Three Months of Composting Are Enough to Eliminate the Fowl Typhoid Bacteria

The composting technique has been increasingly highlighted in poultry production units, as an efficient and low-cost solution for the destination of carcasses. The process is based on the accelerated decomposition of organic material under high temperatures, associated with eliminating pathogenic microorganisms. This study aims to evaluate the effectiveness and the time necessary for the elimination of Salmonella Gallinarum in carcasses of poultry submitted to the composting process. The composting was carried out following the models used in the field, and microbiological analysis was performed in five different periods: 45, 90, 120, 150 and 180-days after closing the composter. After 90 days of experiment and in the subsequent analysis, the elimination of the bacteria in 100% of the samples was verified, validating the composting process as an effective method for eliminating S. Gallinarum in poultry carcasses, when respecting the period necessary for the elimination of the bacteria and the good quality of the structure adopted for the process.(AU)

Inclusion of Organic Acids in the Drinking Water and Feed for the Control of Salmonella Heidelberg in Broilers

Poultry products may be a source of foodborne human salmonellosis. The use of alternatives to antimicrobials that are not harmful to humans may reduce the presence of Salmonella spp. in poultry production. Among the products used, organic acids stand out. In the present study, three different organic acid (OA) blends were evaluated for the control of Salmonella Heidelberg (SH) in commercial broilers. Day-old chicks (n = 114) were randomly assigned to four treatments, with three replicates of 12 birds each. Birds in treatments A and B received SCFA (0.2mL/L) and SCFA + MCFA (0.2mL/L), respectively, in the drinking water, while birds in treatment C received SCFA + MCFA in the feed (2g/Kg of feed). Birds from treatment D did not receive OAs (control group). At 8 days of age, each bird was orally inoculated with SH at 108 CFU/mL, and cloacal swabs and SH enumeration of the cecal content were performed 24-, 48-, and 72-hours post-inoculation (hpi). The results show a reduction of both SH shedding and counts in the birds fed OAs at all pi times relative to the control birds. Fecal shedding was significantly lower in the OA-treated groups compared with the control group. As for SH presence in the cecum, significant differences were detected between groups C and D at 24 and 72 hpi, and between groups B and D at 72 hpi. The results of this study indicate that the use of feeding OAs to broilers may contribute to reduce the incidence of SH in the poultry production chain, allowing better flock health management, provided an efficient biosecurity program is employed.(AU)

Antimicrobial Resistance in Salmonella Serovars Isolated From an Egg-Producing Region in Brazil

Fowl paratyphoid infections are caused by different Salmonella serovars that can affect a wide range of hosts. Due to its complex epidemiology, Salmonella serovar identification is crucial for the development and implementation of monitoring and control programs in poultry farms. Moreover, the characterization of the antimicrobial resistance profiles of Salmonella strains isolated from livestock is relevant to public health because they are a common causative agent of foodborne diseases. The objective of this study was to investigate the presence of Salmonella spp. and to identify the antimicrobial resistance profiles of strains isolated in the midwestern region of São Paulo state, which accounts for the highest production of table eggs in Brazil. For this purpose, 2008 fecal samples were collected on 151 commercial layer farms and submitted to microbiological analyses. Twenty-two serovars were isolated from 80 (52.9%) farms, among which S. Mbandaka and S. Braenderup were the most prevalent. All isolates expressed resistance to at least one of the 23 antimicrobials tested, and the highest resistance rates were determined against streptomycin (93.5%) and sulfonamide (84.6%). Moreover, multidrug resistance was observed in 41% of the isolates and the maximum drug resistance profile was against ten different antimicrobials. Therefore, the identification of Salmonella serovars in poultry production provides epidemiological knowledge to develop prevention and control measures in order to ensure poultry health and to prevent human infection by multiresistant strains.(AU)

Antimicrobial Resistance in Salmonella Serovars Isolated From an Egg-Producing Region in Brazil

Fowl paratyphoid infections are caused by different Salmonella serovars that can affect a wide range of hosts. Due to its complex epidemiology, Salmonella serovar identification is crucial for the development and implementation of monitoring and control programs in poultry farms. Moreover, the characterization of the antimicrobial resistance profiles of Salmonella strains isolated from livestock is relevant to public health because they are a common causative agent of foodborne diseases. The objective of this study was to investigate the presence of Salmonella spp. and to identify the antimicrobial resistance profiles of strains isolated in the midwestern region of São Paulo state, which accounts for the highest production of table eggs in Brazil. For this purpose, 2008 fecal samples were collected on 151 commercial layer farms and submitted to microbiological analyses. Twenty-two serovars were isolated from 80 (52.9%) farms, among which S. Mbandaka and S. Braenderup were the most prevalent. All isolates expressed resistance to at least one of the 23 antimicrobials tested, and the highest resistance rates were determined against streptomycin (93.5%) and sulfonamide (84.6%). Moreover, multidrug resistance was observed in 41% of the isolates and the maximum drug resistance profile was against ten different antimicrobials. Therefore, the identification of Salmonella serovars in poultry production provides epidemiological knowledge to develop prevention and control measures in order to ensure poultry health and to prevent human infection by multiresistant strains.

