Análise do controverso funcionamento clandestino de avícolas no município de São Paulo

O Brasil possui legislação sanitária rigorosa na produção de alimentos, entretanto questões culturais frequentemente conflitam com as normas, como o abate clandestino de aves. Mesmo com toda a tecnologia empregada e rigor do sistema de inspeção brasileiro ainda verifica-se o consumo de aves provenientes desses abates. O presente estudo objetivou fazer uma análise crítica sobre a existência e funcionamento das "Avícolas" no município de São Paulo, identificar fatores facilitadores e discutir ações para mitigar os riscos sanitários dessa atividade. Utilizou-se abordagem qualitativa para análise de documentos e relatórios gerados nas rotinas de trabalho da Coordenação de Vigilância em Saúde da Prefeitura do Município de São Paulo e legislação vigente acerca do assunto. Estima-se aproximadamente 3900 estabelecimentos com condições estruturais e sanitárias irregulares, porém não há levantamentos e/ou registros. As aves não possuem procedência determinada ou certificações sanitárias. O ambiente é promíscuo e insalubre, situação agravada pela falta de cuidados dos colaboradores. Há eliminação irregular de resíduos do abate, ausência de programas de autocontrole e/ou boas práticas de fabricação. Concluiu-se que as Avícolas são informais, ilegais e clandestinas, impactam negativamente a Saúde Pública pela atividade desenvolvida em desacordo com as normas sanitárias, ambientais e trabalhistas.(AU)

Brazil has strict sanitary laws in food production. However, cultural issues often conflict with the rules, such as clandestine slaughter of birds. Even with all the technology employed and the rigor of the Brazilian inspection system, we still observe the consumption of poultry from these slaughters. This study aimed to critically analyze the existence and functioning of poultry in the city of São Paulo, to identify facilitating factors and to discuss actions to mitigate the health risks of this activity. A qualitative approach used to analyze documents and reports generated in the work routines of the Health Surveillance Coordination Oflice of the Municipality of São Paulo and current legislation on the subject. There are approximately 3900 establishments without structural and sanitary conditions are estimated, but there are no surveys and / or records. The birds have no specific provenance or sanitary certifications. The environment is promiscuous and unhealthy, a situation aggravated by the lack of care of employees. There is irregular disposal of slaughter residues, absence of self-control programs and / or good manufacturing practices. It was concluded that Poultry are informal, illegal and clandestine, negatively impact Public Health by the activity developed in disagreement with sanitary, environmental and labor standards.(AU)

Análise do controverso funcionamento clandestino de avícolas no município de São Paulo

O Brasil possui legislação sanitária rigorosa na produção de alimentos, entretanto questões culturais frequentemente conflitam com as normas, como o abate clandestino de aves. Mesmo com toda a tecnologia empregada e rigor do sistema de inspeção brasileiro ainda verifica-se o consumo de aves provenientes desses abates. O presente estudo objetivou fazer uma análise crítica sobre a existência e funcionamento das "Avícolas" no município de São Paulo, identificar fatores facilitadores e discutir ações para mitigar os riscos sanitários dessa atividade. Utilizou-se abordagem qualitativa para análise de documentos e relatórios gerados nas rotinas de trabalho da Coordenação de Vigilância em Saúde da Prefeitura do Município de São Paulo e legislação vigente acerca do assunto. Estima-se aproximadamente 3900 estabelecimentos com condições estruturais e sanitárias irregulares, porém não há levantamentos e/ou registros. As aves não possuem procedência determinada ou certificações sanitárias. O ambiente é promíscuo e insalubre, situação agravada pela falta de cuidados dos colaboradores. Há eliminação irregular de resíduos do abate, ausência de programas de autocontrole e/ou boas práticas de fabricação. Concluiu-se que as Avícolas são informais, ilegais e clandestinas, impactam negativamente a Saúde Pública pela atividade desenvolvida em desacordo com as normas sanitárias, ambientais e trabalhistas

