No description available.

Mémoire de maîtrise--Histoire--Paris 8, 1990.

Texte remanié de: Th. doct.--Ergonomie--Bordeaux 2, 1997. / ISPED = Institut de santé publique, d'épidémiologie et de développement. Bibliogr. p. 151-155.

The most cost effective treatment scheme for effluent from Midfield Meats, an abattoir in Warrnambool, Australia, was evaluated via a series of laboratory and commercial scale experiments. Effectiveness was measured in terms of suspended solids (SS) and biological oxygen demand (BOD) reduction. Economic assessment was based on predicted reduction in trade waste charges versus infrastructure and running costs. From the range of potential treatment technologies, those deemed most appropriate for trialling included pre-screening, sedimentation, coagulation and flocculation treatment and dissolved air floatation (DAF). Prior to evaluation of treatment types, flow, loads and contaminant characterisation of the waste streams was conducted to aid in selection of treatment type and capacity. Prescreening was found to be the most cost effective, followed by sedimentation, coagulation and flocculation treatment and finally DAF. The most economical treatment scheme that satisfied the requirements of Midfield Meats included a combination of prescreening and sedimentation. DAF and coagulation and flocculation treatment satisfactorily treated the wastewater, however were not cost effective under the current trade waste agreement.

L’intensification du travail est un phénomène présent en Occident depuis la fin des Trente Glorieuses et qui fait partie du quotidien de la plupart des travailleurs et travailleuses. Les écrits scientifiques sur l’intensification du travail traitent grandement des causes et des conséquences de celle-ci, mais peu des moyens d’action afin d’y faire face. En ce sens, la posture syndicale face à celle-ci reste à documenter. Ce mémoire s’intéresse ainsi aux leviers et obstacles à l’action syndicale sur la charge de travail ainsi qu’au répertoire d’action utilisé. Le secteur d’activité à l’étude est celui de l’abattage de porcs au Québec. Bien que ce secteur représente un terreau fertile pour le syndicalisme québécois, en plus d’être un pôle économique majeur, très peu d’études s’y sont intéressées. Justement, dans un secteur où la charge de travail est importante comment les syndicats composent-ils avec celle-ci, dans ses différentes composantes ? Le cadre conceptuel proposé s’inspire des travaux de Craypo (1994) et de Lévesque & Murray (2010). Notre étude se base sur une recherche documentaire importante dans la presse, sur une analyse des conventions collectives du secteur ainsi que sur 14 entrevues semi-dirigées avec des personnes impliquées syndicalement auprès (conseillers syndicaux et élus nationaux) ou dans les abattoirs de porc (élus locaux). Cette étude fait partie de la phase II de l’étude « L’action syndicale en santé et sécurité du travail », dirigée par la professeure Geneviève Baril-Gingras. Elle cherche à comprendre les leviers et obstacles à l’action syndicale locale en SST. Ce mémoire fait état de la difficulté des syndicats de composer avec la problématique de la charge de travail, principalement causée par le caractère vétuste de la législation du travail et la mondialisation de l’économie, tout en soulignant des pistes de solution provenant tant du Québec que de l’étranger.

Published Article / The waste management practices used at red-meat abattoirs in the Free State province for disposal of condemned products generated in abattoirs and the problems associated with the different waste disposal methods were investigated. Problems caused by various products generated at abattoirs. such as abattoir waste water, blood, stomach contents, manure, whole carcasses, fetuses and all products unsuitable for human consumption requiring disposal were identified. Recommended solutions took into account the most effective handling manner, causing minimum environmental pollution, reducing any health risks to communities, and converting condemned products into value-added by-products by changing certain waste management processes / strategies. The handling of waste, specifically of condemned products, at 78 red meat abattoirs was analysed.

Thesis ( MPH.) --University of Limpopo,2014. / Introduction: To evaluate the food safety legislation (FSL) implementation in the red meat abattoirs of Mopani district in Limpopo Province, South Africa. Method: A cross sectional survey was conducted. Sampling: A questionnaire was distributed to abattoir managers of various red meat abattoirs. From 16 abattoirs with a population 169, a sample of 22 was selected. Results: The study revealed that 77% managers were male. Majority of managers were aged 40 and 59 years. Work experience was between 20 to 25 years. Educational background: thirty seven percent (37%) of managers hold certificates on various disciplines, mostly not food safety related. Fifty-four percent (54%) managers did not have food safety knowledge. Fifty-nine percent (59%) abattoirs did not comply with food safety practices. Twenty seven percent (27%) of the structures did not comply with R.1072. The pieces of FSL were less implemented by DoH&SD and DTI. Hygiene Management Systems showed slow progress. Sixty-four percent (64%) abattoirs did not receive training on HMS and PRPs. Very few abattoirs had multi-disciplinary skilled personnel to implement FSL. Abattoirs were reluctant to financial commitment to implement FSL. Eighty two percent (82%) of abattoirs did not involve all stakeholder during planning and decision making process. Conclusion: The red meat abattoirs of Mopani district did not comply with all standards and requirements of food safety legislation. Factors such as educational background in basics of food safety principles, involvement of role players during implementation process, prevented successful implementation of food safety legislation in the red meat abattoirs of Mopani district. Food safety knowledge and practices of management and malpractice of FSL were determined, results showed that majority lack adequate food safety knowledge and poor food safety practices were identified. One of the recommendation was to establish FSL enforcement forum to develop a FSL strategy.

