Evolution of the Seroprevalence of Pestivirus and Respiratory Viral Infections in Spanish Feedlot Lambs
Rodrigo Navarro, Teresa (Universidad de Zaragoza. Departamento de Patología Animal)
González, José María (Universidad de Zaragoza. Departamento de Patología Animal)
Ortín, Aurora (Universidad de Zaragoza. Departamento de Patología Animal)
Cabezón Ponsoda, Óscar (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
de Las Heras Guillamón, Marcelo (Universidad de Zaragoza. Departamento de Patología Animal)
Lacasta, Delia (Universidad de Zaragoza. Departamento de Patología Animal)

Data:	2021
Resum:	The presence of respiratory viruses and pestiviruses in sheep has been widely demonstrated, and their ability to cause injury and predispose to respiratory processes have been proven experimentally. A longitudinal observational study was performed to determine the seroprevalence of bovine parainfluenza virus type 3 (BPIV-3), bovine respiratory syncytial virus (BRSV), bovine herpesvirus type 1 (BHV-1) and pestiviruses in 120 lambs at the beginning and the end of the fattening period. During this time, the animals were clinically monitored, their growth was recorded, and post-mortem examinations were performed in order to identify the presence of pneumonic lesions in the animals. Seroconversion to all viruses tested except BHV-1 was detected at the end of the period. Initially, BPIV-3 antibodies were the most frequently found, while the most common seroconversion through the analysed period occurred to BRSV. Only 10. 8% of the lambs showed no detectable levels of antibodies against any of the tested viruses at the end of the survey. In addition, no statistical differences were found in the presentation of respiratory clinical signs, pneumonic lesions nor in the production performance between lambs that seroconverted and those which did not, except in the case of pestiviruses. The seroconversion to pestiviruses was associated with a reduction in the final weight of the lambs.
Ajuts:	Ministerio de Economía y Competitividad AGL2015-67690-R
Nota:	Altres ajuts: MAAMA/20140020001835;
Nota:	Altres ajuts: CA2016-2020/A15-17R
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Ovelles -- Malalties ; Lamb ; Feedlot ; Bovine parainfluenza virus type 3 virus ; Bovine respiratory syncytial virus ; Bovine herpesvirus type 1 ; Pestivirus
Publicat a:	Animals, Vol. 11 Núm. 1 (2021) , p. 160, ISSN 2076-2615

DOI: 10.3390/ani11010160
PMID: 33445625

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