Reducing airborne pathogens, dust and Salmonella transmission in experimental hatching cabinets using an electrostatic space charge system
Reducing airborne pathogens, dust and Salmonella transmission in experimental hatching cabinets using an electrostatic space charge system
复制标题
DOI：
10.1093/ps/81.1.49
复制
发表时间：
2002-01-01
期刊：
影响因子：
4.4
通讯作者：
Cox, NA
中科院分区：
文献类型：
--
作者：
Mitchell, BW;Buhr, RJ;Cox, NA
封闭空间中微粒的静电充电已被证明是减少空气中粉尘的有效手段。在孵化过程中产生的灰尘与沙门氏菌的传播密切相关，这使孵卵者的清洁和消毒过程变得复杂。在进行了两次初步降尘试验后，进行了四次试验，以评估静电空间电荷系统（ESCS）对实验孵化柜内总需氧菌（TPC）、肠杆菌科（ENT）和沙门氏菌水平的影响。ESCS放置在一个孵化柜中，该孵化柜中约有50%的18 d龄肉鸡孵化蛋。ESCS连续运行，通过孵化在整个机柜中产生强烈的负静电电荷，并在装有水和脱脂剂的接地托盘中收集灰尘。旁边的孵化柜作为未经处理的对照组。每天从孵化箱中收集空气样本，在三个试验中，每个孵化箱中的样本小鸡长到7日龄进行盲肠分析。ESCS可使TPC和ENT降低85 ~ 93% （P < 0.05）。初步试验期间，粉尘浓度显著降低（P < 0.0001），平均降低93.6%。7日龄雏鸡盲肠内容物中每克沙门氏菌数量显著降低（P < 0.001），平均降低log(10) 3.4 cfu/g。这种电离技术相对便宜，可用于减少孵化柜内空气中的细菌和灰尘。
Electrostatic charging of particles in enclosed spaces has been shown to be an effective means of reducing airborne dust. Dust generated during the hatching process has been strongly implicated in Salmonella transmission, which complicates the cleaning and disinfecting processes for hatchers. Following two preliminary trials in which dust reduction was measured, four trials were conducted to evaluate the effectiveness of an electrostatic space charge system (ESCS) on the levels of total aerobic bacteria (TPC), enterobacteriaceae (ENT), and Salmonella within an experimental hatching cabinet. The ESCS was placed in a hatching cabinet that was approximately 50% full of 18-d-old broiler hatching eggs. The ESCS operated continuously to generate a strong negative electrostatic charge throughout the cabinet through hatching, and dust was collected in grounded trays containing water and a degreaser. An adjacent hatching cabinet served as an untreated control. Air samples from hatchers were collected daily, and sample chicks from each hatcher were grown out to 7 d of age for cecal analysis in three of the trials. The ESCS significantly (P < 0.05) reduced TPC and ENT by 85 to 93%. Dust concentration was significantly reduced (P < 0.0001) during the preliminary trials with an average reduction of 93.6%. The number of Salmonella per gram of cecal contents in birds grown to 7 d of age was significantly (P < 0.001) reduced by an average log(10) 3.4 cfu/g. This ionization technology is relatively inexpensive and could be used to reduce airborne bacteria and dust within the hatching cabinet.