Sow mortality is associated with meat inspection findings

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Heinonen , M , Bergman , P , Fredriksson-Ahomaa , M , Virtala , A-M , Munsterhjelm , C , Valros , A , Oliviero , C , Peltoniemi , O & Hälli , O 2018 , ' Sow mortality is associated with meat inspection findings ' , Livestock Science , vol. 208 , pp. 90-95 .

Title: Sow mortality is associated with meat inspection findings
Author: Heinonen, Mari; Bergman, Paula; Fredriksson-Ahomaa, Maria; Virtala, Anna-Maija; Munsterhjelm, Camilla; Valros, Anna; Oliviero, Claudio; Peltoniemi, Olli; Hälli, Outi
Contributor organization: Mari Heinonen / Principal Investigator
Production Animal Medicine
Departments of Faculty of Veterinary Medicine
Research Centre for Animal Welfare
Faculty of Veterinary Medicine
Maria Fredriksson-Ahomaa / Principal Investigator
Food Hygiene and Environmental Health
Anna-Maija Kristiina Virtala / Principal Investigator
Veterinary Microbiology and Epidemiology
Veterinary Biosciences
DAPHNE - Developing Assessment Practices in Higher Education
Laura Hänninen / Principal Investigator
Animal Reproduction Science
Teachers' Academy
Date: 2018-02
Language: eng
Number of pages: 6
Belongs to series: Livestock Science
ISSN: 1871-1413
Abstract: Sow meat inspection (MI) and mortality data are important sources of information for use in herd health work. This observational study examined whether MI results of sows associate with sow mortality in Finnish sow herds. We also described some MI findings of sows to create basic references in order to encourage their use in herd health work. The project was widely advertised to farmers of sow herds and practicing veterinarians. Ten herds joined the project voluntarily and 36 other herds after they were contacted by the researchers. MI data (carcass weight, lean meat percentage, arthritis, abscesses, liver condemnations, milk spots, organ condemnations, pleuritis, pneumonia, shoulder ulcers, tail biting, whole carcass condemnations, partial carcass condemnations and kg of meat condemned) were made available by the three largest slaughterhouses in Finland, and sow mortality data were obtained from the National Swine Herd Register for 39 of the study herds for the year 2014. The mean herd size of participating herds was 529 females with a standard deviation of 479 and mean annual mortality 9.0% +/- 5.2%. As much as 22.8% of the 7437 slaughtered sows had at least one MI finding. Heavy carcasses were less likely to have at least one MI finding. A median (range) of 1.8% (0-7.2) and 11.8% (0-34.6) of the sows were recorded to have a whole and partial carcass condemnation, respectively. The most common MI findings were abscesses (5.7%, 0-16.3), shoulder ulcers (3.6%, 0-22.9) and arthritis (2.1%, 0-13.3). In individual carcasses, abscesses were associated with arthritis, shoulder ulcers and pneumonia, which was indicative that these animals most likely had a systemic infection. Pneumonia findings were associated with pleuritis. At the herd level, the increase of sow mortality by 1% was associated with an increased percentage of slaughtered females with at least one MI finding 0.8% (P = 0.01). If sow mortality increased by 1%, the odds ratio for the herd having more than a median percentage of pleuritis was 1.3 (95% confidence interval; 1.01 - 1.57, P = 0.04) compared to the situation of the herd having less than a median percentage of pleuritis. Also, if sow mortality increased by 1%, the percentage of partial carcass condemnations of females increased by 0.4% (P = 0.08). These results suggest that high mortality was associated with an increase of some MI findings. MI results of sows should be used in herd health follow-up of sow health.
Subject: Sow
Meat inspection
412 Animal science, dairy science
413 Veterinary science
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: acceptedVersion

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