Presence of parainfluenza-3 and caprine arthritis-encephalitis viruses in the respiratory tract of goats in Can Tho city

Abstract

The study was conducted from January 2024 to June 2024 to determine the presence of parainfluenza-3 (PI-3) and caprine arthritis-encephalitis (CAEV) viruses in the respiratory tract of goats in small-scale farms in Can Tho city. A total of 91 pooled nasal samples from 456 meat and dairy goats of all ages and health conditions were collected in this study. Viral RNA in nasal fluids was extracted using the Isolate RNA Mini kit, and RT-PCR was performed with two pairs of specific primers to determine the presence of the virus. The survey results showed that the PI-3 (16.48%) was more prevalent than CAEV (4.40%) in the respiratory tract of goats, and there was one sample co infected with PI-3 and CAEV. The analysis results also showed that PI-3 was present in meat goats
(22.58%) higher than in dairy goats (3.45%), in goats with respiratory symptoms (25.58%) higher than in healthy goats (8.33%), and there was no difference between goats under 6 months of age and over 6 months of age. CAEV was only detected in meat goats (6.45%) and under 6 months of age (11.11%), but there was no difference between goats with respiratory symptoms (2.33%) and healthy goats (6.25%). Therefore, it is necessary to control the presence of these severe respiratory virus strains in goats raised in these farms in Can Tho city