Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings
Abstract Background Umbilical outpouchings (UO) are common in Danish weaners. In slaughter pigs UOs consist of various pathological diagnoses; however, no studies have assessed the pathology in weaners from randomly selected herds, nor the agreement between clinical examination findings and post-mor...
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2024-11-01
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| Series: | Porcine Health Management |
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| Online Access: | https://doi.org/10.1186/s40813-024-00401-w |
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| author | Marie-Louise Hansen Inge Larsen Tina Birk Jensen Charlotte Sonne Kristensen Ken Steen Pedersen |
| author_facet | Marie-Louise Hansen Inge Larsen Tina Birk Jensen Charlotte Sonne Kristensen Ken Steen Pedersen |
| author_sort | Marie-Louise Hansen |
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| description | Abstract Background Umbilical outpouchings (UO) are common in Danish weaners. In slaughter pigs UOs consist of various pathological diagnoses; however, no studies have assessed the pathology in weaners from randomly selected herds, nor the agreement between clinical examination findings and post-mortem results. The primary objective was to estimate the prevalence of UO-related clinical findings in weaners before euthanasia and the pathologic macroscopic findings after euthanasia. A secondary objective was to assess the agreement between the size of the UO, the presence of ulcers, and the diagnosis before and after euthanasia. Pigs were selected for euthanasia and included in the study because the individual farmer believed the pigs were already unfit for transport, would not make it to slaughter, or would become unsellable. Results In total 214 weaners euthanized due to UOs were examined both clinically and post-mortem. Clinically 65.4% of the UOs were large (≥ 11 cm) and 52.3% were unreducible. In the autopsy 78.5% of the UOs were large, and 54.2% had ulcers on their UO. The most prevalent pathological diagnoses were hernia (36.4%), hernia combined with cysts/abscesses (30.8%), cysts (11.7%), and abscesses (11.2%). Adhesions were found in 32.7%, haemorrhage in 22.7%, incarcerated intestines in 8.9%, and connective tissue related to the UO in 51.9% of the pigs post-mortem. The agreement between the size of the UO in the clinical examination and post-mortem was good, as was the sensitivity and specificity for detecting ulcers in the clinical examination compared to post-mortem. Conclusion Hernias were the most common pathological diagnosis in weaners euthanized due to UOs, and many pigs had complications related to their UO such as ulcers, adhesions, haemorrhage, or incarcerated intestines—all conditions that could impact the pig’s welfare. The presence of connective tissue in the UO in more than half of the pigs indicated that many of the UOs had been present for an extended period. Clinical identification of the umbilical ring is difficult, but the clinical examination is useful for determining the size of the UO and the presence or absence of an ulcer, both critical factors when assessing a pig’s welfare and fitness for transport. Clinical examination, however, has limited value in determining the aetiology of UOs. |
| format | Article |
| id | doaj-art-a375b8f642234f30980e7041521a08f5 |
| institution | Kabale University |
| issn | 2055-5660 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | BMC |
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| series | Porcine Health Management |
| spelling | doaj-art-a375b8f642234f30980e7041521a08f52024-11-24T12:47:59ZengBMCPorcine Health Management2055-56602024-11-011011810.1186/s40813-024-00401-wClinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchingsMarie-Louise Hansen0Inge Larsen1Tina Birk Jensen2Charlotte Sonne Kristensen3Ken Steen Pedersen4Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of CopenhagenDepartment of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of CopenhagenDanish Pig Research Centre, SEGESDanish Pig Research Centre, SEGESDepartment of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of CopenhagenAbstract Background Umbilical outpouchings (UO) are common in Danish weaners. In slaughter pigs UOs consist of various pathological diagnoses; however, no studies have assessed the pathology in weaners from randomly selected herds, nor the agreement between clinical examination findings and post-mortem results. The primary objective was to estimate the prevalence of UO-related clinical findings in weaners before euthanasia and the pathologic macroscopic findings after euthanasia. A secondary objective was to assess the agreement between the size of the UO, the presence of ulcers, and the diagnosis before and after euthanasia. Pigs were selected for euthanasia and included in the study because the individual farmer believed the pigs were already unfit for transport, would not make it to slaughter, or would become unsellable. Results In total 214 weaners euthanized due to UOs were examined both clinically and post-mortem. Clinically 65.4% of the UOs were large (≥ 11 cm) and 52.3% were unreducible. In the autopsy 78.5% of the UOs were large, and 54.2% had ulcers on their UO. The most prevalent pathological diagnoses were hernia (36.4%), hernia combined with cysts/abscesses (30.8%), cysts (11.7%), and abscesses (11.2%). Adhesions were found in 32.7%, haemorrhage in 22.7%, incarcerated intestines in 8.9%, and connective tissue related to the UO in 51.9% of the pigs post-mortem. The agreement between the size of the UO in the clinical examination and post-mortem was good, as was the sensitivity and specificity for detecting ulcers in the clinical examination compared to post-mortem. Conclusion Hernias were the most common pathological diagnosis in weaners euthanized due to UOs, and many pigs had complications related to their UO such as ulcers, adhesions, haemorrhage, or incarcerated intestines—all conditions that could impact the pig’s welfare. The presence of connective tissue in the UO in more than half of the pigs indicated that many of the UOs had been present for an extended period. Clinical identification of the umbilical ring is difficult, but the clinical examination is useful for determining the size of the UO and the presence or absence of an ulcer, both critical factors when assessing a pig’s welfare and fitness for transport. Clinical examination, however, has limited value in determining the aetiology of UOs.https://doi.org/10.1186/s40813-024-00401-wUmbilical outpouchingPigHerniaWeanerWelfareSustainability |
| spellingShingle | Marie-Louise Hansen Inge Larsen Tina Birk Jensen Charlotte Sonne Kristensen Ken Steen Pedersen Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings Porcine Health Management Umbilical outpouching Pig Hernia Weaner Welfare Sustainability |
| title | Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings |
| title_full | Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings |
| title_fullStr | Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings |
| title_full_unstemmed | Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings |
| title_short | Clinical and pathological characteristics in 214 Danish weaners euthanized because of umbilical outpouchings |
| title_sort | clinical and pathological characteristics in 214 danish weaners euthanized because of umbilical outpouchings |
| topic | Umbilical outpouching Pig Hernia Weaner Welfare Sustainability |
| url | https://doi.org/10.1186/s40813-024-00401-w |
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