Black-bone chicken is one kind of unique domestic chicken breeds and widely spreads in China.

乌骨鸡是我国独特的家禽品种，是分布广泛的古老鸡种之一。

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The experiment investigated the circulating immune complexes of healthy duck, chicken, black-bone chicken and pigeon.

本实验主要对健康家鸭、家鸡、乌鸡和鸽子这四种家禽的血清免疫复合物进行研究。

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Black-bone chicken is a unique domestic chicken breed in China, and the Silkie has been admitted as an International Standard Breeds because of its unique appearance.

乌骨鸡是我国独特的家禽品种，丝羽乌骨鸡更以其特有的外貌特征而名列国际标准品种之一，国内长期以来都将乌骨鸡视为药用品种。

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