Brazil has strict sanitary laws in food production. However, cultural issues often conflict with the rules, such as clandestine slaughter of birds. Even with all the technology employed and the rigor of the Brazilian inspection system, we still observe the consumption of poultry from these slaughters. This study aimed to critically analyze the existence and functioning of poultry in the city of São Paulo, to identify facilitating factors and to discuss actions to mitigate the health risks of this activity. A qualitative approach used to analyze documents and reports generated in the work routines of the Health Surveillance Coordination Office of the Municipality of São Paulo and current legislation on the subject. There are approximately 3900 establishments without structural and sanitary conditions are estimated, but there are no surveys and / or records. The birds have no specific provenance or sanitary certifications. The environment is promiscuous and unhealthy, a situation aggravated by the lack of care of employees. There is irregular disposal of slaughter residues, absence of 77 Higiene Alimentar - Vol.32 - nº 285/286 - Novembro/Dezembro de 2018 self-control programs and / or good manufacturing practices. It was concluded that Poultry are informal, illegal and clandestine, negatively impact Public Health by the activity developed in disagreement with sanitary, environmental and labor standards

Análise do controverso funcionamento clandestino de avícolas no município de São Paulo

O Brasil possui legislação sanitária rigorosa na produção de alimentos, entretanto questões culturais frequentemente conflitam com as normas, como o abate clandestino de aves. Mesmo com toda a tecnologia empregada e rigor do sistema de inspeção brasileiro ainda verifica-se o consumo de aves provenientes desses abates. O presente estudo objetivou fazer uma análise crítica sobre a existência e funcionamento das "Avícolas" no município de São Paulo, identificar fatores facilitadores e discutir ações para mitigar os riscos sanitários dessa atividade. Utilizou-se abordagem qualitativa para análise de documentos e relatórios gerados nas rotinas de trabalho da Coordenação de Vigilância em Saúde da Prefeitura do Município de São Paulo e legislação vigente acerca do assunto. Estima-se aproximadamente 3900 estabelecimentos com condições estruturais e sanitárias irregulares, porém não há levantamentos e/ou registros. As aves não possuem procedência determinada ou certificações sanitárias. O ambiente é promíscuo e insalubre, situação agravada pela falta de cuidados dos colaboradores. Há eliminação irregular de resíduos do abate, ausência de programas de autocontrole e/ou boas práticas de fabricação. Concluiu-se que as Avícolas são informais, ilegais e clandestinas, impactam negativamente a Saúde Pública pela atividade desenvolvida em desacordo com as normas sanitárias, ambientais e trabalhistas.

Brazil has strict sanitary laws in food production. However, cultural issues often conflict with the rules, such as clandestine slaughter of birds. Even with all the technology employed and the rigor of the Brazilian inspection system, we still observe the consumption of poultry from these slaughters. This study aimed to critically analyze the existence and functioning of poultry in the city of São Paulo, to identify facilitating factors and to discuss actions to mitigate the health risks of this activity. A qualitative approach used to analyze documents and reports generated in the work routines of the Health Surveillance Coordination Oflice of the Municipality of São Paulo and current legislation on the subject. There are approximately 3900 establishments without structural and sanitary conditions are estimated, but there are no surveys and / or records. The birds have no specific provenance or sanitary certifications. The environment is promiscuous and unhealthy, a situation aggravated by the lack of care of employees. There is irregular disposal of slaughter residues, absence of self-control programs and / or good manufacturing practices. It was concluded that Poultry are informal, illegal and clandestine, negatively impact Public Health by the activity developed in disagreement with sanitary, environmental and labor standards.

Efficiency analysis of the electrocoagulation and electroflotation treatment of poultry slaughterhouse wastewater using aluminum and graphite anodes.

The application of electrocoagulation (EC) and electroflotation (EF) was investigated for the treatment of poultry slaughterhouse wastewater in a bench scale unit cell electrolyzer with different EC-to-EF ratios at current densities of 3, 9, and 15 mA cm-2. The EC-to-EF ratio was controlled by current reversal using aluminum and graphite electrodes. The electrochemical treatment showed satisfactory removal efficiencies for Al coagulant loads greater than 51.8 mg L-1. The 4/5 EC to EF ratio (69.1 mg L-1 Al and 32.2 NmL L-1 additional EF gas) and 3/5 (51.8 mg L-1 Al/64 NmL L-1 additional EF gas) presented the best results for the removal of COD (76-85%), color (93-99%), and turbidity (95-99%), with the additional benefit of reducing the electrode consumption and sludge disposal costs proportionally to the EC-to-EF ratio. The effects of the EC-to-EF ratio and the current density on efficiency of the electrochemical treatment for the removal of COD, apparent color, turbidity, TSS, TSD, and NH3-N were discussed in the light of the physicochemical and electrochemical processes underlying the removal mechanism for each parameter. In particular, the blow-off mechanism seems to play an important role in the NH3-N removal, whereas indirect electrooxidation mechanism accounts for a fraction of the soluble COD removal for the electrodes configuration used in the treatment.

