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1.
Meat Sci ; 195: 109010, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36279809

RESUMO

Over the years, the handling of goats (loading, transport, unloading, time spent in lairage) prior to slaughter as well as the slaughter process (stunning, and bleeding) has largely applied to other livestock which impairs the wellbeing of goats as well as their products due to the difference in behavior among species. Numerous factors (feeding management, production systems, environmental conditions, and physiological status of the animals) predispose goats to pre-slaughter stress, resulting in increased stress responses during the transport, lairage, and slaughter process that influence the meat quality attributes. Goats are more susceptible to pre-slaughter stress relative to other ruminants. In this review, stress factors relating to goats, indicators as well as management, were elucidated which will assist producers in making informed decisions on minimizing goat stress for the betterment of the meat quality and goat industry as a whole.


Assuntos
Matadouros , Cabras , Animais , Carne/análise , Estresse Fisiológico
2.
Meat Sci ; 195: 109017, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36343448

RESUMO

Slaughterhouse workers are strategic capital for the meat industry in terms of operational and animal welfare issues; however, information about the attitudes of workers toward the human-animal relationship is limited. The main aim of our study was to identify the profiles of workers based on their attitudes toward pigs, occupational satisfaction, sociodemographics, and animal handling. The survey included 171 workers in 12 Colombian pig slaughterhouses. A factor analysis and a hierarchical cluster analysis identified four segments or worker profiles. The first comprised workers who relate to animals and their work in a mechanical way, the second comprised professional workers who are emotionally close to animals, the third comprised those committed to animals and their work, and the fourth comprised workers who are apathetic toward animals and work activity. The human-animal relationship at the slaughterhouse level is multifaceted, but is influenced by dependent on work satisfaction and sympathy toward the animals.


Assuntos
Matadouros , Bem-Estar do Animal , Humanos , Suínos , Animais , Carne , Inquéritos e Questionários , Atitude
3.
PLoS One ; 17(11): e0277609, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36374923

RESUMO

Alternatives to conventional chicken meat and egg production are increasingly under discussion, especially because of the common practice of killing male day-old chicks from laying lines which has been banned from the beginning of 2022 in Germany and is planned to be banned during 2022 in other countries. Production of dual-purpose chicken lines is one possible solution, as such lines combine moderate laying and growth performance. The microbiological status of products from such breeds must be comparable to existing products on the market for food safety purposes. Additionally, the production of such products will take longer because of the feeding regimes required, and again, comparability should be safeguarded for the best consumer protection. The dual-purpose chicken line, Lohmann Dual (males), was compared to males from the laying line Lohmann Brown Plus, conventional laying hens (all slaughtered and processed in the same conventional laying hen abattoir), and conventional broilers (slaughtered in a conventional broiler abattoir). Neck skin samples were taken before chilling at the end of each slaughter line to determine the microbial status of the carcasses. Additionally, fresh and cooked meat sensory analysis was performed on meat from broilers and male and female Lohmann Dual and Lohmann Brown Plus chickens (for three carcasses of each group) at the German Agricultural Society Test Center in Kassel. The focus was on the performance of male Lohmann Dual compared to the other lines. There was no difference in the Enterobacteriaceae count of the dual-purpose chicken line compared to conventional broilers, whereas laying hens had a significantly higher microbial load before chilling, as based on neck skin examinations (p<0.001). According to sensory test results, the meat from dual-purpose chickens was the best (as no defects were found) among the five chicken meat types examined. In conclusion, based on their microbial status and sensory analysis of fresh and cooked meat, Lohmann Dual males slaughtered in a laying hen abattoir can be considered as an alternative to conventionally kept broilers slaughtered in a broiler abattoir.


Assuntos
Ração Animal , Galinhas , Animais , Feminino , Masculino , Ração Animal/análise , Matadouros , Dieta/veterinária , Carne/análise
4.
Appl Opt ; 61(22): 6590-6598, 2022 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-36255885

RESUMO

In this work, we evaluated the potential application of fluorescence spectroscopy, associated with the canonical polyadic/parallel factor analysis and principal component analysis, to monitor the dissolved organic matter (DOM) generated from a slaughterhouse industry. During the monitoring process, we analyzed the residual water at the entrance and exit sites of the slaughterhouse effluent treatment as well as downstream and upstream the effluent receiving water body of a local river. The results revealed that the fluorescence analysis was able to identify proteins, chlorophylls, and humic substances at the entrance and exit sites of the slaughterhouse treatment plant and humic substances at the river water bodies. Our data also demonstrated that the industrial effluent discharged into the river did not impact the receiving water body quality as determined by the biological and humification indices obtained by fluorescence analysis, which was confirmed by conventional physicochemical analysis. In summary, the present findings indicate that fluorescence spectroscopy, in association with multivariate analysis, can be successfully applied as an analytical tool for evaluating the quality of DOM in slaughterhouse wastewater.


