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Pirompud P, Sivapirunthep P, Punyapornwithaya V, Chaosap C. Application of machine learning algorithms to predict dead on arrival of broiler chickens raised without antibiotic program. Poult Sci 2024; 103:103504. [PMID: 38335671 PMCID: PMC10864801 DOI: 10.1016/j.psj.2024.103504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Understanding the factors of dead-on-arrival (DOA) incidents during pre-slaughter handling is crucial for informed decision-making, improving broiler welfare, and optimizing farm profitability. In this study, 3 different machine learning (ML) algorithms - least absolute shrinkage and selection operator (LASSO), classification tree (CT), and random forest (RF) - were used together with 4 sampling techniques to optimize imbalanced data. The dataset comes from 22,115 broiler truckloads from a large producer in Thailand (2021-2022) and includes 14 independent variables covering the rearing, catching, and transportation stages. The study focuses on DOA% in the range of 0.10 to 1.20%, with a threshold for high DOA% above 0.3%, and records DOA% per truckload during pre-slaughter ante-mortem inspection. With a high DOA rate of 25.2%, the imbalanced dataset prompts the implementation of 4 methods to tune the imbalance parameters: random over sampling (ROS), random under sampling (RUS), both sampling (BOTH), and synthetic sampling or random over sampling example (ROSE). The aim is to improve the performance of the prediction model in classifying and predicting high DOA%. The comparative analysis of the different error metrics shows that RF outperforms the other models in a balanced dataset. In particular, RUS shows a significant improvement in prediction performance across all models compared to the original unbalanced dataset. The identification of the 4 most important variables for predicting high DOA percentages - mortality and culling rate, rearing stocking density, season, and mean body weight - emphasizes their importance for broiler production. This study provides valuable insights into the prediction of DOA status using an ML approach and contributes to the development of more effective strategies to mitigate high DOA percentages in commercial broiler production.
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Affiliation(s)
- Pranee Pirompud
- Doctoral Program in Innovative Tropical Agriculture, Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Panneepa Sivapirunthep
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Veerasak Punyapornwithaya
- Research Center for Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Chanporn Chaosap
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
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Delpont M, Salazar LG, Dewulf J, Zbikowski A, Szeleszczuk P, Dufay-Lefort AC, Rousset N, Spaans A, Amalraj A, Tilli G, Piccirillo A, Devesa A, Sevilla-Navarro S, van Meirhaege H, Kovács L, Jóźwiak ÁB, Guérin JL, Paul MC. Monitoring biosecurity in poultry production: an overview of databases reporting biosecurity compliance from seven European countries. Front Vet Sci 2023; 10:1231377. [PMID: 37649565 PMCID: PMC10465163 DOI: 10.3389/fvets.2023.1231377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023] Open
Abstract
Compliance with required on-farm biosecurity practices reduces the risk of contamination and spread of zoonotic and economically important diseases. With repeating avian influenza epidemics in the poultry industry, the need to monitor and improve the overall level of biosecurity is increasing. In practice, biosecurity compliance is assessed by various actors (e.g., academic, private and public institutions), and the results of such assessments may be recorded and gathered in databases which are seldom shared or thoroughly analyzed. This study aimed to provide an inventory of databases related to the assessment of biosecurity in poultry farms in seven major poultry-producing European countries to highlight challenges and opportunities associated with biosecurity data collection, sharing, and use. The institutions in charge of these databases were contacted and interviewed using a structured questionnaire to gather information on the main characteristics of the databases and the context of their implementation. A total of 20 databases were identified, covering the gamut of poultry species and production types. Most databases were linked to veterinary health authorities or academia, and to a lesser extent interbranch organizations. Depending on the institutions in charge, the databases serve various purposes, from providing advice to enforcing regulations. The quality of the biosecurity data collected is believed to be quite reliable, as biosecurity is mostly assessed by trained farm advisors or official veterinarians and during a farm visit. Some of the databases are difficult to analyze and/or do not offer information concerning which biosecurity measures are most or least respected. Moreover, some key biosecurity practices are sometimes absent from certain databases. Although the databases serve a variety of purposes and cover different production types, each with specific biosecurity features, their analysis should help to improve the surveillance of biosecurity in the poultry sector and provide evidence on the benefits of biosecurity.
