carcass traits and growth traits as an important indicator of breeding, breeders paying much attention for it. However, these traits are quantitative traits, its are Controled by two or more of the alleles, it are very difficult to improve breeding with the traditional way, and the emergence of molecular markers to address this issue provides a good opportunity. Gushi chicken is well-known native chicken breeds, meat with a delicious, slow growth, the characteristics of moderate fat content, while anka chicken is a fast-growing Broiler, they has a substantial difference in many traits. In this study, with Gushi-anka chicken crossing to establish the F2 resources to explore the growth traits and carcass traits of Quantitative trait lociIn this study, F2 generation resources produced by crossing with Gushi chicken– Anka chicken, using microsatellite markers. This generation hybrid chickens included 849 segregation progenies derived from seven families. 7 microsatellite markers were selected in the chromosome 4. this study examined the growth traits and carcass traits in the gene on chromosome 4 . Using 7 microsatellite markers of the F2 generation of resources for groups and calculate the number of alleles marking seat, gene frequency, heterozygosity and polymorphism information content,and growth traits and carcass traits positioning, the results are as follows:6 QTL of growth traits were located On the 4 chromosome in the existence, Including birth weight, two weeks body weight, Four weeks body weight, Four weeks chest depth, twelve weeks chest depth, Four weeks body slanting length. The Affect of birth weight ,Four weeks body weight , Four weeks chest depth , Four weeks body slanting length of OTL achieve significant level,And Four weeks body weight, twelve weeks chest depth of OTL achieve Very significant level. birth weight, two weeks body weight, Four weeks body weight of QTL were located at 75cM. Four weeks body slanting length of OTL achieve significant level,And Four weeks body weight, twelve weeks chest depth of OTL were located at 230cM.10 QTL of Carcass traits were located On the 4 chromosome in the existence Including wings weight, breast muscle weight, fat myenteric width, jejunum length, ileum length, head weight rate, claw weight rate, heart weight rate, gizzard weight rate, pancreas weight rate. The Affect of fat myenteric width,heart weight rate, gizzard weight rate, pancreas weight rate of OTL achieve significant level. The affect of wings weight ,head weight rate,claw weight rate of OTL achieve Very significant level. The Affect breast muscle weight of QTL were located at 97cM. The Affect wings weight of QTL were located at 76cM. The Affect fat myenteric width of QTL were located at 49cM. The Affect jejunum length of QTL were located at 205cM. The Affect ileum length of QTL were located at 219cM. The Affect head weight rate, claw weight rate pancreas weight rate of QTL were located at 230cM. The Affect heart weight rate of QTL were located at 62cM.