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http://hdl.handle.net/10553/113221
Title: | Assessment of lung disease in finishing pigs at slaughter: Pulmonary lesions and implications on productivity parameters | Authors: | Paz Sanchez, Yania Herráez Thomas, Pedro Manuel Quesada Canales, Ildefonso Óscar Poveda Turrado, Carlos Guillermo Diaz Delgado, Josue Quintana Montesdeoca, María Del Pino Stefanova, Elena Plamenova Andrada Borzollino, Marisa Ana |
UNESCO Clasification: | 310911 Virología 310907 Patología |
Keywords: | Lung Lesions Mycoplasma Hyopneumoniae Porcine Circovirus Type 2 Porcine Reproductive And Respiratory Syndrome Virus Serology, et al |
Issue Date: | 2021 | Journal: | Animals | Abstract: | Swine respiratory disease is associated with productive losses. We evaluated the prevalence of lung lesions with an emphasis on Mycoplasma hyopneumoniae (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. | URI: | http://hdl.handle.net/10553/113221 | DOI: | 10.3390/ani11123604 | Source: | Animals [EISSN 2076-2615], v. 11 (12), (Diciembre 2021) |
Appears in Collections: | Artículos |
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