Naslov
Meat juice seroprevalence and presence of Salmonella spp. and Yersinia enterocolitica in tonsils of slaughtered pigs

Autori
Fuštin, Dunja ; Kiš, Marta ; Vlahek, Ivan ; Zdolec, Nevijo

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings ECVPH Scientific Conference and Annual General Meeting 2022, Food Safety and Animal Health in times of crises: a syndemic perspective / - : ECVPH, 2022, 42-42

Skup
ECVPH Scientific Conference and Annual General Meeting 2022: Food Safety and Animal Health in times of crises: a syndemic perspective

Mjesto i datum
Atena, Grčka, 28.09.2022. - 30.09.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
meat juice serology, pigs, farm, Salmonella, Yersinia, tonsils

Sažetak
Background. Salmonella spp. and Yersinia enterocolitica are a priority public health threat in pork safety. Objective. The aim of this study was to determine the prevalence of Salmonella spp. and Y. enterocolitica by microbiological examination of tonsils and serological analyses of meat juice from slaughtered pigs from different farming systems. Materials and Methods. Ninety-one samples of tonsils and meat juice from the same pigs were analyzed, of which 54 samples were from 18 large farms and 37 samples were from 18 family farms. The presence of Salmonella spp. and Y. enterocolitica in pig tonsils was tested using standard culture methods, and suspect isolates were identified using MALDI-TOF mass spectrometry. The presence of IgG antibodies in meat juice was determined using pigtype Yersinia Ab ELISA kits with inactivated antigen. Results. The overall prevalence of Salmonella spp. and Y. enterocolitica in tonsils was 9.8% and 6.5%, respectively, with no significant differences (p > 0.05) between large farms and family farms. Salmonella spp. was more prevalent in large farms with lower biosecurity (p<0.05). The seroprevalence of Salmonella spp. was 48.35% and of Yersinia 13.18%, without significant differences (p>0.05) between farm types and biosecurity categories. A total of 63.8% of farms were serologically positive for Salmonella and 27.7% for Yersinia. Correlation of findings of Salmonella spp. or Y. enterocolitica in tonsils with seroprevalence was not found (φc=0.121, p=0.420 ; φc=0.027, p=0.718, respectively). A higher recovery rate of Salmonella spp. and Y. enterocolitica from the tonsils is expected in seropositive pigs (OR 1.56-2.36), but without statistical significance (p>0.05). Discussion and Conclusion, Perspectives. The results of this study suggest a need to improve farming and slaughter practices and to include serological surveillance of Salmonella spp. and Y. enterocolitica in pigs in the risk categorization of farms in Croatia, which would increase safety throughout the meat chain.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA