中文摘要：

本研究对CAU—BC蛋品质资源群体的各个测定性状进行了表型差异性比较、遗传力、QTLL定位所需样本数估计等遗传分析，旨在为鸡蛋品质各个性状的QTL定位工作提供一定的理论依据和指导。结果表明：R代2个品种各蛋品质性状皆存在极显著差异；各性状在F：代分离群体中为多峰分布；蛋型指数、哈氏单位、蛋壳厚度这3个性状计算所得主效基因指数相对较大，而蛋重、蛋壳强度、蛋壳颜色这3个性状主效基因指数相对较小：蛋壳强度、比重的遗传力分别为0．25和0．27，蛋形指数、蛋壳重、哈氏单位、蛋壳颜色、蛋白重、蛋壳厚度、蛋重的遗传力依次在0．35～0．49，蛋黄重的遗传力为0．68。结合本研究所计算出的遗传力，估计蛋品质QTL定位研究所需群体规模应该在34—324即可满足需要．本资源家系可用个体超过1000个．大大超过了定位这些性状相关QTL所需的最低要求，可望为定位工作提供足够的资源。

英文摘要：

In order to get some direction and theoretical basement in the field of QTL identify for egg quality traits, ge- netic analysis was conducted to the CAU-BC resource population. Egg quality traits were measured and their pheno- typic differences were compared, the heritability, estimation of the least number of samples required for identification of QTL was worked out, too.The results showed that FO of the two breed were there significant differences in egg quali- ty traits and all traits in the F2 separate population are multi-peak distribution. The bias of their means between the FO and F2 generation suggest big major gene effects of these three traits： egg-shape index, Haugh unit, eggshell thickness. Heritability of Eggshell strength and the egg gravity was 0.25 and 0.27, respectively. Heritability of egg shape index, egg shell weight, Haugh unit, eggshell color, egg gravity, eggshell thickness and egg weight were between 0.35 to 0.49 . Heritability of egg yolk weight was 0.68. Base on the heritability estimation, population size which need- ed for conduct a QTL identification reasearch was predicted between 34-324.The number of available individual of this rescource family is more than 1000, which is greatly exceeded the minimum requirement to locate the QTL of these relative traits,that means this resource family will provide sufficient information for the QTL identification works.