Prevalence of Salmonella spp. in poultry carcasses samples collected in slaughterhouses of Southern Brazil from 2006 to 2015.

INTRODUCTION: This study aimed to evaluate the prevalence of Salmonella on poultry carcasses produced in slaughterhouses of Southern Brazil participating of the Official Pathogen Reduction Program conducted by the Ministry of Agriculture, Livestock, and Supply. METHODOLOGY: From 2006 to 2015, 77,165 poultry carcasses were analyzed for presence/absence of Salmonella spp. and the results were statistically evaluated. RESULTS: Prevalence varied from 2.92% to 5.24%, with a mean percentage of 4.04%. The difference in prevalence numbers was not significant during all the period analyzed. Higher Salmonella prevalence has been reported worldwide, indicating the efficacy of Brazilian control measures implemented in the productive chain and the low risk associated to Brazilian poultry meat consumption. However, additional information about the acceptable and safe prevalence of Salmonella on poultry should be defined by risk analysis studies, considering the reality of Brazilian companies and scientific data. CONCLUSIONS: The results of the present study can be the first step for a national Risk Assessment and may contribute to improvements in self-controlling programs and with the current Brazilian poultry regulation.

Lipid sources in diets for egg-laying japanese quail: performance and egg quality / Fontes lipídicas nas dietas para codornas japonesas em postura: desempenho e qualidade do ovo

This study evaluated the effect of using lipid sources of plant and animal origin in diets for Japanese quail (Coturnix coturnix japonica) on production performance and internal egg quality. Japanese quails (n = 160) were distributed in a completely randomized design with four treatments and eight replications of five birds each. Lipid sources evaluated were: soybean oil, from poultry slaughterhouse, fish waste and grape seed. The characteristics of performance and internal egg quality were measured every 21 days for a total period of 84 days. Data were subjected to analysis of variance and the means were compared by Tukeys test. There was no effect of treatments on the production performance of birds, except for feed intake, which was higher for birds fed grape seed oil in the diet. Lipid sources evaluated had no influence on the internal egg quality. It can be concluded that the lipid sources evaluated here in can be used as alternative energy in feed for laying quails, without affecting the performance and internal egg quality.

O objetivo deste trabalho foi avaliar a utilização de fontes lipídicas de origem animal e vegetal nas rações para codornas japonesas (Coturnix coturnix japonica), em relação ao desempenho zootécnico e à qualidade interna do ovo. Foram utilizadas 160 codornas japonesas, distribuídas em delineamento inteiramente casualizado, com quatro tratamentos e oito repetições por tratamento, com cinco aves por repetição. As fontes lipídicas avaliadas foram: óleo de soja, de abatedouro avícola, de resíduo de peixe e de semente de uva. As características de desempenho e qualidade interna dos ovos foram mensurados a cada 21 dias, em um período total de 84 dias. Os dados obtidos foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey. Não houve efeito dos tratamentos sobre o desempenho produtivo das aves, exceto para o consumo de ração, que foi maior para aves alimentadas com óleo de semente de uva nas rações. As fontes energéticas avaliadas não influenciaram a qualidade interna dos ovos. Diante disso, conclui-se que as fontes lipídicas avaliadas neste estudo podem ser utilizadas como ingredientes energéticos nas rações para codornas em postura, sem afetar o desempenho e a qualidade interna dos ovos.

