Exploration of semen quality analyzed by casa-mot systems of brahman bulls infected with BLV and BHV-1
Pichardo-Matamoros, Derling (Universidad de Costa Rica)
Sevilla, Francisco (Costa Rica Institute of Technology)
Elizondo-Salazar, Jorge (Universidad de Costa Rica)
Jiménez-Sánchez, Carlos (Universidad Nacional de Costa Rica)
Roldan, Eduardo R. S. (Museo Nacional de Ciencias Naturales. Consejo Superior de Investigaciones Científicas)
Soler, Carles (Universitat de València)
Gacem, Sabrina (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Valverde, Anthony (Costa Rica Institute of Technology)

Data:	2023
Resum:	Enzootic bovine leukosis virus (BLV) and bovine herpesvirus 1 (BHV-1) are very important infectious agents for the livestock industry worldwide. The present study aimed to explore the association between natural exposure to BLV and BHV-1 with sperm quality analyzed by Computer-Assisted Semen Analysis (CASA) systems. Ten sexually mature Brahman bulls, with sanitary status BLV + /BHV-1 + (n = 2), BLV - /BHV-1 + (n = 6) and BLV - /BHV-1 - (n = 2) were evaluated twice, 30 days apart. Results showed that sanitary status of each bull was not associated with semen quality. It was found that the quality of the semen from the second collection was better due to the interruption of sexual rest. The evidence thus revealed that a bull infected with BLV generated good-quality contaminated semen and, therefore, that it is essential to detect contaminated seminal samples to prevent the spread of BLV. A multivariate analysis showed the presence of four sperm subpopulations in Brahman bulls that differ significantly in their kinematic patterns and with respect to sanitary status (P < 0. 05), indicating that infection-free and seronegative bulls present the best kinematic parameters, which improved discrimination of sperm quality according to sanitary status. Overall, the analyses indicate that the seropositive-infected bulls with BLV and BHV-1 should be excluded from beef cattle farms.
Nota:	Altres ajuts: Facultad de Veterinaria de la Universidad Nacional de Costa Rica Proyecto No. 0029-09. Universidad de Costa Rica No. 737-B5-188
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:	Animal biotechnology ; Animal physiology
Publicat a:	Scientific reports, Vol. 13 (october 2023) , ISSN 2045-2322

DOI: 10.1038/s41598-023-45981-9
PMID: 37907654

13 p, 1.4 MB

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