AI Article Synopsis
- Investigated HPAI H5N1 outbreak in Nigeria from 2006 to 2008, focusing on layers, pullets, cockerels, and broilers with a total of 153 affected farms.
- Found high mortality rates across different chicken types: 11.11% in layers, 26.84% in pullets, 45.51% in cockerels, and 73.92% in broilers, affecting 939,620 layers and thousands of other birds across 18 states.
- Examined 316 carcasses showing severe clinical and pathological findings in multiple body systems, with more severe and frequent lesions in carcasses regardless of type.
Article Abstract
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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4897471 | PMC |
| http://dx.doi.org/10.1155/2014/415418 | DOI Listing |
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