The Experts below are selected from a list of 8022 Experts worldwide ranked by ideXlab platform

Agnes U Ediaasuke - One of the best experts on this subject based on the ideXlab platform.

Richard E Edeh - One of the best experts on this subject based on the ideXlab platform.

Søren Aabo - One of the best experts on this subject based on the ideXlab platform.

  • A risk-based approach for evaluation of hygiene performance at Pig Slaughter
    Food Control, 2017
    Co-Authors: Anne Mette Bollerslev, Maarten Nauta, Tine Hald, Tina Beck Hansen, Søren Aabo
    Abstract:

    Abstract In Denmark, the Pig Slaughterhouses have a daily input of Pigs infected and/or contaminated with Salmonella, and the Slaughter hygiene has major influence on the level of Salmonella contamination on the meat leaving the Slaughterhouse. However, the relationship between the effect of improved hygiene performance and the consequential reduction of human health risk has not been estimated so far. In this study, swab samples from 2702 Pig carcasses were collected, originally for other purposes, from five large Danish Slaughterhouses in a period from 2005 to 2007, covering all seasons of the year. The samples were analysed quantitatively for E. coli and semi-quantitatively for Salmonella. A positive association between the number of E. coli on carcasses and the prevalence of Salmonella positive carcasses was shown. For carcasses positive for Salmonella, a positive association was also shown between the number of E. coli and the number of Salmonella on the carcass. As no biological association has been reported between faecal shedding of E. coli and presence of Salmonella, the relationship was considered to be associated with the level of faecal contamination. The positive association between E. coli and Salmonella was used as basis for developing a quantitative risk assessment model for Salmonella, using the level E. coli as model input. The model output associated the hygiene performance with a relative risk estimate of human salmonellosis. The overall objective was to develop a decision support tool that can be used to support risk-based hygiene interventions in Pig Slaughterhouses.

  • prediction of salmonella carcass contamination by a comparative quantitative analysis of e coli and salmonella during Pig Slaughter
    International Journal of Food Microbiology, 2013
    Co-Authors: Maarten Nauta, Tine Hald, Kristen Barfod, Anders Morten Hay Sorensen, Hannedorthe Emborg, Søren Aabo
    Abstract:

    Faecal contamination of carcasses in the Slaughterhouse is generally considered to be the source of Salmonella on pork. In this study the hygiene indicator Escherichia coli is used to quantify faecal contamination of carcasses and it is hypothesized that it can be used to predict the quantitative carcass contamination with Salmonella, when the distribution of Salmonella concentrations in faeces is known. Paired Pig sample data (faecal samples and carcass swabs) were obtained from five Slaughterhouses and analysed for prevalence and concentrations of E. coli and Salmonella. A simple model was developed to describe the faecal contamination of carcasses using the E. coli data. The E. coli results suggested different hygiene performances in different Slaughterhouses, and showed that a model assuming that carcasses are predominantly contaminated by their own faeces was not appropriate. Observed Salmonella prevalences were low (on average 1.9% on carcasses) and between Slaughterhouses the prevalences ranked differently than the hygiene performance based on the E. coli data suggested. Also, the Salmonella concentrations predicted using E. coli as a faecal indicator were lower than the observed Salmonella concentrations. It is concluded that the faecal carriage of Salmonella together with the faecal contamination of carcasses, as predicted from E. coli data in the animal faeces and hygiene performance of the Slaughterhouse, is not sufficient to explain carcass contamination with Salmonella. Our extensive data set showed that other factors than the observed faecal carriage of Salmonella by the individual animals brought to Slaughter, play a more important role in the Salmonella carcass contamination of pork.

Hezron Emmanuel Nonga - One of the best experts on this subject based on the ideXlab platform.