Performance and Serum Biochemical Profile of Broiler Chickens Supplemented with Piper Cubeba Ethanolic Extract

Piper cubeba is an Asian pepper used in popular medicine for its known antimicrobial, antiparasitic, and anti-inflammatory actions. The study evaluated the effects of dietary inclusion of Piper cubeba ethanolic extract (PE) as a replacement for anantibiotic growth promoter (AGP) on the performance and biochemical serum profile of 1- to 21-d-old broilers (Cobb®). Two hundred one-d-old broilers were housed in experimental battery cages and distributed in a completely randomized design. The following treatments were applied: negative control (NC) - basal diet; positive control (PC) - basal diet with addition of AGP; and the basal diet with inclusion of 0.17%, 0.34%, and 0.52% of PE (NCE1, NCE2, and NCE3, respectively). Growth performance, biochemical serum profile and internal organ weights were evaluated. Birds fed the AGP presented higher feed intake compared with the other treatments (p 0.05). The PC, NC, and NCE1 treatments presented higher weight gain compared with those fed NCE2 and NCE3 (p 0.05). The NC, NCE1, and NCE2 diets promoted better feed conversion ratio than the PC and NCE3 (p 0.05). Lower triglyceride serum levels were determined in broilers fed the NC and NCE1 diets. Amylase serum levels were lower in NCE1 and NCE2 treatments compared with the NC (p 0.05), whereas those obtained with the PC and NCE3 diets were not different (p>0.05) from the others. Organ relative weights were not influenced by the treatments. The inclusion of 0.17% of PE did not compromise the growth performance, biochemical serum profile or organ relative weights of 21-d-old broilers.(AU)

Duplex Real-Time PCR Using Sybr Green I for Quantification and Differential Diagnosis between Salmonella Enteritidis and Salmonella Typhimurium

The incidence of foodborne diseases caused by the genus Salmonella spp. in industrialized countries is often high in epidemiological surveys. Obtaining a rapid diagnostic test for identification of bacteria is crucial in order to rapidly implement control measures to contain bacterial spread, to reduce losses in animal production and to avoid risks from food-borne infections to human health. The aim of this study was to standardize duplex real-time PCR using SYBr Green I for differential and quantitative diagnosis of S. Typhimurium and S. Enteritidis. According to the experiment, the melting temperature of 85°C was observed for a 206bp amplified product when S. Enteritidis DNA was added to the reaction. S. Typhimurium DNA showed that the melting temperature of 79°C when observed for a 62bp amplified product. The standard curve showed the high sensitivity of the proposed test, since it was possible to obtain eight quantification points, starting at 108 CFU/mL and ending at 101 CFU/mL. As a result of the present study, a real-time PCR duplex reaction with high sensitivity, specificity and based on the fluorescence of SYBr Green I was standardized. In addition, this methodology aligns low cost to the faster diagnostic result, in relation to other molecular tests, making it attractive for application in routine laboratory analyzes.(AU)

Performance and Serum Biochemical Profile of Broiler Chickens Supplemented with Piper Cubeba Ethanolic Extract

Piper cubeba is an Asian pepper used in popular medicine for its known antimicrobial, antiparasitic, and anti-inflammatory actions. The study evaluated the effects of dietary inclusion of Piper cubeba ethanolic extract (PE) as a replacement for anantibiotic growth promoter (AGP) on the performance and biochemical serum profile of 1- to 21-d-old broilers (Cobb®). Two hundred one-d-old broilers were housed in experimental battery cages and distributed in a completely randomized design. The following treatments were applied: negative control (NC) - basal diet; positive control (PC) - basal diet with addition of AGP; and the basal diet with inclusion of 0.17%, 0.34%, and 0.52% of PE (NCE1, NCE2, and NCE3, respectively). Growth performance, biochemical serum profile and internal organ weights were evaluated. Birds fed the AGP presented higher feed intake compared with the other treatments (p 0.05). The PC, NC, and NCE1 treatments presented higher weight gain compared with those fed NCE2 and NCE3 (p 0.05). The NC, NCE1, and NCE2 diets promoted better feed conversion ratio than the PC and NCE3 (p 0.05). Lower triglyceride serum levels were determined in broilers fed the NC and NCE1 diets. Amylase serum levels were lower in NCE1 and NCE2 treatments compared with the NC (p 0.05), whereas those obtained with the PC and NCE3 diets were not different (p>0.05) from the others. Organ relative weights were not influenced by the treatments. The inclusion of 0.17% of PE did not compromise the growth performance, biochemical serum profile or organ relative weights of 21-d-old broilers.

