Flock health indicators and Campylobacter spp. in commercial housed broilers reared in Great Britain

被引:48
作者
Bull, Stephanie A. [1 ]
Thomas, Alastair
Humphrey, Thomas
Ellis-Iversen, Johanne [2 ]
Cook, Alasdair J. [2 ]
Lovell, Roger
Jorgensen, Frieda [1 ]
机构
[1] Univ Bristol, Sch Clin Vet Sci, Hlth Protect Agcy, Foodborne Zoonoses Unit, Bristol BS40 5DU, Avon, England
[2] Vet Lab Agcy, Ctr Epidemiol & Risk Anal, Addlestone KT15 3NB, Surrey, England
关键词
D O I
10.1128/AEM.00462-08
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
This study investigated the relationship between flock health and Campylobacter infection of housed commercial broilers in Great Britain. Thirty ceca were collected at slaughter from batches of broilers from 789 flocks, at either full or partial depopulation, between December 2003 and March 2006 and examined individually for Campylobacter by direct plating onto selective media. Management and health data were collected from each flock and included information on mortality or culling during rearing, the number of birds rejected for infectious or noninfectious causes at slaughter, the proportion of birds with digital dermatitis (also termed hock burn), and other general characteristics of the flock. Campylobacter spp. were isolated from 280 (35%) flocks. The relationship between bird health and welfare and Campylobacter status of flocks was assessed using random-effects logistic regression models, adjusting for region, month, year, and rearing regime. Campylobacter-positive batches of ceca were associated with higher levels of rejection due to infection (odds ratio [OR], 1.5; 95% confidence interval [CI(95%)], 0.98 to 2.30) and digital dermatitis (OR, 2.08; CI(95%), 1.20 to 3.61). Furthermore, higher levels of these conditions were also associated with the highest-level category of within-flock Campylobacter prevalence (70 to 100%). These results could indicate that improving health and welfare may also reduce Campylobacter in broilers.
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页码:5408 / 5413
页数:6
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