Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
Poult Sci. 2009 Dec;88(12):2491-5. doi: 10.3382/ps.2009-00203.
As a result of welfare considerations, conventional cage systems will be banned in the European Union from 2012 onward. Currently, there is limited information on the level of contamination with zoonotic pathogens related to the laying hen housing system. Therefore, 2 studies were designed to investigate the effect of the housing system on colonization of layers with Salmonella. In both studies, layers were housed in 3 different housing systems: a conventional cage system, a furnished cage, and an aviary. At 18 wk of age, all birds were orally inoculated with Salmonella Enteritidis. Shedding and colonization were measured at regular time points. The results did not show an increased risk for alternative housing systems compared with the conventional battery cage system. In contrast, in one study, a faster decline in shedding was noted for layers housed in the alternative cage systems in comparison with the conventional cage system. This study does not give indications that housing layers in alternative systems will yield a risk for increased Salmonella contamination.
出于福利考虑，欧盟将从 2012 年起禁止使用传统笼养系统。目前，有关与蛋鸡饲养系统相关的人畜共患病病原体污染水平的信息有限。因此，设计了 2 项研究来调查饲养系统对沙门氏菌定植鸡群的影响。在这 2 项研究中，鸡群分别饲养在 3 种不同的饲养系统中：传统笼养系统、带家具的笼养系统和开放式鸡舍。在 18 周龄时，所有鸡只均经口接种肠炎沙门氏菌。定期检测鸡只的粪便排出和定植情况。结果并未显示替代饲养系统比传统的笼养系统具有更高的风险。相反，在一项研究中，与传统笼养系统相比，在替代笼养系统中饲养的鸡群的粪便排出量下降更快。这项研究并未表明在替代系统中饲养鸡群会增加沙门氏菌污染的风险。