Lipid sources in diets for egg-laying japanese quail: performance and egg quality / Fontes lipídicas nas dietas para codornas japonesas em postura: desempenho e qualidade do ovo

This study evaluated the effect of using lipid sources of plant and animal origin in diets for Japanese quail (Coturnix coturnix japonica) on production performance and internal egg quality. Japanese quails (n = 160) were distributed in a completely randomized design with four treatments and eight replications of five birds each. Lipid sources evaluated were: soybean oil, from poultry slaughterhouse, fish waste and grape seed. The characteristics of performance and internal egg quality were measured every 21 days for a total period of 84 days. Data were subjected to analysis of variance and the means were compared by Tukeys test. There was no effect of treatments on the production performance of birds, except for feed intake, which was higher for birds fed grape seed oil in the diet. Lipid sources evaluated had no influence on the internal egg quality. It can be concluded that the lipid sources evaluated here in can be used as alternative energy in feed for laying quails, without affecting the performance and internal egg quality.(AU)

O objetivo deste trabalho foi avaliar a utilização de fontes lipídicas de origem animal e vegetal nas rações para codornas japonesas (Coturnix coturnix japonica), em relação ao desempenho zootécnico e à qualidade interna do ovo. Foram utilizadas 160 codornas japonesas, distribuídas em delineamento inteiramente casualizado, com quatro tratamentos e oito repetições por tratamento, com cinco aves por repetição. As fontes lipídicas avaliadas foram: óleo de soja, de abatedouro avícola, de resíduo de peixe e de semente de uva. As características de desempenho e qualidade interna dos ovos foram mensurados a cada 21 dias, em um período total de 84 dias. Os dados obtidos foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey. Não houve efeito dos tratamentos sobre o desempenho produtivo das aves, exceto para o consumo de ração, que foi maior para aves alimentadas com óleo de semente de uva nas rações. As fontes energéticas avaliadas não influenciaram a qualidade interna dos ovos. Diante disso, conclui-se que as fontes lipídicas avaliadas neste estudo podem ser utilizadas como ingredientes energéticos nas rações para codornas em postura, sem afetar o desempenho e a qualidade interna dos ovos.(AU)

Antimicrobial resistance profile of Salmonella Heidelberg isolated from a poultry slaughterhouse in 2005 and 2009 / Perfil de resistência a antimicrobianos por Salmonella Heidelberg isoladas de abatedouro avícola em 2005 e 2009

Background: Salmonella spp. is recognized as being one of the most common bacterial causes of food-borne illness spreadon poultry production due to easy adaptation to environment and diffi cult to eradicate. In poultry production system antimicrobials are added in feed as growth promoters in continuous and sub-therapeutic doses, inducing a selective pressure andconsequent antimicrobial resistance. This management causes public health problems to disseminate resistant pathogensthrough food chain and reduce the options of treatment of bacterial infections.Materials, Methods & Results: The samples were isolated in a poultry slaughterhouse under Federal Inspection in amonitoring, research and quantifi cation project of Salmonella spp in critical control points in slaughterhouse. Adaptedmethodology was used for quantifi cation of Salmonella as follows: swabs and cages were placed in 50 mL of peptonewater buffered 1% (PW 1%) and incubated at 37ºC for 12 h; for the analysis of water 100 mL were inoculated in 50 mL ofpeptone water buffered in triple concentration and incubated at 37ºC for 12 h; the chickens and carcasses were packed insterile bags with a capacity of 4000 mL, added 150 mL of peptone water buffered 1%, agitated manually for one minuteand the rinsing broth incubated by 12 h at 37ºC. After hatching were made decimal dilutions Rapapport Vassiliadis broth(RV), inoculated 1 mL in 9 mL of RV broth until 10-3 dilution and incubation for 12 h at 41°C in a water bath with agitation. After this period 100 µL of RV broth were seeded in Agar Rambach and Agar XLD and the plates incubated at 37ºCfor 12 h. Salmonella-like growth were placed in Agar Rambach and confi rmed as Salmonella to biochemical tests (TSI,LIA, urea broth) and assayed for polyvalent antiserum to Salmonella. The fi nal identifi cation of the samples was carriedout by the Polymerase Chain Reaction (PCR, Premi® Test Salmonella DSM). Were selected 20 samples of Salmonella...

