Berndtson E, Danielsson-Tham M L, Engvall A
Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Int J Food Microbiol. 1996 Sep;32(1-2):35-47. doi: 10.1016/0168-1605(96)01102-6.
To get a better understanding of the epidemiology of Campylobacter, a chicken farm was studied for 16 weeks with samplings in each flock weekly from input until the flock became colonized with Campylobacter or slaughtered. Samples were taken from fresh droppings and from drinkers during the rearing period, as well as from the environment in empty houses. The spread of Campylobacter during the slaughter process was also surveyed. No Campylobacter was found in samples from newly-hatched or one-week-old chickens or their drinkers. All flocks but one were colonized at two to five weeks of age. All Campylobacter isolates belonged to the same sero- and biotype; C. jejuni Penner 2. The spread of Campylobacter in the flock was rapid and usually all samples were positive once colonization had been proven. C. jejuni was isolated from flies in ante-rooms as well as from air in chicken units in houses with positive chicken flocks. Samples were taken at slaughter when some of the Campylobacter positive flocks from the farm were slaughtered. Campylobacter were isolated from all sampled equipment along the processing line, from the chicken transport crates to the chillers, as well as from the air.
为了更好地了解弯曲杆菌的流行病学情况，对一个养鸡场进行了为期16周的研究，从鸡群引进开始，每周对每个鸡群进行采样，直至鸡群被弯曲杆菌定植或被屠宰。在饲养期从新鲜粪便和饮水器中采样，以及在空舍环境中采样。还对屠宰过程中弯曲杆菌的传播情况进行了调查。在新孵化或一周龄鸡及其饮水器的样本中未发现弯曲杆菌。除一个鸡群外，所有鸡群在2至5周龄时被定植。所有弯曲杆菌分离株属于同一血清型和生物型；空肠弯曲菌彭纳2型。弯曲杆菌在鸡群中的传播速度很快，一旦证实鸡群被定植，通常所有样本都会呈阳性。在有阳性鸡群的鸡舍中，在前厅的苍蝇以及鸡舍内的空气中均分离到了空肠弯曲菌。当农场中一些弯曲杆菌阳性鸡群被屠宰时进行了采样。在整个加工线上，从鸡运输箱到冷却器，以及空气中，所有采样设备中均分离到了弯曲杆菌。
