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Serum and Milk Levels of Antibodies to Bovine Viral Diarrhoea Virus, Bovine Herpesvirus-1 and -4, and Circulation of Different Bovine Herpesvirus-4 Genotypes in Dairy Cattle with Clinical Mastitis
INTRODUCTION: Bovine viral diarrhoea virus (BVDV) and bovine herpesvirus (BoHV)-1 and -4 are important causes of respiratory diseases and reproductive disorders of dairy cattle worldwide. MATERIAL AND METHODS: Investigation of BVDV and BoHV-1 and -4 antibody levels in the serum and milk of dairy cat...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Sciendo
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10062045/ https://www.ncbi.nlm.nih.gov/pubmed/37008768 http://dx.doi.org/10.2478/jvetres-2023-0010 |
Sumario: | INTRODUCTION: Bovine viral diarrhoea virus (BVDV) and bovine herpesvirus (BoHV)-1 and -4 are important causes of respiratory diseases and reproductive disorders of dairy cattle worldwide. MATERIAL AND METHODS: Investigation of BVDV and BoHV-1 and -4 antibody levels in the serum and milk of dairy cattle in a group with clinical mastitis and a healthy group was undertaken using an indirect ELISA, and identification of the BoHV-4 genotypes in clinical mastitis cases was attempted by PCR and sequencing. RESULTS: Antibodies specific to BVDV, BoHV-1 and BoHV-4 were detected in the serum and milk of all dairy cattle with clinical mastitis. The cut-off values for BVDV and BoHV-1 in the sera and milk were extremely high in both healthy and mastitic animals. However, BoHV-4 antibodies were detected only in the clinically mastitic cattle, and BoHV-4 levels were higher in milk than in sera among these animals. Genotypes I and II of BoHV-4 were detected in the milk samples of four seropositive cows with clinical mastitis from the same herd. CONCLUSION: The results of this investigation demonstrate that clinical mastitis cases in the same herd may have aetiology in different BoHV-4 genotypes. |
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