Antimicrobial resistance profile of Salmonella Heidelberg isolated from a poultry slaughterhouse in 2005 and 2009 / Perfil de resistência a antimicrobianos por Salmonella Heidelberg isoladas de abatedouro avícola em 2005 e 2009

Background: Salmonella spp. is recognized as being one of the most common bacterial causes of food-borne illness spreadon poultry production due to easy adaptation to environment and diffi cult to eradicate. In poultry production system antimicrobials are added in feed as growth promoters in continuous and sub-therapeutic doses, inducing a selective pressure andconsequent antimicrobial resistance. This management causes public health problems to disseminate resistant pathogensthrough food chain and reduce the options of treatment of bacterial infections.Materials, Methods & Results: The samples were isolated in a poultry slaughterhouse under Federal Inspection in amonitoring, research and quantifi cation project of Salmonella spp in critical control points in slaughterhouse. Adaptedmethodology was used for quantifi cation of Salmonella as follows: swabs and cages were placed in 50 mL of peptonewater buffered 1% (PW 1%) and incubated at 37ºC for 12 h; for the analysis of water 100 mL were inoculated in 50 mL ofpeptone water buffered in triple concentration and incubated at 37ºC for 12 h; the chickens and carcasses were packed insterile bags with a capacity of 4000 mL, added 150 mL of peptone water buffered 1%, agitated manually for one minuteand the rinsing broth incubated by 12 h at 37ºC. After hatching were made decimal dilutions Rapapport Vassiliadis broth(RV), inoculated 1 mL in 9 mL of RV broth until 10-3 dilution and incubation for 12 h at 41°C in a water bath with agitation. After this period 100 µL of RV broth were seeded in Agar Rambach and Agar XLD and the plates incubated at 37ºCfor 12 h. Salmonella-like growth were placed in Agar Rambach and confi rmed as Salmonella to biochemical tests (TSI,LIA, urea broth) and assayed for polyvalent antiserum to Salmonella. The fi nal identifi cation of the samples was carriedout by the Polymerase Chain Reaction (PCR, Premi® Test Salmonella DSM). Were selected 20 samples of Salmonella...(AU)

Salmonella and Listeria from stainless steel, polyurethane and polyethylene surfaces in the cutting room of a poultry slaughterhouse

Background: The cleaning process in poultry slaughterhouses consists basically on the use of hot water, detergents and disinfectants. The disinfection, which is the last stage of the cleaning process, seeks to reduce the number of total microorganisms and eliminating pathogen, so that levels are kept safe for good quality products. Pathogenic microorganisms such as Salmonella and Listeria are of utmost importance since they may cause foodborne diseases and consequently result in public health and economic losses in the domestic and in exporting markets. Materials, Methods & Results: This study was conducted in the cutting room of a poultry slaughterhouse with capacity to process 20.000 animals per hour in the Southern state of Rio Grande do Sul, Brazil. Samples were collected during preoperational cleaning: before the surfaces were washed (without the removal of residues); after washing with hot water at 45 to 50°C and 22.5 bar pressure; and after washing with 2% sodium hydroxide detergent. Three disinfectants were tested: 0.5% peracetic acid, 2% quaternary ammonium and 1% biguanide, all of them for 15 min, followed by rinsing with hot water. Evaluations were made in three processing lines for cutting chicken legs at the same time and on fully randomized sites of three surfaces: stainless steel tables, polyurethane conveyors, and polyethylene cutting boards. The pre-enrichment method used 100 mL of 1% peptone water added to a bag with the sponge. After 1 min in a stomacher blender, an aliquot of 50 mL was transferred to a sterilized container and incubated at 30 ± 1°C for 18-24 h to isolate Listeria while the remaining 100 mL was incubated at 36 ± 1°C for 16-20 h for the isolation of Salmonella. Selective enrichment for Salmonella was conducted in Rappaport-Vassiliadis medium and selenite cystine broth, for 24 to 30 h at 41 ± 0.5°C in a water bath. Isolation was conducted in chromogenic agar for Salmonella and brilliant-green phenol-red lactose sucrose agar, incubated at 36 ± 1°C for 18-24 h. Colonies compatible with Salmonella were confi rmed using biochemical and serological tests. For Listeria isolation, selective enrichment was performed in Fraser broth for 18-24 h at 30 ± 1°C, Listeria agar and Modifi ed Oxford - MOX agar, incubated at 35 ± 2°C for 24-48 h. Colonies compatible with Listeria spp. were confi rmed for L. monocytogenes and other species by using biochemical tests. Results were described as presence or absence of Salmonella or Listeria. Discussion: Salmonella was not found on the surfaces studied, which may be due to the fact that the batch of slaughtered broilers was free of this microorganism or that good production practices and hazard analysis and critical control points procedures in this industry were adequately applied. Listeria welshmeri was isolated from the polyurethane conveyor and Listeria monocytogenes from the stainless steel table, both when the surfaces had food residues, before washing. The isolation of different Listeria species on the same surface (polyurethane conveyor) may be explained by the fact that four different sites were examined for sample collection, and that there might have been different species simultaneously contaminating the surfaces on random sites. After washing with hot water, Listeria monocytogenes was still isolated from the polyurethane conveyor, but it was not isolated after disinfection with 2% quaternary ammonium. After this stage of disinfection, Listeria was no longer isolated, which indicates that the use of a detergent and posterior use of quaternary ammonium was effi cacious in removing the microorganisms from this surface.

