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首页> 外文期刊>ISRN Veterinary Science >Mortality and Pathology Associated with Highly Pathogenic Avian Influenza H5N1 Outbreaks in Commercial Poultry Production Systems in Nigeria
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Mortality and Pathology Associated with Highly Pathogenic Avian Influenza H5N1 Outbreaks in Commercial Poultry Production Systems in Nigeria

机译：尼日利亚商业家禽生产系统中高度致病性禽流感H5N1爆发的死亡率和病理

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Commercial layer-type, pullet, cockerel, and broiler chicken flocks infected with highly pathogenic avian influenza (HPAI) H5N1 in Nigeria between 2006 and 2008 were investigated for morbidity, mortality, and pathology. Of the one hundred and fifty-three (153) farms confirmed with HPAI infection, one hundred and twenty-seven (127) were layer-type farms, nine (9) were pullet and broiler farms each, and eight (8) were cockerel rearing farms. This study revealed the morbidity and mortality of a total of 939,620 commercial layer chickens, 16,421 pullets, 3,109 cockerels, and 6,433 broilers. Mortality rates were 11.11% in commercial layers, 26.84% in pullets, 45.51% in cockerels, and 73.92% in broilers in a total of eighteen (18) states and the Federal Capital Territory, Abuja. A total of 316 carcasses were examined of which 248 were commercial layer, 25 were pullet, 14 were cockerel, and 29 were broiler. Main clinical and pathologic findings were observed in the nervous, circulatory, respiratory, integumentary, musculoskeletal, hemopoietic, gastrointestinal, and reproductive systems and, occasionally, lesions were generally nonspecific and multisystemic. Lesions occurred more frequently, severely, and in most of the carcasses examined, irrespective of chicken type.
机译：研究人员调查了2006年至2008年间在尼日利亚感染高致病性禽流感（HPAI）H5N1的商业蛋鸡，小鸡，小鸡和肉鸡的鸡群的发病率，死亡率和病理情况。在确认有HPAI感染的一百三十三（153）个农场中，一百二十七（127）个是分层型农场，九（9）个是小鸡和肉鸡农场，八（8）是小公鸡饲养农场。这项研究揭示了总共939,620头商业蛋鸡，16,421头小鸡，3,109头公鸡和6,433羽肉鸡的发病率和死亡率。在总共十八（18）个州和阿布贾联邦首都辖区中，商业蛋鸡的死亡率为11.11％，仔鸡的死亡率为26.84％，公鸡的死亡率为45.51％，肉鸡的死亡率为73.92％。总共检查了316具cas体，其中商品层248具，小母鸡25具，小鸡14具，肉鸡29具。在神经，循环系统，呼吸系统，皮肤外系统，肌肉骨骼系统，造血系统，胃肠系统和生殖系统中观察到了主要的临床和病理学发现，并且病变通常是非特异性的和多系统的。无论鸡的类型如何，在大多数检查的屠体中，皮损的发生频率都更高，更严重。

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