断奶仔猪中阿哥纳沙门氏菌和鼠伤寒沙门氏菌的实验性空气传播
Experimental airborne transmission of Salmonella Agona and Salmonella Typhimurium in weaned pigs.
作者信息
Oliveira C J B, Carvalho L F O S, Garcia T B
机构信息
Departamento de Patologia Animal, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, FCAV-UNESP, Jaboticabal, Brasil.
出版信息
Epidemiol Infect. 2006 Feb;134(1):199-209. doi: 10.1017/S0950268805004668.
Abstract
This study tested the hypothesis of airborne transmission of Salmonella Agona (Trial I) and Salmonella Typhimurium (Trial II) in weaned pigs. The trials were performed using stainless-steel/glass isolation cabinets connected by air ducts to permit an unidirectional airflow from cabinet 1 (two control pigs) to cabinet 3 (two sentinel pigs), passing through cabinet 2 (two inoculated pigs). Air samples, pooled faecal samples from the floor and rectal swabs were collected daily and assessed by culture and PCR. A fumigation chamber and rubber gloves coupled to the cabinets allowed sampling without opening the system. Trials I and II lasted 15 and 19 days respectively. The recovery of S. Agona and S. Typhimurium and detection of seroconversion in sentinel pigs indicate that airborne Salmonella transmission in weaned pigs over short distances is possible. Further studies on the role of aerosols in the epidemiology of Salmonella in intensive pig production should be performed.
摘要
本研究检验了断奶仔猪中阿贡纳沙门氏菌（试验I）和鼠伤寒沙门氏菌（试验II）通过空气传播的假设。试验使用通过风道连接的不锈钢/玻璃隔离柜进行，以允许空气从柜1（两只对照猪）单向流向柜3（两只哨兵猪），并经过柜2（两只接种猪）。每天收集空气样本、来自地面的混合粪便样本和直肠拭子，并通过培养和PCR进行评估。一个熏蒸室和连接到柜子的橡胶手套使得在不打开系统的情况下进行采样成为可能。试验I和试验II分别持续了15天和19天。在哨兵猪中回收阿贡纳沙门氏菌和鼠伤寒沙门氏菌以及检测到血清转化表明，断奶仔猪中短距离的空气传播沙门氏菌是可能的。应进一步开展关于气溶胶在集约化养猪生产中沙门氏菌流行病学中的作用的研究。
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