Salmonella and Listeria from stainless steel, polyurethane and polyethylene surfaces in the cutting room of a poultry slaughterhouse / Salmonella and Listeria from stainless steel, polyurethane and polyethylene surfaces in the cutting room of a poultry slaughterhouse

Background: The cleaning process in poultry slaughterhouses consists basically on the use of hot water, detergents and disinfectants. The disinfection, which is the last stage of the cleaning process, seeks to reduce the number of total microorganisms and eliminating pathogen, so that levels are kept safe for good quality products. Pathogenic microorganisms such as Salmonella and Listeria are of utmost importance since they may cause foodborne diseases and consequently result in public health and economic losses in the domestic and in exporting markets. Materials, Methods & Results: This study was conducted in the cutting room of a poultry slaughterhouse with capacity to process 20.000 animals per hour in the Southern state of Rio Grande do Sul, Brazil. Samples were collected during preoperational cleaning: before the surfaces were washed (without the removal of residues); after washing with hot water at 45 to 50C and 22.5 bar pressure; and after washing with 2% sodium hydroxide detergent. Three disinfectants were tested: 0.5% peracetic acid, 2% quaternary ammonium and 1% biguanide, all of them for 15 min, followed by rinsing with hot water. Evaluations were made in three processing lines for cutting chicken legs at the same time and on fully randomized sites of three surfaces: stainless steel tables, polyurethane conveyors, and polyethylene cutting boards. The pre-enrichm

Background: The cleaning process in poultry slaughterhouses consists basically on the use of hot water, detergents and disinfectants. The disinfection, which is the last stage of the cleaning process, seeks to reduce the number of total microorganisms and eliminating pathogen, so that levels are kept safe for good quality products. Pathogenic microorganisms such as Salmonella and Listeria are of utmost importance since they may cause foodborne diseases and consequently result in public health and economic losses in the domestic and in exporting markets. Materials, Methods & Results: This study was conducted in the cutting room of a poultry slaughterhouse with capacity to process 20.000 animals per hour in the Southern state of Rio Grande do Sul, Brazil. Samples were collected during preoperational cleaning: before the surfaces were washed (without the removal of residues); after washing with hot water at 45 to 50C and 22.5 bar pressure; and after washing with 2% sodium hydroxide detergent. Three disinfectants were tested: 0.5% peracetic acid, 2% quaternary ammonium and 1% biguanide, all of them for 15 min, followed by rinsing with hot water. Evaluations were made in three processing lines for cutting chicken legs at the same time and on fully randomized sites of three surfaces: stainless steel tables, polyurethane conveyors, and polyethylene cutting boards. The pre-enrichm

Salmonella and Listeria from stainless steel, polyurethane and polyethylene surfaces in the cutting room of a poultry slaughterhouse / Salmonella and Listeria from stainless steel, polyurethane and polyethylene surfaces in the cutting room of a poultry slaughterhouse