Assuntos
Substâncias Húmicas , Águas Residuárias , Bovinos , Animais , Águas Residuárias/análise , Águas Residuárias/química , Substâncias Húmicas/análise , Espectrometria de Fluorescência/métodos , Matéria Orgânica Dissolvida , Matadouros , Água
5.
Artigo em Inglês | MEDLINE | ID: mdl-36193026

RESUMO

The article aimed to investigate performance and evaluation of combining chemical coagulation pretreatment unit with a pilot-scale fourth generation downflow hanging sponge (DHS-4G) for slaughterhouse wastewater (SWW) treatment. This combination of compact treatment technique was tested as a novel system for the treatment of SWW. A DHS-4G reactor with a capacity of about 100 liters was installed after a 1 m3 chemical treatment unit and operated under two different hydraulic retention times (HRT) namely 12 h and 8 h. The integrated treatment system gave reasonable organic and nitrogen removal efficiencies and the removal efficiency was 91%, and 87% for COD, 92%, and 88% for BOD and 94%, and 84% for TSS at HRT 12 h, and 8 h respectively. Profile analysis showed that most of solids and organic matter particles were entrapped in the top segments of the reactor, while in the middle part residual and soluble organic matter were biologically degraded and the bottom segment slightly removes small residuals and nitrogen compounds. Also, analysis of retained biomass indicated that sludge retention time (SRT) was 27 days, which indicated low sludge amount produced from the reactor. Accordingly, the use of the studied integrated treatment system is very effective in terms of treatment cost and quality as it achieved required treatment in shorter time and minimum requirements for construction and operation.


Assuntos
Esgotos , Purificação da Água , Esgotos/química , Eliminação de Resíduos Líquidos/métodos , Águas Residuárias/química , Reatores Biológicos , Matadouros , Purificação da Água/métodos , Compostos de Nitrogênio
8.
Vet Rec ; 191(8): 347, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36269254
9.
J Environ Manage ; 323: 116322, 2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36261972

RESUMO

Sufficient and reliable long-term field data on the growth, productivity and nutrient removal rates of microalgal based wastewater treatment system is essential to validate its overall techno-economic feasibility. Here, we investigated the semi-continuous microalgal cultivation of Scenedesmus sp. in anaerobically digested abattoir effluent (ADAE) for 13 months in outdoor raceway ponds operated at 20 cm depth. This study was initiated with three different cultures consisting of 1) monocultures of Chlorella sp., 2) Scenedesmus sp., and 3) an equal mixed concentration of both microalgae species. However, after 15 weeks, Scenedesmus sp. was found to be the most dominant microalgae species in all the different cultures, even completely taking over the Chlorella sp. monoculture. Over the course of summer and early autumn, the average weekly biomass productivity of Scenedesmus sp. cultures was 12.5 ± 0.6 g m-2 d-1 which was 16% and 30% higher than productivities recorded in spring and winter, respectively. All available ammoniacal nitrogen (NH3-N) was found to be exhausted during each growth period with an average 33.6% nitrogen assimilation rate. The average rate of phosphate and COD (chemical oxygen demand) removals were 85.2% and 37.5% throughout the cultivation period. No significant differences were found in carbohydrate, lipid and protein content of Scenedesmus sp. during different seasons of the year. Over 53% increase in biomass productivity can be achieved if CO2 is added to control culture pH at pH 6.5. Here, we successfully demonstrated reliability of continuous long-term cultivation of microalgae in ADAE for simultaneous wastewater treatment and algal biomass production.


