Assessment of producer conducted antemortem inspection of market pigs in Australia

Jackowiak, J; Kiermeier, Andreas; Kolega, V; Missen, G; Reiser, David; Pointon, Andrew

doi:10.1111/j.1751-0813.2006.tb12798.x

Cited by 15 publications

(4 citation statements)

References 13 publications

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“…Even though it would be too onerous to collect such data in this way under practical conditions, Precision Livestock Farming tools could be employed [ 30 ]. Furthermore, although it is possible to collect information on animal-based welfare outcomes at slaughter during MI, several studies expressed concerns regarding its feasibility both due to time constraints and overcrowding [ 26 , 31 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

Adding value to food chain information: using data on pig welfare and antimicrobial use on-farm to predict meat inspection outcomes

et al. 2021

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Background Using Food Chain Information data to objectively identify high-risk animals entering abattoirs can represent an important step forward towards improving on-farm animal welfare. We aimed to develop and evaluate the performance of classification models, using Gradient Boosting Machine algorithms that utilise accurate longitudinal on-farm data on pig health and welfare to predict condemnations, pluck lesions and low cold carcass weight at slaughter. Results The accuracy of the models was assessed using the area under the receiver operating characteristics (ROC) curve (AUC). The AUC for the prediction models for pneumonia, dorsocaudal pleurisy, cranial pleurisy, pericarditis, partial and total condemnations, and low cold carcass weight varied from 0.54 for pneumonia and 0.67 for low cold carcass weight. For dorsocaudal pleurisy, ear lesions assessed on pigs aged 12 weeks and antimicrobial treatments (AMT) were the most important prediction variables. Similarly, the most important variable for the prediction of cranial pleurisy was the number of AMT. In the case of pericarditis, ear lesions assessed both at week 12 and 14 were the most important variables and accounted for 33% of the Bernoulli loss reduction. For predicting partial and total condemnations, the presence of hernias on week 18 and lameness on week 12 accounted for 27% and 14% of the Bernoulli loss reduction, respectively. Finally, AMT (37%) and ear lesions assessed on week 12 (15%) were the most important variables for predicting pigs with low cold carcass weight. Conclusions The findings from our study show that on farm assessments of animal-based welfare outcomes and information on antimicrobial treatments have a modest predictive power in relation to the different meat inspection outcomes assessed. New research following the same group of pigs longitudinally from a larger number of farms supplying different slaughterhouses is required to confirm that on farm assessments can add value to Food Chain Information reports.

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Section: Discussionmentioning

confidence: 99%

Adding value to food chain information: using data on pig welfare and antimicrobial use on-farm to predict meat inspection outcomes

et al. 2021

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“…The sensitivity of detection was almost invariably greater when inspection was conducted as animals are moved past an inspector ('in-movement' inspection) versus inspection whilst animals are stationary ('pen-side' inspection), with detection probability of infectious and suspect cases during 'pen-side' inspection being as low as 30 %. Jackowiak et al (2006) also highlight concerns about detection probability during routine ante-mortem inspection, based on results following a comparison of on-farm versus abattoir ante-mortem inspection (see below). In a study to assess pen-level prevalence of clinical signs in finishing pigs, Petersen et al (2004) found that agreement between trained observers was variable, being higher for tail biting and umbilical hernias, but only fair to moderate when identifying pens holding one or more lame pigs.…”

Section: 323mentioning

confidence: 99%

“…There is an increased probability that the animals will show post-mortem abnormalities, if abnormalities were previously identified on-farm. In a later Australian study, Jackowiak et al (2006) evaluated the efficacy of on-farm ante-mortem inspection (detection of high-risk animals, impact on food safety and potential for improvement of animal welfare). The results supported the earlier work by Harbers et al (1992c), indicating that onfarm inspection may be more effective than abattoir-based ante-mortem inspection in identifying some categories of suspect pigs, particularly those with pre-existing locomotor problems that were susceptible to transport injury.…”

Section: 323mentioning

confidence: 99%

Scientific Opinion on the public health hazards to be covered by inspection of meat (swine)