Background: The cleaning process in poultry slaughterhouses consists basically on the use of hot water, detergents and disinfectants. The disinfection, which is the last stage of the cleaning process, seeks to reduce the number of total microorganisms and eliminating pathogen, so that levels are kept safe for good quality products. Pathogenic microorganisms such as Salmonella and Listeria are of utmost importance since they may cause foodborne diseases and consequently result in public health and economic losses in the domestic and in exporting markets. Materials, Methods & Results: This study was conducted in the cutting room of a poultry slaughterhouse with capacity to process 20.000 animals per hour in the Southern state of Rio Grande do Sul, Brazil. Samples were collected during preoperational cleaning: before the surfaces were washed (without the removal of residues); after washing with hot water at 45 to 50C and 22.5 bar pressure; and after washing with 2% sodium hydroxide detergent. Three disinfectants were tested: 0.5% peracetic acid, 2% quaternary ammonium and 1% biguanide, all of them for 15 min, followed by rinsing with hot water. Evaluations were made in three processing lines for cutting chicken legs at the same time and on fully randomized sites of three surfaces: stainless steel tables, polyurethane conveyors, and polyethylene cutting boards. The pre-enrichm

Background: The cleaning process in poultry slaughterhouses consists basically on the use of hot water, detergents and disinfectants. The disinfection, which is the last stage of the cleaning process, seeks to reduce the number of total microorganisms and eliminating pathogen, so that levels are kept safe for good quality products. Pathogenic microorganisms such as Salmonella and Listeria are of utmost importance since they may cause foodborne diseases and consequently result in public health and economic losses in the domestic and in exporting markets. Materials, Methods & Results: This study was conducted in the cutting room of a poultry slaughterhouse with capacity to process 20.000 animals per hour in the Southern state of Rio Grande do Sul, Brazil. Samples were collected during preoperational cleaning: before the surfaces were washed (without the removal of residues); after washing with hot water at 45 to 50C and 22.5 bar pressure; and after washing with 2% sodium hydroxide detergent. Three disinfectants were tested: 0.5% peracetic acid, 2% quaternary ammonium and 1% biguanide, all of them for 15 min, followed by rinsing with hot water. Evaluations were made in three processing lines for cutting chicken legs at the same time and on fully randomized sites of three surfaces: stainless steel tables, polyurethane conveyors, and polyethylene cutting boards. The pre-enrichm

Avaliação in vitro de clorexidina, amônia quaternária e ácido peracético frente a amostras de Salmonella Heidelberg isoladas de abatedouro avícola em 2005 e 2009 / In vitro evaluation of chlorhexidine, quaternary ammonium and peracetic acid against Salmonella Heidelberg isolated from poultry slaughterhouse in 2005 and 2009

Objetivou-se avaliar a ação de três princípios ativos rotineiramente utilizados na higienização de abatedouros avícolas frente a amostras de Salmonella Heidelberg isoladas em diferentes pontos da tecnologia de abate de um mesmo frigorífico. Foram testadas 20 amostras de S. Heidelberg (14 isoladas em 2005 e seis em 2009) frente a clorexidina (0,5%), amônia quaternária (0,5%) e ácido peracético (1%) nos tempos de contato de 5, 10, 15 e 20 minutos. Todas as amostras foram sensíveis ao ácido peracético 1% em todos os tempos testados. Observou-se que 100% das amostras isoladas em 2005 foram sensíveis a amônia quaternária enquanto que as isoladas em 2009 apresentaram 33% de resistência com 5 minutos de contato e 16,6% com 10 minutos de contato. Com relação à clorexidina, 25% dos isolados em 2005 mostraram-se resistentes após 5 minutos de contato enquanto que 33% das amostras isoladas em 2009 foram resistentes neste tempo e 17% no tempo de 10 minutos de contato. Pode-se concluir que o ácido peracético teve ação in vitro sobre as amostras isoladas em 2005 e 2009, enquanto que a clorexidina e a amônia quaternária tiveram sua ação reduzida frente às amostras de 2009, indicando a progressão da resistência bacteriana frente a estes sanitizantes e a necessidade de testes periódicos e rotação de princípios ativos nos programas de higienização dos frigoríficos.(AU)