Assuntos
Chlorella , Microalgas , Scenedesmus , Matadouros , Dióxido de Carbono , Reprodutibilidade dos Testes , Nitrogênio , Fosfatos , Carboidratos , Lipídeos
10.
PLoS One ; 17(10): e0276625, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36269734

RESUMO

Thermophilic Campylobacter species are common cause of animal and human bacterial diseases with growing resistance to antimicrobials. The aim of this study was to determine the prevalence and antimicrobial susceptibility pattern of Campylobacter species from bovine, knives and personnel in Jimma Town, Ethiopia. Faecal samples and carcasses swabs were collected from cattle systematically selected from the annual plan of Jimma Municipal Abattoir. Personnel hand and knife swabs were collected after slaughtering each selected cattle. A cross-sectional study with systematic sampling method was conducted from October 2019 to September 2020 for the isolation, identification and antimicrobial susceptibility pattern of thermophilic Campylobacter species. Isolation and identification of Campylobacter species were performed according to the techniques recommended by the International Organization for Standardization, and in vitro antibiotic susceptibility testing was screened using the standard agar disc diffusion method as recommended by Clinical and Laboratory Standards Institutions. A total of 684 samples (171 samples from faeces, carcasses, knives and personnel hands, were collected independently). The overall prevalence of thermophilic Campylobacterspecies was 5.6% (38/684). Majority of the isolates were from faecal samples (12.9%, n = 22) followed by carcass swabs(4.1% n = 7), knife swabs(3.5% n = 6) and personnel hand swabs(1.8% n = 3). Isolated and identified species of C.jejuni, C. coli and C. lari accounted for 63.2%, 23.7% and 13.2%, respectively. The isolated Campylobacter species were found to be resistant to Cephalothin (100%), Ampicillin (60.5%), Cefotaxime (60.5%), Chloramphenicol (47.4%) and Tetracycline (42.1%). On the other hand, the isolates were susceptible to Nalidixic acid (86.8%), Ciprofloxacin (86.8%), Sulphamethazole (84.2%), Ceftriaxone (78.9%), Clindamycin (68.4%) and Cefixime (65.8%). 84.2% of the isolates showed multi-drug resistance for three-to-six drug classes. All the C. lari isolates were multidrug resistant. All the three isolated species of Campylobacter were resistant to Cephalothin, and most were multidrug resistant. Isolation of Campylobacter species from faecal, carcass, knife and hand swabs revealed possible risk of contamination and exposure to Campylobacter infection of those who consume raw meat. Therefore, enactment of hygienic practices during the slaughtering process, proper handling and cooking of meat and awareness creation on jurisdictional antibiotic usage are required to avoid Campylobacter infection.


Assuntos
Infecções por Campylobacter , Campylobacter , Bovinos , Animais , Humanos , Infecções por Campylobacter/microbiologia , Matadouros , Ácido Nalidíxico , Cefalotina , Estudos Transversais , Cefixima , Ceftriaxona , Clindamicina , Ágar , Etiópia/epidemiologia , Resistência Microbiana a Medicamentos , Antibacterianos/farmacologia , Tetraciclina , Ciprofloxacina , Cloranfenicol/farmacologia , Ampicilina , Testes de Sensibilidade Microbiana , Farmacorresistência Bacteriana
11.
PLoS One ; 17(10): e0275259, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36206240

