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At the European level the control of foodborne diseases IS defined by the new zoonoses legislation (Directive 20031991EC and Regulation (EC) No 2160/2003), which pomts out the necessity to establish surveillance programmes for zoonotic agents in animal populations. Recently Commission Decision 2006/6681EC concerning a baseline study on the prevalence of Salmonella in slaughter p1gs has been published. Many different strategies have been developed and applied by EU Member States 1n order to Implement momtoring and/or control programmes for Salmonella 1n pigs; these strateg1es are mamly based on bacteriological analysis (performed on caecal content, ileo caecal lymph nodes or carcass swabs collected at slaughterhouse) and/or on serological analys1s (mainly performed on meat JUICe obtamed from diaphragm muscle). Very few data are published about the comparison among different strategies so that 11 is still difficult for a country wanting to implement a monitoring/control programme to choose the most cost-effective methodology. The objective of the present study was to develop an effective methodology to evaluate Salmonella spp . prevalence in slaughter pigs comparing bacteriological and serological strateg1es with the aim of identifying the most effective methodology to apply. To detect the presence of the infection, both bacteriological examination of faeces and ileocaecal lymph nodes and serological investigation of meat-juice and blood sera were used. Samples of diaphragm muscle, blood , caecal content and mesentenc lymph nodes were collected from 150 p1gs of 10 batches 1n two slaughterhouses of the Veneto Region of Italy and comparisons were made between ISolation of Salmonella in faeces and lymph nodes and the capability to detect Salmonella antibodies 1n sera and meat JUICe us1ng three different commercial ELISA kits . In th1s paper the results of bacteriological and serological investigations are presented emphas1s1ng the companson among the three different commercial ELISA kits .

Evaluation of the use of serological and bacteriological investigation for monitoring and controlling Salmonella in Italian pig herds