Andréoletti¹,

Budka²,

Bunčić³

et al. 2011

EFSA Journal

160

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A qualitative risk assessment identified Salmonella spp., Yersinia enterocolitica, Toxoplasma gondii and Trichinella spp. as the most relevant biological hazards in the context of meat inspection of swine. A comprehensive pork carcass safety assurance is the only way to ensure their effective control. This requires setting targets to be achieved in/on chilled carcasses, which also informs what has to be achieved earlier in the food chain. Improved Food Chain Information (FCI) enables risk‐differentiation of pig batches (hazard‐related) and abattoirs (process hygiene‐related). Risk reduction measures at abattoir level are focused on prevention of microbial contamination through technology‐ and process hygiene‐based measures (GMP/GHP‐ and HACCP‐based), including omitting palpation/incision during post‐mortem inspection in routine slaughter, as well as hazard reduction/inactivation meat treatments if necessary. At farm level, risk reduction measures are based on herd health programmes, closed breeding pyramids and GHP/GFP. Chemical substances listed in Council Directive 96/23/EC were ranked into four categories. Dioxins, dioxin‐like polychlorinated biphenyls and chloramphenicol were ranked as being of high potential concern. However, chemical substances in pork are unlikely to pose an immediate or short term health risk for consumers. Opportunities for risk‐based inspection strategies by means of differentiated sampling plans taking into account FCI were identified. Regular update of sampling programmes and inclusion of inspection criteria for the identification of illicit use of substances were also recommended. Meat inspection is a key component of the overall surveillance system for pig health and welfare but information is currently under‐utilised. The changes proposed to the pig meat inspection system will lead to some reduction in the detection probability of diseases and welfare conditions. The difference is likely to be minimal for diseases/conditions that affect several organs. To mitigate the reduced detection probability, palpation and/or incision should be conducted as a follow‐up to visual inspection whenever abnormalities are seen.

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“…Gade et al (2007) emphasised that total pre-slaughter mortality was reduced eight-fold in Danish slaughter pigs during the period of halothane gene removal from the pig population. Jackowiak et al (2006) evaluated the effectiveness of on-farm antemortem inspection in Australian pig farms. From their field study it was concluded that producer inspections may have benefits for animal welfare and chain efficiency.…”

Section: Fitness For Transportmentioning

confidence: 99%

Scientific Opinion Concerning the Welfare of Animals during Transport

2011

EFSA Journal

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The Scientific Opinion on the welfare of animals during transport reviewed the most recent scientific information concerning the main farm species. New scientific evidence and consequent conclusions and recommendations were arranged following the structure of Annex I of EC Regulation 1/2005 5 . On fitness for transport, recommendations for cattle and poultry were focused on repeated humane handling and careful inspection prior to transport. On the means of transport, use of partitions in horse transport, compulsory fasting of pigs with provision of water at stops, and temperature limits for poultry were major recommendations. Maintaining stability of animal groups was recommended as good practice, with special emphasis on the need to avoid mixing unfamiliar pigs or goats. On watering and feeding intervals, journey times and resting periods, journey duration should not exceed 12 hours for horses and 29 hours for cattle. Horses should be supplied with water one hour before and one hour after transport, and for cattle there should be a 24 hour recovery period with access to food and water. For rabbits, time spent inside the containers during lairage should be considered journey time. Space allowance for horses should be given in terms of kg/m 2 instead of m 2 /animal. For cattle and sheep, it is recommended that space allowances should be calculated according to an allometric equation relating size to body weight. Limits for stocking densities of broilers in containers should be related to thermal conditions. On the navigation systems, temperature monitoring systems should be incorporated. Minimum standards should be established regarding data type to be recorded, the 4 The changes do not affect the overall conclusions of the opinion. To avoid confusion, the original version of the opinion has been removed from the website, but is available on request, as is a version showing all the changes made.

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Assessment of producer conducted antemortem inspection of market pigs in Australia

Abstract: With training, producer sensitivity in antemortem inspection may be high and more proficient than abattoir antemortem inspection. Use of producer inspections may have benefits for animal welfare and chain efficiency, but not food safety.

Cited by 15 publications

References 13 publications

Adding value to food chain information: using data on pig welfare and antimicrobial use on-farm to predict meat inspection outcomes

Adding value to food chain information: using data on pig welfare and antimicrobial use on-farm to predict meat inspection outcomes

Scientific Opinion on the public health hazards to be covered by inspection of meat (swine)

Scientific Opinion Concerning the Welfare of Animals during Transport

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