Isolation and Identification of Brucella Melitensis Biovar 1 using Bacteriological, Serological, and Molecular Tools from Saanen Goats (Capra aegagrus hircus) in Alborz, Iran

Brucellosis or Malta fever is one of the most prevalent zoonotic diseases considered as a health and economic concern.

The current study aimed to employ several methods to detect Brucella in blood and milk samples of saanen goat and use a safe and definitive method to diagnose this disease.

In this study, 122 blood samples and 122 milk samples were collected from saanen goats. After culture and serological-based isolation methods (RBPT, Wright, 2ME, and Ring test), DNA was extracted from all the blood and milk samples. PCR was carried out using B4 and B5 primers on all the extracted DNAs in order to detect the B. abortus and B. melitensis; PCR was carried out with Br.a and Br.m primers.

The results of all the blood samples were negative, but bacterial growth was observed in three milk samples, which was detected in biotyping, biovar 1 melitenensis. The PCR results for detection of Brucella spp. of nine blood samples and nine milk samples were positive. Using mPCR primers, B. melitensis were identified through all the nine milk and blood samples.

Herein, we found that better bacterial diagnostic system and choosing an appropriate technique for rapid detection, such as PCR and Real Time PCR, in addition to popular awareness and other functions of national veterinary medicine institute could control the diseases and decrease their incidence successfully.