  • Prevalence of extra-intestinal porcine helminth infections and assessment of sanitary conditions of Pig Slaughter slabs in Dar es Salaam city, Tanzania
    Tropical animal health and production, 2010
    Co-Authors: Ernatus M. Mkupasi, Helena A. Ngowi, Hezron Emmanuel Nonga
    Abstract:

    A study was carried out to establish the prevalence of extra-intestinal porcine helminth infections and to assess the Pig Slaughter slab sanitary conditions in Dar es Salaam city, Tanzania. A total of 24 privately owned Pig Slaughter slabs were assessed. All Slaughter slabs were sub-standard; wrongly located, poorly designed and constructed and lacked most basic requirements for a Slaughter house. Because of inadequate Slaughtering, disposal and cleaning facilities, the Slaughter slabs were under unhygienic condition with questionable safety, soundness and wholesomeness of the pork produced. Routine meat inspection procedures were used to detect extra-intestinal porcine helminth infections. Of the 731 examined Pigs; 8.1%, 5.9% and 0.4% were infected with ascariosis, porcine cysticercosis and hydatidosis, respectively. It was noted that almost all Slaughter Pigs in Dar es Salaam originated from different regions. Based on the region of origin, the status of porcine cysticercosis was 8.2% for Dodoma (n = 98), 8.2% for Manyara (n = 260) and 6.9% for Mbeya (n = 116). This study disclosed the unhygienic sanitary condition prevailing in Dar es Salaam Pig Slaughter slabs and recommends that strategies should be devised to improve the situation. Porcine ascariosis and cysticercosis were widely prevalent and caused economic losses due to condemnations. Because of their zoonotic nature, the observed extra-intestinal porcine helminth infections in Pig pose a public health risk among consumers. Thus, there is a need to introduce appropriate control measures of parasitic infections in Pigs.

  • Occurrences of thermophilic Campylobacter in Pigs Slaughtered at Morogoro Slaughter slabs, Tanzania
    Tropical Animal Health and Production, 2010
    Co-Authors: Robinson H. Mdegela, Kibona Laurence, Petro Jacob, Hezron Emmanuel Nonga
    Abstract:

    Occurrences of thermophlic Campylobacter in Pigs and Pig carcasses was investigated in a cross-sectional study that was carried out in three selected Slaughter slabs in Morogoro municipality, Tanzania. Before sampling, the slab hygiene, Slaughter, carcass dressing, and meat handling was assessed. Fecal samples were collected from 66 Slaughter Pigs at the kill floor. After Slaughter, a 100-cm2 area on medial surface of the thigh muscles of dressed carcasses was sampled using sterile cotton swabs. Thereafter, the jejunal, cecal, and colon contents were also sampled. The samples were subjected to standard bacteriological examination using Skirrows protocol. In all Slaughter slabs visited, it was found that Pig Slaughter, dressing, and meat handling was done on the ground under unhygienic condition. All the Slaughter slab environment were dirty and had neither tap water or drainage systems. Thermophilic Campylobacter prevalence in Slaughtered Pig was 66.7% while contamination rate of dressed carcasses was 10.6%. Of the Campylobacter-positive carcasses, five (12.2%) were from the animals which were also positive to Campylobacter. The isolation rate of Campylobacter in the cecum was higher (34.8%) compared to the small intestines (28.8%) and colon (16.7%) although the difference was not statistically significant (P > 0.05). Campylobacter jejuni was the most prevalent species as it constituted 74% of all isolates, while Campylobacter coli was isolated at 26%. This suggests possible risks of infection to people through consumption of contaminated pork or through contact with infected Pigs. Cecum was found to be the major part of intestine highly colonized by Campylobacter.

J Sofos - One of the best experts on this subject based on the ideXlab platform.

  • interventions to control salmonella contamination during poultry cattle and Pig Slaughter
    Food Research International, 2012
    Co-Authors: S Buncic, J Sofos
    Abstract:

    Abstract The fundamental principle of controlling microbial contamination during Slaughter is based on sanitary and hygienic processes. Both choosing abattoir technologies and conducting individual operations should be approached with the primary goal of minimizing microbial load on the final product. Nevertheless, even when best hygienic abattoir practices are applied, complete prevention of all microbial contamination of carcasses is unachievable under commercial conditions. Therefore, in some situations it may be considered necessary to further reduce the microbial loads on carcasses through application of additional control interventions, i.e. decontamination treatments. Treatments applied on poultry carcasses or parts include water, steam and chemical solutions (e.g., lactic or acetic acid, chlorine-based compounds, cetylpyridinium chloride, and trisodium phosphate) and result in overall microbial reductions of 0.6–3.8 log units; antimicrobial activity of some chemicals (e.g., chlorine compounds) is reduced in the presence of organic material. Decontamination treatments of hides (pre-skinning) and/or cattle carcasses reduce Salmonella by