RESUMO

Slaughterhouse or meat factory surveillance to detect factory lesions (FL) at slaughter is an important part of the bovine tuberculosis (bTB) eradication program in Ireland. The objective of this study was to quantify the effectiveness of Irish slaughterhouses or factories in submitting FL and the proportion of those submitted FL confirmed as being due to bTB in slaughtered cattle, and to identify and quantify the association of risk factors at animal, herd, and factory level with FL submission and confirmation. The data consisted of 6,611,854 animals slaughtered in Irish factories from 2014 to 2018 obtained from the Department of Agriculture, Food and Marine (DAFM), Ireland. Selected risk factors for this study included factory, year and month of slaughter, age, sex, breed, animal movement, ever inconclusive in the standard or severe skin test, herd type, herd size, and bTB history. The association of each risk factor on the FL submission and confirmation risk were analysed with univariable followed by a multivariable logistic regression with herd as random effect. Factories were ranked and compared based on the odds ratio (OR) obtained from the univariable (crude OR) and multivariable (adjusted OR) analysis. The average submission risk of all factories was 20 per 10,000 animals slaughtered, ranging from 1 to 42 per 10,000 animals slaughtered, and the average confirmation risk over all factories was 40.72%, ranging from 0.00 to 61.84%. The odds of submitting and confirming FL as bTB positive were higher in animals over eight years old compared to animals 1-2 years old (OR = 1.91, 95 CI 95% 1.77-2.06 and OR = 4.05, 95% CI 3.17-5.18, respectively), and were higher in animals that ever had inconclusive skin result based on severe interpretation (OR = 2.83, 95% CI 2.44-3.27 and OR = 4.48, 95% CI 2.66-7.54, respectively), animals originating from sucklers herds (OR = 1.08, 95% CI 1.02-1.14 and OR = 1.31, 95% CI 1.11-1.55, respectively), or herds with bTB history in the past three years (OR = 4.46, 95% CI 4.28-4.66 and OR = 319.90, 95% CI 237.98-430.04, respectively). The odds of FL submission and confirmation decreased as the herd size increased (OR = 0.95, 95% CI 0.93-0.96 and OR = 0.82, 95% CI 0.78-0.86, respectively). An inverse relationship of FL submission and confirmation was present for variable sex and inconclusive skin result with standard interpretation, where submission odds were higher in males (OR = 1.05, 95% CI 1.00-1.10) and ever inconclusive animals (OR = 74.24, 95% CI 69.39-79.43), although the confirmation odds were lower (males OR = 0.66, 95% CI 0.56-0.76; ever inconclusive OR = 0.44, 95% CI 0.36-0.54). The crude and adjusted ranking of factories did not differ greatly for FL submission, indicating that factory-related factors may contribute significantly to the submission variation between factories. However, a substantial difference between crude and adjusted confirmation ranking was present which may indicate that animal and herd-related factors were associated to variation in confirmation risk between factories.


Assuntos
Matadouros , Tuberculose Bovina , Animais , Bovinos , Irlanda/epidemiologia , Modelos Logísticos , Masculino , Fatores de Risco , Tuberculose Bovina/diagnóstico , Tuberculose Bovina/epidemiologia , Tuberculose Bovina/patologia
12.
Prev Vet Med ; 209: 105772, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36283188

RESUMO

Reducing the risk of Salmonella contaminated pork products entering the food chain is important for improving food safety. This study aimed to evaluate the effectiveness of the short-duration use of three acidified feed interventions in finisher pigs for reducing the faecal shedding, caecal carriage and carcase contamination of Salmonella at slaughter. We also investigated the presence of Salmonella in transportation vehicles and abattoir lairages used prior to slaughter. In a series of seven farm trials, two groups of pigs received either their normal ration (control), or a ration containing one of three organic acid products (intervention) for a four-week period before slaughter. Product A was trialled on five farms, and Products B and C were trialled on one farm each, included in the ration of intervention pigs at the manufacturers recommended rate. Faecal samples were collected and examined before and after the four-week intervention; caecal content samples and carcase swab samples were collected at slaughter. The lorry used to transport pigs to slaughter and abattoir lairage pens used to hold pigs were also sampled. During one trial (farm ID: AT03), no Salmonella was detected during either farm visit, and therefore this farm was excluded from further analysis of the effectiveness of organic acid interventions. Overall regression analysis indicated there was no significant difference in faecal shedding between the control groups at the baseline visit and the follow-up visit in pigs which received Product A (P = 0.262) or Product B (P = 0.094) in comparison to the control groups. On the other hand, there was evidence to suggest that the use of Product C was associated with an increase in faecal shedding compared to the control groups (P < 0.001). Similarly, Product A was not significantly associated (P > 0.05) with the caecal carriage of Salmonella. However, Product B (P = 0.029) and Product C (P = 0.050) were associated with an increase in caecal carriage in comparison to the control groups. These latter products were only trialled on one farm each, and these results may be attributable to natural random variation.