The objective of this investigation was to evaluate the in vitro sensibility of Salmonella Heidelberg to three commercially available disinfectants used for sanitization in poultry slaughterhouses. A total of 20 S. Heidelberg were tested (14 isolated in 2005 and six in 2009), and as active ingredients were used chlorhexidine (0.5%), quaternary ammonium (0.5 %) and peracetic acid (1%) at contact intervals of 5, 10, 15 e 20 minutes. All isolates were found to be sensitive to peracetic acid at four specific contact intervals. One hundred percent of S. Heidelberg isolated in 2005 was found to be sensitive to quaternary ammonium, while 33% of 2009 isolates were resistant at a 5-minute contact interval and 16.6% at 10-minutes. With respect to chlorhexidine, 25% of the 2005 isolates were resistant at a 5-minute contact interval, 33% of the 2009 isolates were resistant with the same time, and 17% at a 10-minute contact interval. It can be concluded that the highest disinfectant activity in vitro was found to be with peracetic acid for S. Heidelberg isolates in 2005 and 2009, whereas chlorhexidine and quaternary ammonium had a reduced action against 2009 isolates, indicating the progression of bacterial resistance against these sanitizers and the need for periodic evaluation and rotation of active principles for sanitization.(AU)

Avaliação in vitro de clorexidina, amônia quaternária e ácido peracético frente a amostras de Salmonella Heidelberg isoladas de abatedouro avícola em 2005 e 2009 / In vitro evaluation of chlorhexidine, quaternary ammonium and peracetic acid against Salmonella Heidelberg isolated from poultry slaughterhouse in 2005 and 2009

Objetivou-se avaliar a ação de três princípios ativos rotineiramente utilizados na higienização de abatedouros avícolas frente a amostras de Salmonella Heidelberg isoladas em diferentes pontos da tecnologia de abate de um mesmo frigorífico. Foram testadas 20 amostras de S. Heidelberg (14 isoladas em 2005 e seis em 2009) frente a clorexidina (0,5%), amônia quaternária (0,5%) e ácido peracético (1%) nos tempos de contato de 5, 10, 15 e 20 minutos. Todas as amostras foram sensíveis ao ácido peracético 1% em todos os tempos testados. Observou-se que 100% das amostras isoladas em 2005 foram sensíveis a amônia quaternária enquanto que as isoladas em 2009 apresentaram 33% de resistência com 5 minutos de contato e 16,6% com 10 minutos de contato. Com relação à clorexidina, 25% dos isolados em 2005 mostraram-se resistentes após 5 minutos de contato enquanto que 33% das amostras isoladas em 2009 foram resistentes neste tempo e 17% no tempo de 10 minutos de contato. Pode-se concluir que o ácido peracético teve ação in vitro sobre as amostras isoladas em 2005 e 2009, enquanto que a clorexidina e a amônia quaternária tiveram sua ação reduzida frente às amostras de 2009, indicando a progressão da resistência bacteriana frente a estes sanitizantes e a necessidade de testes periódicos e rotação de princípios ativos nos programas de higienização dos frigoríficos.

The objective of this investigation was to evaluate the in vitro sensibility of Salmonella Heidelberg to three commercially available disinfectants used for sanitization in poultry slaughterhouses. A total of 20 S. Heidelberg were tested (14 isolated in 2005 and six in 2009), and as active ingredients were used chlorhexidine (0.5%), quaternary ammonium (0.5 %) and peracetic acid (1%) at contact intervals of 5, 10, 15 e 20 minutes. All isolates were found to be sensitive to peracetic acid at four specific contact intervals. One hundred percent of S. Heidelberg isolated in 2005 was found to be sensitive to quaternary ammonium, while 33% of 2009 isolates were resistant at a 5-minute contact interval and 16.6% at 10-minutes. With respect to chlorhexidine, 25% of the 2005 isolates were resistant at a 5-minute contact interval, 33% of the 2009 isolates were resistant with the same time, and 17% at a 10-minute contact interval. It can be concluded that the highest disinfectant activity in vitro was found to be with peracetic acid for S. Heidelberg isolates in 2005 and 2009, whereas chlorhexidine and quaternary ammonium had a reduced action against 2009 isolates, indicating the progression of bacterial resistance against these sanitizers and the need for periodic evaluation and rotation of active principles for sanitization.