[Genetic analysis of important growth trait based on F-2 resource population in chicken].
A three-generation of chicken population is being constructed for mapping multi-economical trait loci where three extremely divergent breeds, including a broiler breed(A), a layer breed(B) and white-silk chicken(C) were employed for reciprocal cross. Four cross combinations of A Male x C Female, C Male x A Female; B Male x C Female, C Male x B Female were performed with 277 individuals in total parental population. According to the statistic analysis for growth trait, difference between parental lines is significant, F2 generation attains great variation. Correlations among body weight and daily gain traits are significant and relative coefficient are moderate or high. The number at QTL loci is expected to be no more than 10, and based on the theoretical computation the sample size of this resource population is sufficient for QTL mapping.
Deng
X M
XM
National Laboratory for Agrobiotechnology, China Agricultural University, Beijing 100094, China.
Li
J Y
JY
Li
N
N
Wu
C X
CX
D000818:Animals; D002645:Chickens / Q000235:genetics*; D002874:Chromosome Mapping; D005260:Female; D006128:Growth; D008297:Male; D019655:Quantitative Trait, Heritable