The 1997/1998 epizootic of swine fever in the Netherlands: control strategies under a non-vaccination regimen

Terpstra, C.; Smit, A.J. de

doi:10.1016/s0378-1135(00)00252-2

Cited by 69 publications

(51 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Within such a control strategy, the destruction of infected herds and the pre-emptive killing of all animals housed in high-risk herds are key factors (57,73). In order to correctly identify these high risk herds, a good knowledge of all virus transmission routes and their importance, is a prerequisite.…”

Section: Introductionmentioning

confidence: 99%

Transmission of classical swine fever. A review

Ribbens

Dewulf

Koenen

et al. 2004

Veterinary Quarterly

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Transmission of classical swine fever. A review

Ribbens

Dewulf

Koenen

et al. 2004

Veterinary Quarterly

View full text Add to dashboard Cite

“…In comparison, the number of swineherds affected by CSF in Brazil was always smaller than those cited in Europe last years (EDWARDS, 1990). Maybe it occurs due to differences in density swine population, which is higher in European countries (TERPSTRA; SMIT, 2000).…”

Section: Resultsmentioning

confidence: 99%

Peste Suína Clássica no Brasil: estudo para a avaliação dos surtos de peste suína clássica no Brasil de 1978 a 2004

et al. 2007

View full text Add to dashboard Cite

“…This conclusion is likely to hold even though one of the model input parameters, Capacity_adj_factor, was found to have an influential impact on the estimate of TOC in nursery premises. Historical outbreaks further support these estimates by showing that the majority of animals were euthanized due to animal welfare concerns during foreign animal disease outbreaks (Edwards et al, 2000;Terpstra and de Smit, 2000;Allepuz et al, 2007). The current USDA foreign animal disease outbreak management manual (USDA, 2012a and2013) states that movement restrictions are to be imposed within 7 km of the perimeter of an infected zone.…”

Section: Discussionmentioning

confidence: 96%

“…Historically, CSF outbreaks have shown that the number of healthy pigs euthanized due to animal welfare concerns often exceeds the number of pigs euthanized due to infections. For example, during the 1997/98 CSF outbreaks in Germany, Spain and the Netherlands, the pigs euthanized due to adverse animal welfare conditions comprised 62% to 87% of the total pigs euthanized (Edwards et al, 2000;Terpstra and de Smit, 2000). The costs associated with the activities for managing animal welfare concerns were estimated to be >50% of the total direct costs for the outbreak control (Saatkamp et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Hence, an early onset of adverse animal welfare outcomes is expected to have a greater impact on outbreak management than a later onset during an outbreak. Inadequate preparedness to account for adverse animal welfare outcomes could greatly hinder disease outbreak controls as seen in historical foreign animal disease outbreaks (Terpstra and de Smit, 2000;Scudamore and Harris, 2002).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling the time at which overcrowding and feed interruption emerge on the swine premises under movement restrictions during a classical swine fever outbreak

Weng

Yadav

Widmar

et al. 2017

Animal

View full text Add to dashboard Cite

A stochastic risk model was developed to estimate the time elapsed before overcrowding (TOC) or feed interruption (TFI) emerged on the swine premises under movement restrictions during a classical swine fever (CSF) outbreak in Indiana, USA. Nursery (19 to 65 days of age) and grow-to-finish (40 to 165 days of age) pork production operations were modelled separately. Overcrowding was defined as the total weight of pigs on premises exceeding 100% to 115% of the maximum capacity of the premises, which was computed as the total weight of the pigs at harvest/transition age. Algorithms were developed to estimate age-specific weight of the pigs on premises and to compare the daily total weight of the pigs with the threshold weight defining overcrowding to flag the time when the total weight exceeded the threshold (i.e. when overcrowding occurred). To estimate TFI, an algorithm was constructed to model a swine producer's decision to discontinue feed supply by incorporating the assumptions that a longer estimated epidemic duration, a longer time interval between the age of pigs at the onset of the outbreak and the harvest/transition age, or a longer progression of an ongoing outbreak would increase the probability of a producer's decision to discontinue the feed supply. Adverse animal welfare conditions were modelled to emerge shortly after an interruption of feed supply. Simulations were run with 100 000 iterations each for a 365-day period. Overcrowding occurred in all simulated iterations, and feed interruption occurred in 30% of the iterations. The median (5th and 95th percentiles) TOC was 24 days (10, 43) in nursery operations and 78 days (26, 134) in grow-to-finish operations. Most feed interruptions, if they emerged, occurred within 15 days of an outbreak. The median (5th and 95th percentiles) time at which either overcrowding or feed interruption emerged was 19 days (4, 42) in nursery and 57 days (4, 130) in grow-to-finish operations. The study findings suggest that overcrowding and feed interruption could emerge early during a CSF outbreak among swine premises under movement restrictions. The outputs derived from the risk model could be used to estimate and evaluate associated mitigation strategies for alleviating adverse animal welfare conditions resulting from movement restrictions.

show abstract

The 1997/1998 epizootic of swine fever in the Netherlands: control strategies under a non-vaccination regimen

Cited by 69 publications

References 9 publications

Transmission of classical swine fever. A review

Transmission of classical swine fever. A review

Peste Suína Clássica no Brasil: estudo para a avaliação dos surtos de peste suína clássica no Brasil de 1978 a 2004

Modelling the time at which overcrowding and feed interruption emerge on the swine premises under movement restrictions during a classical swine fever outbreak

Contact Info

Product

Resources

About