Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters
Swine respiratory disease is associated with productive losses. We evaluated the prevalence of lung lesions with an emphasis on <i>Mycoplasma hyopneumoniae</i> (Mh), porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV), as well as the impact on...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/12/3604 |
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| author | Yania Paz-Sánchez Pedro Herráez Óscar Quesada-Canales Carlos G. Poveda Josué Díaz-Delgado María del Pino Quintana-Montesdeoca Elena Plamenova Stefanova Marisa Andrada |
| author_facet | Yania Paz-Sánchez Pedro Herráez Óscar Quesada-Canales Carlos G. Poveda Josué Díaz-Delgado María del Pino Quintana-Montesdeoca Elena Plamenova Stefanova Marisa Andrada |
| author_sort | Yania Paz-Sánchez |
| collection | DOAJ |
| description | Swine respiratory disease is associated with productive losses. We evaluated the prevalence of lung lesions with an emphasis on <i>Mycoplasma hyopneumoniae</i> (Mh), porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV), as well as the impact on productive parameters in 108 finishing pigs at slaughter. Pathologic, immunohistochemical (IHC) and serologic analyses were performed. Pneumonic processes were observed in 73.1% of the animals. They mainly consisted of cranioventral bronchopneumonia (CBP) (46.3%) and pleuritis (17.6%). Microscopically, bronchointerstitial pneumonia (67.4%) was common and was occasionally combined (27.9%) with interstitial pneumonia (IP). Mh and PCV2-antigens were detected in bronchointerstitial pneumonia (70.7%) and IP cases (33.3%). There were low titers against Mh (18%) and high titers against PRRSV (100%) and PCV2 (65%). Animals with CBP remained at the farm longer; those with >10% of lung parenchyma involvement were sent later (208.8 days old) and had a lower average carcass weight (74.1 kg) and a lower daily weight gain (500.8 gr/day) compared with animals without lesions (567.2 gr/day, 77.7 kg, 200.8 days old). We suggest that animals that do not reach the weight at slaughter should be sent to slaughter regardless to avoid further negative impacts of respiratory disease in productive parameters. |
| first_indexed | 2024-03-10T04:40:08Z |
| format | Article |
| id | doaj.art-fc32eb79c97e43c4a6bb961d592b82a9 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T04:40:08Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-fc32eb79c97e43c4a6bb961d592b82a92023-11-23T03:29:38ZengMDPI AGAnimals2076-26152021-12-011112360410.3390/ani11123604Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity ParametersYania Paz-Sánchez0Pedro Herráez1Óscar Quesada-Canales2Carlos G. Poveda3Josué Díaz-Delgado4María del Pino Quintana-Montesdeoca5Elena Plamenova Stefanova6Marisa Andrada7Veterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainVeterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainVeterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainEpidemiology and Preventive Medicine, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainVeterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainDepartament of Mathematics, University of Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, SpainVeterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainVeterinary Histology and Pathology, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35416 Las Palmas de Gran Canaria, SpainSwine respiratory disease is associated with productive losses. We evaluated the prevalence of lung lesions with an emphasis on <i>Mycoplasma hyopneumoniae</i> (Mh), porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV), as well as the impact on productive parameters in 108 finishing pigs at slaughter. Pathologic, immunohistochemical (IHC) and serologic analyses were performed. Pneumonic processes were observed in 73.1% of the animals. They mainly consisted of cranioventral bronchopneumonia (CBP) (46.3%) and pleuritis (17.6%). Microscopically, bronchointerstitial pneumonia (67.4%) was common and was occasionally combined (27.9%) with interstitial pneumonia (IP). Mh and PCV2-antigens were detected in bronchointerstitial pneumonia (70.7%) and IP cases (33.3%). There were low titers against Mh (18%) and high titers against PRRSV (100%) and PCV2 (65%). Animals with CBP remained at the farm longer; those with >10% of lung parenchyma involvement were sent later (208.8 days old) and had a lower average carcass weight (74.1 kg) and a lower daily weight gain (500.8 gr/day) compared with animals without lesions (567.2 gr/day, 77.7 kg, 200.8 days old). We suggest that animals that do not reach the weight at slaughter should be sent to slaughter regardless to avoid further negative impacts of respiratory disease in productive parameters.https://www.mdpi.com/2076-2615/11/12/3604lung lesions<i>Mycoplasma hyopneumoniae</i>porcine circovirus type 2porcine reproductive and respiratory syndrome virusserologyswine pathology |
| spellingShingle | Yania Paz-Sánchez Pedro Herráez Óscar Quesada-Canales Carlos G. Poveda Josué Díaz-Delgado María del Pino Quintana-Montesdeoca Elena Plamenova Stefanova Marisa Andrada Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters Animals lung lesions <i>Mycoplasma hyopneumoniae</i> porcine circovirus type 2 porcine reproductive and respiratory syndrome virus serology swine pathology |
| title | Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters |
| title_full | Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters |
| title_fullStr | Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters |
| title_full_unstemmed | Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters |
| title_short | Assessment of Lung Disease in Finishing Pigs at Slaughter: Pulmonary Lesions and Implications on Productivity Parameters |
| title_sort | assessment of lung disease in finishing pigs at slaughter pulmonary lesions and implications on productivity parameters |
| topic | lung lesions <i>Mycoplasma hyopneumoniae</i> porcine circovirus type 2 porcine reproductive and respiratory syndrome virus serology swine pathology |
| url | https://www.mdpi.com/2076-2615/11/12/3604 |
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