Assuntos
Salmonelose Animal , Doenças dos Suínos , Suínos , Animais , Salmonelose Animal/prevenção & controle , Doenças dos Suínos/prevenção & controle , Salmonella , Matadouros , Fazendas , Contaminação de Alimentos
13.
Animal ; 16(11): 100657, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36252560

RESUMO

To predict the impact of climate change on our beef animals and systems, we need a better understanding of how beef cattle traits are affected by varying weather and frequency of extreme events. We analysed the effect of minimum and maximum temperatures and average daily precipitation on a range of important carcass traits, including age at slaughter, cold carcass weight, carcass growth rate and conformation and fat score (N = >1.6 million), as well as calf 200-day live weight and growth rate (N = >270 000), using data from abattoirs across Britain (carcass traits) and calves in Scottish suckler beef herds (live weights and growth). Animals which experienced higher daily maximum and minimum temperatures had slower carcass and calf growth rates. Increased precipitation also led to poorer cold carcass weights, conformation scores, calf 200-day weights and calf growth. We also analysed the effect of frequency of extreme weather events, including heatwaves, cold waves, and dry and wet days. The frequency of heatwaves, dry and wet days were shown to have significant negative effects on almost all traits considered, for example, predicting that an increase in the frequency of heatwaves by 1 day per 100 days of life would reduce cold carcass weights by about 200 g and increase age at slaughter by about 3 days. Results show that varying weather and frequency of extreme weather, across the lifetime of a beef animal, influences traits which affect the potential profit for a beef farmer. These effects may be due to several factors, including direct effects on the animal, as well as feed availability and management decisions made by the farmer. However, there is potential to mitigate negative effects through a range of animal management strategies.


Assuntos
Matadouros , Tempo (Meteorologia) , Bovinos , Animais , Fenótipo
14.
Trop Anim Health Prod ; 54(5): 316, 2022 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-36149522

RESUMO

A pilot animal disease surveillance program was implemented at four abattoirs in Phnom Penh, Cambodia, between October 2019 and January 2020. A total of 1141 samples were collected from 477 cattle and 664 swine. Serological testing was performed using commercial antibody ELISA kits for zoonotic and high-impact animal diseases, namely brucellosis, Q fever, classical swine fever (CSF), porcine reproductive and respiratory syndrome (PRRS) and African swine fever (ASF). Only two samples tested positive for Brucella antibodies (0.2%, 95% CI 0.4-0.6, n = 1141). The seroprevalence of Q fever was 0.8% (95% CI 0.3-2.1, n = 477) in the cattle samples, while CSF, PRRS and ASF in pigs were 55.4% (95% CI 51.6-59.2, n = 655), 81.2% (95% CI 78.1-84.0, n = 655) and 2.6% (95% CI 1.6-4.1, n = 664), respectively. All 38 doubtful and 17 positive ASF antibody ELISA samples were negative when tested by real-time PCR. Univariate analyses demonstrated that the factor significantly associated with positive results of ASF was the abattoir location (p-value = 0.002). Based on logistic regression models, significant risk factors for CSF were province of origin (p-value = 1.7 × 10-6), abattoir (p-value = 3.6 × 10-11) and PRRS positivity (p-value = 0.004), and for PRRS were province of origin (p-value = 0.0004) and CSF positivity (p-value = 0.001). In conclusion, the seroprevalences of zoonotic diseases in this study were very low. The high prevalence of CSF and PRRS antibodies were most likely the result of vaccination. All ASF seropositive pigs, including those that gave equivocal results, originated from large-scale Cambodian-based commercial farms, as well as Thailand, which raises questions about possible illegal vaccination or low-pathogenicity ASF variants. The pilot abattoir serological surveillance program described here has the potential to provide a sentinel for incursions of novel and endemic pathogens, although further work is required to demonstrate its capacity to provide information on the longitudinal disease trends.


Assuntos
Febre Suína Africana , Doenças dos Bovinos , Peste Suína Clássica , Síndrome Respiratória e Reprodutiva Suína , Febre Q , Doenças dos Suínos , Matadouros , Febre Suína Africana/epidemiologia , Animais , Camboja/epidemiologia , Bovinos , Doenças dos Bovinos/epidemiologia , Peste Suína Clássica/epidemiologia , Projetos Piloto , Febre Q/veterinária , Estudos Soroepidemiológicos , Suínos , Zoonoses/epidemiologia
15.
Chemosphere ; 309(Pt 1): 136535, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36150484

