Richardson L J, Cox N A, Buhr R J, Harrison M A
U.S. Department of Agriculture, Agricultural Research Service, Russell Research Center, Athens, GA 30605, USA.
Avian Dis. 2011 Sep;55(3):375-8. doi: 10.1637/9613-121310-Reg.1.
Campylobacter spp. are present in organs and tissues of broiler chickens but the dissemination route is unclear. The aim of the current study was to determine Campylobacter prevalence within circulating blood of commercial broilers. Broilers were acquired from 19 flocks originating from three commercial poultry processing companies. Using aseptic blood collection techniques, 5 ml of circulating blood was collected from each bird and the sample analyzed for Campylobacter. The Campylobacter colonization status of each bird was determined by aseptically sampling and analyzing the ceca. Campylobacter was recovered from 58% (11/19) of flocks sampled. From the 248 total birds sampled, 12% and 46% of the birds had Campylobacter in the blood and ceca, respectively. This study documents Campylobacter prevalence in the circulating blood of commercially raised broilers. Campylobacter presence in the circulatory system may indicate the path used by the organism for rapid dissemination to organs and tissues. From a processing viewpoint, Campylobacter presence in circulating blood of market-age broilers may increase the likelihood of cross-contamination between birds during slaughter.
弯曲杆菌属存在于肉鸡的器官和组织中,但传播途径尚不清楚。本研究的目的是确定商品肉鸡循环血液中的弯曲杆菌流行情况。肉鸡来自三家商业家禽加工公司的19个鸡群。采用无菌采血技术,从每只鸡采集5毫升循环血液,并对样本进行弯曲杆菌分析。通过无菌采集和分析盲肠来确定每只鸡的弯曲杆菌定植状态。在采样的鸡群中,58%(11/19)检测到弯曲杆菌。在总共采样的248只鸡中,分别有12%和46%的鸡血液和盲肠中含有弯曲杆菌。本研究记录了商品肉鸡循环血液中的弯曲杆菌流行情况。弯曲杆菌在循环系统中的存在可能表明该生物体用于快速传播到器官和组织的途径。从加工角度来看,上市日龄肉鸡循环血液中存在弯曲杆菌可能会增加屠宰过程中鸡之间交叉污染的可能性。