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Affiliation(s)
| | | | - Jeroen Dewulf
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Artur Zbikowski
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Piotr Szeleszczuk
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | | | - Nathalie Rousset
- ITAVI, Institut Technique de l'Aviculture, Pisciculture et Cuniculture, Paris, France
| | - Annick Spaans
- Southern Agriculture and Horticulture Organization, Hertogenbosch, Netherlands
| | - Arthi Amalraj
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Giuditta Tilli
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, Italy
| | - Alessandra Piccirillo
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, Italy
| | - Aitor Devesa
- Centro de Calidad Avícola y Alimentación Animal de la Comunidad Valenciana (CECAV), Castellón, Spain
| | - Sandra Sevilla-Navarro
- Centro de Calidad Avícola y Alimentación Animal de la Comunidad Valenciana (CECAV), Castellón, Spain
| | | | - László Kovács
- Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine, Budapest, Hungary
| | - Ákos Bernard Jóźwiak
- Digital Food Chain Education, Research, Development and Innovation Institute, University of Veterinary Medicine, Budapest, Hungary
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Pirompud P, Sivapirunthep P, Punyapornwithaya V, Chaosap C. Preslaughter handling factors affecting dead on arrival, condemnations, and bruising in broiler chickens raised without an antibiotic program. Poult Sci 2023; 102:102828. [PMID: 37354619 PMCID: PMC10404772 DOI: 10.1016/j.psj.2023.102828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/26/2023] Open
Abstract
In Thailand, knowledge about the factors affecting broiler losses during the preslaughter process is very limited, especially for broilers raised without an antibiotic program. The objective of this study was to determine the preslaughter factors that influence the incidence of dead on arrival (DOA), condemnations, and bruising in broilers raised without antibiotics. Data from 13,581 truckloads of broilers raised without an antibiotic program in 95 contract farms of one of Thailand's largest broiler producers in 2021 were analyzed using a generalized linear mixed model that accounted for farm as a random effect. Results showed that the following risk factors were associated with the occurrence of DOA, condemnations, and bruising: season, time of transport, sex, age at slaughter, mortality and culling rate, and weight per crate. While mean body weight affected the incidence of condemnations and bruising, transport time and lairage time affected DOA and bruising. Feed withdrawal time affected DOA and condemnations. Rearing stocking density only affected condemnation rate. Reducing or eliminating the effects of these risk factors could reduce production losses due to DOA, condemnations, and bruising, thereby improving animal welfare and producer profitability. Reducing weight per crate could reduce DOA, condemnations, and bruising. Reducing lairage time could reduce DOA and bruising, while reducing feed withdrawal time could reduce DOA and condemnations. Raising broilers at a younger age with a lower slaughter weight could prevent the occurrence of DOA, condemnations, and bruising.