RESUMO

The biogas production (BP), volatile fatty acids (VFAs), microbial communities, and microbes' active enzymes were studied upon the addition of biochar (0-1.5%) at 6% and 8% slaughterhouse waste (SHW) loadings. The 0.5% biochar enhanced BP by 1.5- and 1.6-folds in 6% and 8% SHW-loaded reactors, respectively. Increasing the biochar up to 1.5% caused a reduction in BP at 6% SHW. However, the BP from 8% of SHW was enhanced by 1.4-folds at 1.5% biochar. The VFAs production in all 0.5% biochar amended reactors was highly significant compared to control (p-value < 0.05). The biochar addition increased the bacterial and archaeal diversity at both 6% and 8% SHW loadings. The highest number of OTUs at 0.5% biochar were 567 and 525 in 6% and 8% SHW, respectively. Biochar prompted the Clostridium abundance and increased the lyases and transaminases involved in the degradation of lipids and protein, respectively. Biochar addition improved the Methanosaeta and Methanosphaera abundance in which the major enzymes were reductase and hydrogenase. The archaeal enzymes showed mixed acetoclastic and hydrogenotrophic methanogenesis.


Assuntos
Hidrogenase , Liases , Microbiota , Archaea/metabolismo , Biocombustíveis , Anaerobiose , Reatores Biológicos , Matadouros , Metano/metabolismo , Hidrogenase/metabolismo , Bactérias/metabolismo , Ácidos Graxos Voláteis/metabolismo , Liases/metabolismo , Transaminases , Digestão
16.
J Vet Diagn Invest ; 34(6): 964-967, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36127840

RESUMO

We conducted a cross-sectional serologic study at Kampala City abattoir in Uganda on 287 small ruminants (221 goats and 66 sheep) to determine the seroprevalence of brucellosis. The samples were tested using a modified rose bengal test (mRBT) and an indirect ELISA (iELISA). Small ruminant Brucella spp. seropositivity was 18 of 287 (6.3%) by mRBT and 19 of 287 (6.6%) by iELISA. The prevalence of brucellosis by mRBT was non-significantly higher in goats (17 of 221; 7.7%) than in sheep (1 of 66, 1.5%; p = 0.069), and also non-significantly higher by the iELISA in goats (18 of 221; 8.1%) than in sheep (1 of 66, 1.5%; p = 0.057). Brucellosis in slaughtered goats and sheep is a public health hazard to abattoir workers and consumers that calls for control and eradication measures at the farm level, given that testing is not carried out routinely at slaughter points.


Assuntos
Brucelose , Doenças das Cabras , Doenças dos Ovinos , Ovinos , Animais , Cabras , Matadouros , Estudos Soroepidemiológicos , Doenças das Cabras/epidemiologia , Estudos Transversais , Rosa Bengala , Uganda/epidemiologia , Doenças dos Ovinos/epidemiologia , Brucelose/epidemiologia , Brucelose/veterinária , Ruminantes
17.
J Food Prot ; 85(12): 1696-1707, 2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36135722

RESUMO

ABSTRACT: As part of a program to reduce numbers of the human pathogen Campylobacter on retail chickens, 22 broiler processing lines, representing more than 90% of UK production, were characterized by enumerating Campylobacter on pooled neck skins after exsanguination, scalding, defeathering, evisceration, crop removal, inside-outside washing, and air-chilling stages of processing. Sixteen of the processing lines investigated showed significant (P < 0.05) reductions in Campylobacter numbers because of carcass scalding. However, in all of these lines, the following defeathering stage caused a significant increase in Campylobacter contamination that effectively negated the reductions caused by scalding. On four processing lines, primary chilling also caused a significant reduction in numbers of Campylobacter. On three lines, there was a significant microbiological benefit from inside-outside washing. The stages where Campylobacter numbers were reduced require further investigation to determine the specific mechanisms responsible so that the observed pathogen reductions can be optimized and then more widely implemented. The transfer of up to 4 log CFU Campylobacter per g of neck skin from a colonized flock to a following uncolonized flock was observed. Cross-contamination was substantial and still detectable after 5,000 carcasses from an uncolonized flock had been processed. Numbers of Campylobacter recovered from the uncolonized flocks were highest on the first of the uncolonized birds to pass along the line, and in general, the numbers declined as more uncolonized birds were processed. Air sampling recovered low numbers at the processing stages monitored, indicating that airborne transmission was unlikely to be the primary transfer mechanism operating for cross-contamination between flocks.