This study of four domestic abattoirs in South Australia with Quality Assurance programmes in place established the size of bacterial populations that could be expected on pig carcasses on entry to abattoir dressing floors at pre-evisceration, the extent of contamination occurring during carcass dressing, and the effect of chilling on these populations. Analysis was conducted for salmonellae, Escherichia coli, Total Viable Count, and pseudomonads. Exterior swabbing was compared to swabbing of corresponding interior sites which are sterile initially. The interior swabbing sites were found to be a more reliable measure of contamination during the dressing process than the swabbing of already contaminated exterior sites. During the identification of some of the points of carcass contamination, the effectiveness of end-of-work foam cleaning programmes used at abattoir dressing floors and their relationship to the potential for airborne contamination of carcasses was examined and found to be positive. Operators' work tools and hands were identified as sources of interior carcass contamination combined with failure of operators to adhere to Standard Operating Procedures (SOPs) during carcass dressing, especially those related to hand and forearm washing at appropriate times. Foot-operated full-immersion hot water units for operators' knives and steels were designed and installed at two abattoirs to give operators access to physically and biologically clean work tools throughout carcass dressing. / PhD Doctorate

Salmonella species is the etiologic agent of salmonellosis, which is a zoonotic infection that is characterized by diarrhea and systemic infection. Contaminated foods are usually the vehicles of Salmonella transmission along the food supply chain. Asymptomatic food production animals and effluents also contribute to contamination of meat. Antimicrobials have contributed significantly to treatment of salmonellosis. However, uncontrolled antimicrobial use is among the causes of antibiotic resistance, which results in treatment failure. The aim of this research study was to determine the extent of Salmonella spp contamination during the cattle slaughtering process in South African rural abattoirs (n = 23), water and cattle feaces. In addition, the aim was to determine antimicrobial resistance profiles of the Salmonella spp isolates. The specific objectives were: i) to establish the occurrence and distribution of Salmonella spp on cattle carcasses, hides, and intestinal contents and environmental samples using classical microbiology and molecular techniques; ii) to determine the Salmonella serovars using serotyping; and iii) to determine antimicrobial resistance patterns and multidrug resistance among the Salmonella isolates using the Kirby-Bauer disc diffusion method. Materials and Classical microbiology techniques were used to analyze cattle faeces (n = 400), hides (n = 67), intestinal contents (n = 62), carcass sponges (n = 100), and water from the abattoirs (n = 75) for the presence of Salmonella spp. Further confirmation of the Salmonella isolates was done using Polymerase Chain Reaction whereby the invA gene was targeted. A total of 92 Salmonella spp isolates were recuperated. The 92 Salmonella were serotyped as described in the White-Kauffmann-Le Minor scheme. The 92 Salmonella spp isolates were further subjected to antimicrobial susceptibility examination towards the following antimicrobials: ampicillin (10μg), cefotaxine (30μg), kanamycin (30μg), oxytetracycline (30μg), and enrofloxacin (5μg) by using the Kirby-Bauer disk diffusion procedure. All the isolates carried the invA genes. The average Salmonella spp occurrence on carcasses, hides, and intestinal contents was 35.37% (n = 81). Eleven of the faecal samples (2.75%) tested positive for Salmonella spp. The Salmonella serovar that occurred more frequently was S. Enteritidis. Different serovars that were recognized on carcasses were not automatically found on the hides and intestinal contents. The incompatible frequency of the different Salmonella serovars on carcasses, intestinal contents and hides means that in addition to carriage on hides and in intestinal contents, new external causes that did not form part of this study also play a vital role concerning carcass contamination. Most Salmonella spp (n = 66; 71.7%) isolates were resistant to a minimum of one antimicrobial with main resistance detected towards oxytetracycline (51.90%). This emphasizes on the call for wise antimicrobial use at some stage in animal production and strict sanitation for the duration of slaughtering. Briefly, cattle slaughtered in South African rural abattoirs harboured different types of Salmonella serovars that were resistant to antimicrobials, which could be a public health risk and danger. The outcome should support policymakers with determining the effectiveness of existing sanitary measures during cattle slaughtering in rural abattoirs, which is vital from socio-economic, public health, and epidemiological perspectives. / College of Agriculture and Environmental Sciences

Tertiary treatment methods were tested on secondary effluent from an abattoir biological wastewater treatment plant with the purpose of renovating it for re-use in the abattoir. The colour and dissolved organic matter could be removed to such an extent that the water would comply with water of insignificant health risk (Department of Health). The treatment process sequence proven to be effective in upgrading this water so insignificant health risk standard were coagulation with a polymer blend, separation, ozonation, filtration and activated carbon filtration. The development of biologically activated carbon in practice was accepted as inevitable and desirable for optimum water quality, but not tested. A deciding factor in the selection of an appropriate treatment was that the final water would also have acceptable corrosion properties. / Dissertation (MSc)--University of Pretoria, 2010. / Chemical Engineering / unrestricted