Duplex Real-Time PCR Using Sybr Green I for Quantification and Differential Diagnosis between Salmonella Enteritidis and Salmonella Typhimurium

The incidence of foodborne diseases caused by the genus Salmonella spp. in industrialized countries is often high in epidemiological surveys. Obtaining a rapid diagnostic test for identification of bacteria is crucial in order to rapidly implement control measures to contain bacterial spread, to reduce losses in animal production and to avoid risks from food-borne infections to human health. The aim of this study was to standardize duplex real-time PCR using SYBr Green I for differential and quantitative diagnosis of S. Typhimurium and S. Enteritidis. According to the experiment, the melting temperature of 85°C was observed for a 206bp amplified product when S. Enteritidis DNA was added to the reaction. S. Typhimurium DNA showed that the melting temperature of 79°C when observed for a 62bp amplified product. The standard curve showed the high sensitivity of the proposed test, since it was possible to obtain eight quantification points, starting at 108 CFU/mL and ending at 101 CFU/mL. As a result of the present study, a real-time PCR duplex reaction with high sensitivity, specificity and based on the fluorescence of SYBr Green I was standardized. In addition, this methodology aligns low cost to the faster diagnostic result, in relation to other molecular tests, making it attractive for application in routine laboratory analyzes.

Ocorrência da brucelose canina em cães em co-habitação com bovinos, na zona rural de andradina/sp / occurrence of canine brucellosis in dogs co-habitating with cattle in the rural area of andradina, sp

A brucelose é causada por microrganismos da família Brucellaceae, gênero Brucella. É uma doença importante, do ponto de vista da saúde e também do econômico e está incluída no contexto das doenças transmitidas por alimentos. Em virtude do potencial da pecuária de corte e de leite regional e do impacto econômico que a brucelose bovina pode causar na economia, impunha-se uma investigação criteriosa sobre a possível ocorrência de Brucelose nos cães criados na zona rural de Andradina/SP e circunvizinhanças. O experimento foi conduzido na zona rural do município de Andradina-SP, onde foram colhidas cem amostras de sangue de cães adultos, de ambos os sexos e sem raça definida, através de flebocentese da veia cefálica. As amostras depois de coletadas foram acondicionadas em tubos de ensaio e em seguida enviadas ao Lab. Clínico do HV da Fundação Educacional de Andradina, sendo então centrifugadas, posteriormente dessoradas e só então submetidas à Prova do Antígeno Acidificado Tamponado (AAT). Os resultados obtidos com a pesquisa demonstram que,

DISTRIBUIÇÃO ESPACIAL DE ACIDENTES POR ANIMAIS PEÇONHENTOS NO ESTADO DE SÃO PAULO ENTRE OS ANOS DE 2007 E 2012

Os acidentes por animais peçonhentos são de notificação obrigatória, pois suas informações permitem dar subsídios ao controle e prevenção, além da produção e distribuição dos diferentes tipos de soro existentes no país. As notificações são, então, realizadas pelo SINAN quando ocorrem acidentes com serpentes, escorpiões, aranhas, taturanas, lagartas e abelhas. O objetivo do estudo foi analisar e avaliar a distribuição espacial dos acidentes por animais peçonhentos no Estado de São Paulo entre os anos de 2007 e 2012. Os dados foram obtidos no SINAN, IBGE e CATI. Posteriormente, foram tabulados no Excel® e geoprocessados no MapInfo. Observa-se no mapa grid que os acidentes se concentraram em 15 municípios ao longo das regiões nordeste, leste e sudeste do Estado, tendo uma taxa de incidência de 2,1/1000 habitantes. A alta incidência de casos em municípios populosos como São Paulo, Campinas e Ribeirão Preto, pode ser explicada através do crescimento urbano associado ao desmatamento do habitat natural, acúmulo de lixo, necessidade de abrigo e a busca por alimentos, dos quais atraem principalmente escorpiões, aranhas e serpentes. Olímpia, Araraquara, Piracicaba e Patrocínio Paulista possuem alta produção de cana-de-açúcar, fato que contribui para serem os quatro municípios com maior número de casos, pois os estoques da produção dessas lavouras aproximam os roedores, atraindo as serpen

OCORRÊNCIA DA BRUCELOSE CANINA EM CÃES EM CO-HABITAÇÃO COM BOVINOS, NA ZONA RURAL DE ANDRADINA/SP / OCCURRENCE OF CANINE BRUCELLOSIS IN DOGS CO-HABITATING WITH CATTLE IN THE RURAL AREA OF ANDRADINA, SP

A brucelose é causada por microrganismos da família Brucellaceae, gênero Brucella. É uma doença importante, do ponto de vista da saúde e também do econômico e está incluída no contexto das doenças transmitidas por alimentos. Em virtude do potencial da pecuária de corte e de leite regional e do impacto econômico que a brucelose bovina pode causar na economia, impunha-se uma investigação criteriosa sobre a possível ocorrência de Brucelose nos cães criados na zona rural de Andradina/SP e circunvizinhanças. O experimento foi conduzido na zona rural do município de Andradina-SP, onde foram colhidas cem amostras de sangue de cães adultos, de ambos os sexos e sem raça definida, através de flebocentese da veia cefálica. As amostras depois de coletadas foram acondicionadas em tubos de ensaio e em seguida enviadas ao Lab. Clínico do HV da Fundação Educacional de Andradina, sendo então centrifugadas, posteriormente dessoradas e só então submetidas à Prova do Antígeno Acidificado Tamponado (AAT). Os resultados obtidos com a pesquisa demonstram que,