Assuntos
Campylobacter , Humanos , Animais , Galinhas/microbiologia , Matadouros , Microbiologia de Alimentos , Contagem de Colônia Microbiana , Reino Unido , Manipulação de Alimentos , Contaminação de Alimentos/análise , Carne/microbiologia
18.
Turkiye Parazitol Derg ; 46(3): 207-212, 2022 09 12.
Artigo em Inglês | MEDLINE | ID: mdl-36094122

RESUMO

Objective: This study was conducted to determine the period prevalence of hydatid cysts isolated from the livers of cattle slaughtered at a slaughterhouse in Konya. Methods: For this purpose, 49,545 cattle were slaughtered and examined for the presence of hydatid cysts in the liver. The study was conducted between June 01, 2018, and May 31, 2019. Results: The highest prevalence of hydatid cysts was observed in autumn 10.83% followed by spring 4.41%, winter 2.90%, and summer 2.66%, with an overall prevalence of 3.93%. Considering the month wise prevalence of hydatid cyst, the highest infection rate was detected in September (7.87%), June (7.16%) and August (7.14%), while the lowest prevalence was observed in February (2.72%) and January (2.83%). In gender-wise investigation, highest prevalence was observed in females (24.65%) during the summer and 18.45% inthe spring. In male animals, the infection rate was very low compared with females. However, the highest prevalence in males was observed throughout the year in autumn (2.36%) and the lowest prevalence in winter (1.68%). The highest prevalence was found among female cattle in heifers in winter (6.52%) and cows in summer (27.52%). Conclusion: The overall economic losses of 56,434 USD were estimated due to discarded hydatid cyst-infected livers during the study period. This study enlightens the prevalence and economic significance of hydatidosis in Konya.


Assuntos
Doenças dos Bovinos , Equinococose Hepática , Equinococose , Echinococcus , Matadouros , Animais , Bovinos , Doenças dos Bovinos/epidemiologia , Equinococose/epidemiologia , Equinococose/veterinária , Feminino , Masculino , Prevalência , Turquia/epidemiologia
19.
PLoS One ; 17(9): e0274636, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36126071

RESUMO

This study aimed to verify the presence of Listeria monocytogenes, Salmonella spp., and Escherichia coli in two Brazilian swine slaughterhouses, as well as to perform antibiograms, detect virulence and antimicrobial resistance genes, and evaluate the in vitro biofilm-forming capability of bacterial isolates from these environments. One Salmonella Typhi isolate and 21 E. coli isolates were detected, while L. monocytogenes was not detected. S. Typhi was isolated from the carcass cooling chamber's floor, resistant to several antimicrobials, including nalidixic acid, cefazolin, chloramphenicol, doxycycline, streptomycin, gentamicin, tetracycline, and sulfonamide, and contained resistance genes, such as tet(B), tet(C), tet(M), and ampC. It also showed moderate biofilm-forming capacity at 37°C after incubating for 72 h. The prevalence of the 21 E. coli isolates was also the highest on the carcass cooling chamber floor (three of the four samplings [75%]). The E. coli isolates were resistant to 12 of the 13 tested antimicrobials, and none showed sensitivity to chloramphenicol, an antimicrobial prohibited in animal feed since 2003 in Brazil. The resistance genes MCR-1, MCR-3, sul1, ampC, clmA, cat1, tet(A), tet(B), and blaSHV, as well as the virulence genes stx-1, hlyA, eae, tir α, tir ß, tir γ, and saa were detected in the E. coli isolates. Moreover, 5 (23.8%) and 15 (71.4%) E. coli isolates presented strong and moderate biofilm-forming capacity, respectively. In general, the biofilm-forming capacity increased after incubating for 72 h at 10°C. The biofilm-forming capacity was the lowest after incubating for 24 h at 37°C. Due to the presence of resistance and virulence genes, multi-antimicrobial resistance, and biofilm-forming capacity, the results of this study suggest a risk to the public health as these pathogens are associated with foodborne diseases, which emphasizes the hazard of resistance gene propagation in the environment.


Assuntos
Infecções por Escherichia coli , Listeria monocytogenes , Matadouros , Animais , Antibacterianos/farmacologia , Biofilmes , Brasil , Cefazolina , Cloranfenicol , Doxiciclina , Farmacorresistência Bacteriana/genética , Escherichia coli , Proteínas de Escherichia coli , Gentamicinas , Listeria monocytogenes/genética , Ácido Nalidíxico , Salmonella , Estreptomicina , Sulfonamidas , Suínos
20.
Vet Rec ; 191(5): 220, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-36083084

Assuntos
Matadouros , Animais , Ovinos
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