The Danish pig health scheme: Nation-wide computer-based abattoir surveillance and follow-up at the herd level

Willeberg, Preben; Gerbola, M.-A.; Petersen, Bryan; Andersen, J. B.

doi:10.1016/0167-5877(84)90026-6

Cited by 54 publications

(30 citation statements)

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“…There is evidence supporting the sensitivity of meat inspection for detecting specific diseases in animals [13,14], and condemnation rate information from abattoirs has been used to guide control strategies for common infectious diseases in pigs [15]. Provincially-inspected abattoirs in Ontario have the potential to provide information into a syndromic surveillance system for improved detection of disease outbreaks in Ontario finisher herds.…”

Section: Introductionmentioning

confidence: 99%

Exploring relationships between whole carcass condemnation abattoir data, non-disease factors and disease outbreaks in swine herds in Ontario (2001–2007)

et al. 2014

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BackgroundImproving upon traditional animal disease surveillance systems may allow more rapid detection of disease outbreaks in animal populations. In Ontario, between the years 2001 – 2007, widespread outbreaks of several diseases caused major impacts to the swine industry. This study was undertaken to investigate whether whole carcass condemnation data of market pigs from provincial abattoirs from 2001 – 2007 could have provided useful information for disease surveillance of Ontario swine. The objective was to examine the suitability of these data for detection of disease outbreaks using multi-level models and spatial scan statistics. We investigated the ability of these data to provide spatially-relevant surveillance information by determining the approximate distance pigs are shipped from farm to provincial abattoirs in the province, and explored potentially biasing non-disease factors within these data.ResultsProvincially-inspected abattoirs in Ontario were found to be located in close proximity to the hog farms of origin. The fall season and increasing abattoir capacity were associated with a decrease in condemnation rates. Condemnation rates varied across agricultural regions by year, and some regions showed yearly trends consistent with the timing of emergence of new disease strains that affected the Ontario swine population. Scan statistics identified stable clusters of condemnations in space that may have represented stable underlying factors influencing condemnations. The temporal scans detected the most likely cluster of high condemnations during the timeframe in which widespread disease events were documented. One space-time cluster took place during the beginning of the historical disease outbreaks and may have provided an early warning signal within a syndromic surveillance system.ConclusionsSpatial disease surveillance methods may be applicable to whole carcass condemnation data collected at provincially-inspected abattoirs in Ontario for disease detection on a local scale. These data could provide useful information within a syndromic disease surveillance system for protecting swine herd health within the province. However, non-disease factors including region, season and abattoir size need to be considered when applying quantitative methods to abattoir data for disease surveillance.

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Section: Introductionmentioning

confidence: 99%

Exploring relationships between whole carcass condemnation abattoir data, non-disease factors and disease outbreaks in swine herds in Ontario (2001–2007)

et al. 2014

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“…National databases such as the Danish National Swine Herd Health Programme (Willeberg and others 1984) or the National Animal Health Monitoring System in the usa (King 1990) have been used for studying pig health (Christensen and others 1994). However, if the data are not derived from farms selected at random their value for disease surveillance at a national level may be limited (Dohoo 1988).…”

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confidence: 99%

Prevalence of clinical signs of disease in Danish finisher pigs

Petersen¹,

Nielsen

Hassing

et al. 2008

Veterinary Record

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Between December 1999 and February 2001, two visits, eight weeks apart, were made to 90 herds of Danish finisher pigs. The prevalence of clinical signs was recorded by three veterinary technicians from the Danish Bacon and Meat Council according to a standardised procedure; they had been trained and their observations were monitored and validated before and during the study. A total of 154,347 finisher pigs were examined and 22,136 clinical signs were recorded. Vices accounted for 43 per cent of the signs. The highest mean prevalence was observed for ear necrosis (4·44 per cent), followed by respiratory signs (2·17 per cent), lameness (1·92 per cent), other skin diseases (1·73 per cent), tail bites (1·26 per cent), umbilical hernia (0·78 per cent), flank bites (0·52 per cent), diarrhoea (0·27 per cent), respiratory distress (0·12 per cent), atrophic rhinitis (0·10 per cent), recumbency (0·09 per cent) and central nervous disease (0·05 per cent). The prevalence of atrophic rhinitis was higher in conventional herds than in specific pathogen-free herds. The prevalence of clinical signs of atrophic rhinitis was higher among finishers weighing 51 to 75 kg than among finishers weighing up to 50 kg, and the prevalence of respiratory signs was higher among finishers weighing 51 to 75 kg then among finishers weighing 76 to 100 kg.

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“…Several infectious agents and environmental factors have been associated with CP (Willeberg et al, 1984;Easterday and Hinshaw, 1992;Nicolet, 1992a,b;Pijoan, 1992;Christensen, 1995).…”

Section: Introductionmentioning

confidence: 99%

Infectious and rearing-system related risk factors for chronic pleuritis in slaughter pigs

Enøe¹,

Mousing²,

Schirmer³

et al. 2002

Preventive Veterinary Medicine

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The Danish pig health scheme: Nation-wide computer-based abattoir surveillance and follow-up at the herd level

Cited by 54 publications

References 0 publications

Exploring relationships between whole carcass condemnation abattoir data, non-disease factors and disease outbreaks in swine herds in Ontario (2001–2007)

Exploring relationships between whole carcass condemnation abattoir data, non-disease factors and disease outbreaks in swine herds in Ontario (2001–2007)

Prevalence of clinical signs of disease in Danish finisher pigs

Infectious and rearing-system related risk factors for chronic pleuritis in slaughter pigs

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