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首页> 外文期刊>Food microbiology >The effect of abattoir design on aerial contamination levels and the relationship between aerial and carcass contamination levels in two Irish beef abattoirs
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The effect of abattoir design on aerial contamination levels and the relationship between aerial and carcass contamination levels in two Irish beef abattoirs

机译：屠宰场设计对两个爱尔兰牛肉屠场中空气污染水平的影响以及空气污染与屠体污染水平之间的关系

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摘要

This study investigated the relationship between aerial and beef carcass contamination and examined the effect of abattoir design and time of slaughter on the aerobiology of slaughter operations in two commercial beef abattoirs. A dual head impaction air sampler and swab samples taken from 100 cm~2 of the brisket of beef carcasses, were used to examine Total Viable, Psychrotrophic, Enterobacteriaceae and Pseudomonad numbers. In Abattoir A, with a straight-line single-floor design, airborne bacterial numbers were generally lower in the "clean" than in the "dirty" area of the plant. In Abattoir B, which had a serpentine two-floor design, this trend was generally reversed. Both abattoirs displayed a similar pattern in airborne counts over the production day, with numbers generally being lower before slaughter, than in the morning and afternoon. Correlations between aerial and carcass contamination for each of the bacterial groups on the slaughter line in Abattoirs A and B were poor. The data suggest that it is difficult to make a definitive evaluation of the relationship between aerial and carcass contamination levels. Methods currently used to determine the relationship between aerial and carcass contamination need to be reconsidered.
机译：这项研究调查了空中屠体和牛肉contamination体污染之间的关系，并研究了屠宰场设计和屠宰时间对两种商业牛肉屠宰场屠宰操作的生物学的影响。使用双头冲击空气采样器和从100 cm〜2牛cas体的牛s中采集的拭子样本检查总生存力，精神营养性，肠杆菌科和假单胞菌数量。在具有直线单层设计的屠宰场A中，植物的“干净”区域中的空气传播细菌数量通常低于植物“肮脏”区域中的传播细菌数量。在具有蛇形两层设计的屠场B中，这种趋势通常可以逆转。在生产日，两种屠宰场的空中飞行计数都显示出类似的模式，屠宰前的数字通常低于早晨和下午。屠宰场A和B的屠宰生产线中每个细菌群的空气污染与屠体污染之间的相关性很差。数据表明，很难对气管和car体污染水平之间的关系做出明确的评估。需要重新考虑当前用于确定空气污染与屠体污染之间关系的方法。

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