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江西地方鸡禽白血病流行与净化现状

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摘要 为了解江西地方鸡禽白血病病毒(Avian leukosis virus,ALV)分子流行情况,2016—2023年对江西省8个地方品种鸡进行样品采集,通过对74224份血浆样品病毒分离与遗传进化分析。结果显示:J亚群ALV(ALV-J)和K亚群ALV(ALV-K)是鸡群中主要的ALV亚群,但致病性强的ALV-J阳性率及其在分离株中的占比逐年下降,致病性较弱的K亚群毒株在分离株中占比逐年递增,尤其是在进行ALV净化的鸡场中,ALV-J阳性率明显下降,表明禽白血病净化对控制ALV的流行有重要意义。在参照国际禽白血病净化“金标准”的基础上,结合江西地方品种鸡的特点,制定ALV净化方案,并在2018—2023年对3个地方鸡保种核心群开展了禽白血病净化,经过3~5个世代的ALV净化,各品种鸡群ALV阳性率均显著下降,净化效果明显。
出处 《中国畜禽种业》 2024年第2期62-68,共7页 The Chinese Livestock and Poultry Breeding
基金 江西省家禽产业技术体系(JXARS-09) 丝羽乌骨鸡配套系选育(2022JXCQZY04) 江西现代农业科研协同创新专项项目(JXXTCXQN202101) 江西现代农业科研协同创新项目(JXXTCXBSJJ202209)。
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