Reich Felix, Atanassova Viktoria, Haunhorst Eberhard, Klein Günter
Institute of Food Quality and Food Safety, University of Veterinary Medicine Hanover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany.
Int J Food Microbiol. 2008 Sep 30;127(1-2):116-20. doi: 10.1016/j.ijfoodmicro.2008.06.018. Epub 2008 Jun 24.
For the presence and number of Campylobacter, 18 broiler flocks were sampled over a period of 18 months. A total of 70% of the flocks were positive for Campylobacter, with higher prevalence found in summer and autumn, compared to winter and spring. Positive flocks showed contamination rates above 90%, in negative flocks this was lower, mostly below 50%. The enumeration showed a decrease in Campylobacter during processing of positive flocks. The numbers were highest in carcasses after scalding/defeathering (mean 5.9 log10 cfu/carcass) and dropped by 0.7 log10 cfu/carcass after chilling. A positive correlation was observed between the number of Campylobacter present in the caeca and the number of bacteria present on carcasses and cut products. When a negative flock was slaughtered after Campylobacter positive flocks, the number of positive samples was higher compared to the case when a negative flock had been slaughtered previously. C. jejuni was isolated from 73.6% of the poultry samples.
为了检测弯曲杆菌的存在情况和数量，在18个月的时间里对18个肉鸡群进行了采样。总共70%的鸡群弯曲杆菌检测呈阳性，与冬季和春季相比，夏季和秋季的患病率更高。阳性鸡群的污染率高于90%，阴性鸡群的污染率则较低，大多低于50%。计数结果显示，阳性鸡群在加工过程中弯曲杆菌数量减少。数量在烫毛/脱毛后的胴体中最高（平均5.9 log10 cfu/胴体），冷却后下降了0.7 log10 cfu/胴体。盲肠中弯曲杆菌的数量与胴体及切割产品上的细菌数量之间存在正相关。当在弯曲杆菌阳性鸡群之后屠宰阴性鸡群时，阳性样本的数量比之前屠宰阴性鸡群的情况更高。从73.6%的家禽样本中分离出了空肠弯曲杆菌。
