Abstract: The study was aimed to investigate the characteristics of Hyperpigmentation of the Visceral Peritoneum（HVP）in nine yellow⁃feather broilers. In this study，we analyzed the relationship between HVP and body weight（BW），Shank circumference（SC），and sex in nine 21⁃day⁃old yellow⁃feathered broiler lines（n=6 223）. The results showed that there were significant differences in HVP traits among different strains in different population genetic backgrounds（P<0.05）. Notably local chicken exhibited a higher proportion of peritoneal black level 3 compared to specialized breeding lines. Under the same population genetic background，eight strains showed highly significant differences（P<0.01）in HVP，body weight，and Shank circumference，with lower BW and SC in the peritoneal black grade 3. Additionally，when males and females were analyzed separately，the HVP level was higher in the female chickens（P<0.01）. The findings from our experiment suggested that selective breeding for lower HVP levels should prioritize local chicken breeds and hen groups，which provide a basis for future yellow⁃feathered broiler breeding and production.

Key words: Body weight, Hyperpigmentation of the visceral peritoneum, Shank circumference, Yellow ?feathered chicken

摘要： 研究黄羽肉鸡不同品系资源的腹膜色素过度沉积性状（Hyperpigmentation of the Vis? ceral Peritoneum , HVP）种质特性，对比分析不同品系黄羽肉鸡HVP与体重、胫围及性别的关 系，为筛选出低HVP黄羽肉鸡优质种质资源提供依据。该研究以9个21日龄的黄羽肉鸡品系 资源（n=6223）为研究对象，对比不同品系间及公母群体间的HVP差异，同时分析HVP与体重、 胫围之间的相关性。结果表明，不同群体遗传背景下，不同品系黄羽肉鸡HVP性状等级存在 显著差异（P<0.05），地方鸡群3级黑腹膜过度沉积个体比例高于专门化培育品系。公母鸡群的 HVP也存在差异，母鸡中腹膜色素过度沉积等级更高（P<0.01）。相同群体遗传背景下，有8个 品系黄羽肉鸡的HVP与体重、胫围呈极显著相关（P<0.01），其中3级黑腹膜过度沉积的鸡群体 重与胫围较低；这提示我们，不同品系HVP的选育采用不同策略，地方鸡群体更应重视低HVP 定向选育，为推广到更多的黄羽肉鸡遗传改良和新品种培育中提供参考依据。

关键词: 黄羽肉鸡, 腹膜色素过度沉积, 体重, 胫围