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Affiliation(s)
- Pranee Pirompud
- Doctoral Program in Innovative Tropical Agricultures, Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Panneepa Sivapirunthep
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Veerasak Punyapornwithaya
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Chanporn Chaosap
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
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The Incidence of Liver Damage Found during Postmortem Examination at the Slaughterhouse. Animals (Basel) 2023; 13:ani13050839. [PMID: 36899698 PMCID: PMC10000166 DOI: 10.3390/ani13050839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
We monitored liver damage in cattle (cows, heifers, fattening bulls, and calves culled from the herd), pigs (sows, finishing pigs, and piglets culled from the farm), sheep (ewes and lambs), goats (does and kids), rabbits, and poultry (end-of-lay hens, broiler chickens, turkeys, domestic ducks, and domestic geese) in the period from 2010 to 2021. All animals (n = 1,425,710,143) reared on Czech farms and slaughtered at slaughterhouses in the Czech Republic were included in the analysis. We determined the total number of damaged livers for individual categories of animals and also analyzed separately the incidence of damage of acute, chronic, parasitic, and other origin. The overall incidence of liver damage was higher in adult animals compared to fattening animals in all species. In cattle and pigs, the incidence was also higher in young animals culled from the herd compared to fattening animals. When comparing adult animals by species, the incidence of liver damage was highest in cows (46.38%), followed by sows (17.51%), ewes (12.97%), and does (4.26%). When comparing fattening animals by species, the incidence was highest in heifers (14.17%) and fattening bulls (7.97 %), followed by finishing pigs (11.26%), lambs (4.73%), and kids (0.59%). When comparing young culled from the herd by species, it was higher in piglets (32.39%) than in calves (17.6 %), and when poultry and rabbits were compared, the incidence was highest in turkeys (3.38%), followed by ducks (2.20%), geese (1.09%), broiler chickens (0.08%), and rabbits (0.04%). The results indicate that fattening animals have a better liver condition than mature animals and that culled young have a worse liver condition than older fattening animals. Chronic lesions represented the dominant proportion of pathological findings. Parasitic lesions occurred, first and foremost, in animals grazed on meadows with likely parasitic invasion, i.e., in ewes (7.51%), lambs (3.51%), and heifers (1.31%), and in animals in which antiparasitic protection is limited in view of the protection of meat from antiparasitic residues, i.e., finishing pigs (3.68%). Parasitic damage to the liver was rarely detected in rabbits and poultry. The results obtained represent a body of knowledge for measures to improve the health and condition of the liver in food animals.
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Hortêncio MC, Costa LRM, de Souza MVP, de Freitas WD, Fonseca BB, Silva MJB, Cossi MVC. Time series evaluation of condemnation at poultry slaughterhouses enable to export in Southeastern Brazil (2009-2019): a tool for optimizing resources in the poultry production chain. BMC Vet Res 2022; 18:427. [PMID: 36482399 PMCID: PMC9730635 DOI: 10.1186/s12917-022-03521-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Even with the technological advances in management, health and genetics applied to poultry farming worldwide, there is still a high rate of carcasses condemnation at slaughterhouses, which result in losses for the poultry production chain. Thus, this work aimed to evaluate the condemnation occurrence index (COI) and adjusted seasonal index (ASI) of poultry (turkey, griller, and heavy chicken) between 2009 and 2019, in a slaughterhouse enable to export in southeastern Brazil. Data were obtained from official spreadsheets from the Brazilian Federal Inspection Service (FIS) and used to calculate the COI, correlation analysis between the main causes of condemnation, and ASI assessments throughout the year. RESULTS Seven percent (55,594,318) of the poultry carcasses were condemned (partial or total), and the most frequent causes, contamination, and contusion/traumatic injury, amounted to 63.5% of the total condemnation. There was a trend of increasing condemnation throughout the time series evaluated, with COI varying between 45,282-149,809 condemnations per 1,000,000 poultry slaughtered. Considering the ASI, it was identified that for ascitic syndrome, July has a higher index value (1.63) than the months between January-June (P < 0.05). CONCLUSIONS The main causes of condemnation were contamination and contusion/traumatic injury, both technological causes. ASI showed that in July there is a greater carcasses condemnation due to ascitic syndrome than in the months between January and June. The variations observed in the ASIs can provide subsidies for preventive measures and optimization of human and financial resources, generating positive impacts on food safety, productivity, and profitability of the sector.
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Affiliation(s)
- Maria Carolina Hortêncio
- Federal Inspection Service, Ministry of Agriculture, Livestock and Supply (MAPA), Uberlândia, Minas Gerais Brazil
| | - Letícia Roberta Martins Costa
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
| | - Maria Victória Pereira de Souza
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
| | - Weslley Domenicci de Freitas
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
| | - Belchiolina Beatriz Fonseca
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
| | - Marcelo José Barbosa Silva
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
| | - Marcus Vinícius Coutinho Cossi
- grid.411284.a0000 0004 4647 6936Federal University of Uberlândia (UFU), Campus Umuarama, Uberlândia, Minas Gerais 38405-240 Brazil
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Törmä K, Kaukonen E, Lundén J, Fredriksson-Ahomaa M, Laukkanen-Ninios R. A comparative analysis of meat inspection data as an information source of the health and welfare of broiler chickens based on Finnish data. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Schulze Bernd K, Wilms-Schulze Kump A, Freise F, Reich F, Kehrenberg C. Influences of biosecurity on the occurrence of cellulitis in broiler flocks. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2021.100230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Health status of slaughtered animals as indicated by postmortem inspection at slaughterhouses. ACTA VET BRNO 2022. [DOI: 10.2754/avb202291010099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The study focused on the comparison of health of cattle, pigs, sheep, goats, rabbits, poultry and ostriches slaughtered in slaughterhouses in the Czech Republic based on the occurrence of findings detected during a postmortem veterinary inspection in the period from 2010 to 2019. The level of health was expressed as the so-called PA index obtained by the ratio of the number of findings to the total number of observations (15) during the pathoanatomical examination in the slaughterhouse multiplied by one hundred. Mammals (cattle, pigs, sheep and goats) generally had a higher PA index than birds (domestic chickens, turkeys, ducks, geese, ostriches), with the exception of kids and rabbits. The highest PA index was found in cows (15.13) and piglets (12.18); whereas the lowest PA index was found in broiler chickens (0.102), rabbits, and geese (both 0.14). In poultry, the PA index values were below 1, with the exception of laying hens (PA index 2.165). A higher PA index was found in a group of adult animals (the PA index ranged from 2.17 to 15.13) and groups of young animals culled from farms (the PA index ranged from 10.79 to 12.18) than in fattened animals (the PA index ranged from 0.10 to 5.32). A comprehensive overview of the health condition of slaughtered animals enables the farmers, veterinarians, transporters and slaughterhouse operators to take appropriate and precisely targeted preventive measures, thereby increasing the animal welfare and health in the future while reducing the incidence of carcass damage.
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Buzdugan SN, Alarcon P, Huntington B, Rushton J, Blake DP, Guitian J. Enhancing the value of meat inspection records for broiler health and welfare surveillance: longitudinal detection of relational patterns. BMC Vet Res 2021; 17:278. [PMID: 34407823 PMCID: PMC8371771 DOI: 10.1186/s12917-021-02970-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/20/2021] [Indexed: 11/10/2022] Open
Abstract
Background Abattoir data are under-used for surveillance. Nationwide surveillance could benefit from using data on meat inspection findings, but several limitations need to be overcome. At the producer level, interpretation of meat inspection findings is a notable opportunity for surveillance with relevance to animal health and welfare. In this study, we propose that discovery and monitoring of relational patterns between condemnation conditions co-present in broiler batches at meat inspection can provide valuable information for surveillance of farmed animal health and welfare. Results Great Britain (GB)-based integrator meat inspection records for 14,045 broiler batches slaughtered in nine, four monthly intervals were assessed for the presence of surveillance indicators relevant to broiler health and welfare. K-means and correlation-based hierarchical clustering, and association rules analyses were performed to identify relational patterns in the data. Incidence of condemnation showed seasonal and temporal variation, which was detected by association rules analysis. Syndrome-related and non-specific relational patterns were detected in some months of meat inspection records. A potentially syndromic cluster was identified in May 2016 consisting of infection-related conditions: pericarditis, perihepatitis, peritonitis, and abnormal colour. Non-specific trends were identified in some months as an unusual combination of condemnation reasons in broiler batches. Conclusions We conclude that the detection of relational patterns in meat inspection records could provide producer-level surveillance indicators with relevance to broiler chicken health and welfare.
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Affiliation(s)
- S N Buzdugan
- Veterinary Epidemiology, Economics and Public Health Group, Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hertfordshire, AL9 7TA, North Mymms, UK.
| | - P Alarcon
- Veterinary Epidemiology, Economics and Public Health Group, Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hertfordshire, AL9 7TA, North Mymms, UK
| | - B Huntington
- Liverpool Science Park, Innovation Centre 2, 146 Brownlow Hill, L3 5RF, Liverpool, UK
| | - J Rushton
- Epidemiology and Population Health, Liverpool University, Brownlow Hill, L69 7ZX, Liverpool, UK
| | - D P Blake
- Pathobiology and Population Sciences, Royal Veterinary College, North Mymms, UK
| | - J Guitian
- Veterinary Epidemiology, Economics and Public Health Group, Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, Hertfordshire, AL9 7TA, North Mymms, UK
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Mullan S, Stuijfzand B, Butterworth A. Longitudinal national-level monitoring of on-farm broiler welfare identifies consistently poorly performing farms. Sci Rep 2021; 11:11928. [PMID: 34099782 PMCID: PMC8185078 DOI: 10.1038/s41598-021-91347-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 05/19/2021] [Indexed: 11/27/2022] Open
Abstract
A range of welfare outcome measures relating to on-farm welfare are monitored in UK slaughterhouses to check compliance with the European Broiler Directive. A national dataset from 438,155 batches of chickens between 2010 and 2014 and from 228,795 batches between 2016 and 2018 was analysed. The data contained information about 3.1 billion chickens. The highest mean proportion for a single condition was for ascites/oedema in 2016–2018 at 0.384%, affecting 3.9 million chickens/year sent to slaughter during that time, followed by abnormal colour/fevered at 0.324%, affecting 3.4 million chickens/year. Identifying farms most likely to have poor welfare is an important strategy for improving animal welfare overall, and for maximising the capacity for checking regulatory compliance when resources are limited. We found a greater proportion of broiler farms overall remained consistently in the best quartile (16.4%) rather than the worst quartile (6.6%). Farms that exceeded a Government ‘trigger’ threshold for poor welfare were significantly more likely to subsequently improve than ‘non-trigger’ farms, although they usually remained in the worst performing quartile of farms.
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Affiliation(s)
- Siobhan Mullan
- Bristol Veterinary School, University of Bristol, Langford, Avon, Bristol, BS40 5DU, UK.
| | - Bobby Stuijfzand
- Bristol Veterinary School, University of Bristol, Langford, Avon, Bristol, BS40 5DU, UK
| | - Andrew Butterworth
- Bristol Veterinary School, University of Bristol, Langford, Avon, Bristol, BS40 5DU, UK
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Dórea FC, Vergne T, Brennan M, van Schaik G, Barrett D, Carmo LP, Robinson PA, Brodbelt DC, McIntyre KM. SVEPM 2020 - Resilience and community support in the first year of the COVID-19 pandemic: The Society for Veterinary Epidemiology and Preventive Medicine Annual Conference, extraordinarily held online. Prev Vet Med 2021; 191:105368. [PMID: 33933917 PMCID: PMC8080506 DOI: 10.1016/j.prevetmed.2021.105368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/25/2021] [Indexed: 11/18/2022]
Affiliation(s)
- Fernanda C Dórea
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Department of Disease Control and Epidemiology, National Veterinary Institute, Uppsala, SE 75 189, Sweden.
| | - Timothée Vergne
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; UMR ENVT-INRAE 1225, National Veterinary School of Toulouse, Toulouse, France
| | - Marnie Brennan
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; School of Veterinary Medicine and Science, University of Nottingham, Loughborough, UK
| | - Gerdien van Schaik
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Royal GD, Deventer, The Netherlands; Department of Population Health Sciences, Unit Farm Animal Health, Utrecht University, Utrecht, The Netherlands
| | - Damien Barrett
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; One Health Scientific Support Team, Dept of Agriculture, Food and the Marine, Dublin, Ireland
| | - Luís Pedro Carmo
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Veterinary Public Health Institute, Vetsuisse Faculty, University of Bern, Switzerland
| | - Philip A Robinson
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Department of Veterinary Health and Animal Sciences, Harper Adams University, Newport, Shropshire, United Kingdom
| | - Dave C Brodbelt
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Veterinary Epidemiology, Economics and Public Health Group, Royal Veterinary College, London, UK
| | - K Marie McIntyre
- The Society for Veterinary Epidemiology and Preventive Medicine, UK; Department of Livestock and One Health, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, UK
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