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Common pathogens diagnosed in pig samples from year 2014 to 2017 by Veterinary Research Institute
2018
Aisya Naama T. | Azizah D. | Masrin A. | Nurulaini R. | Roslina H. | Zurin Azlin M. J. | Chandrawathani, P. | Sohayati A. R. | Nurul Fatiha A. S. | Roseliza R.
A total of 23,322 specimens collected between 2014 and 2017, froma total of 2,592 cases, were received in Veterinary Research Institute, Ipoh (VRI) from various states in Malaysia and testedfor common bacterial, viral, and parasitic diseases in pigs. The highest occurrence of isolated bacteria from 771 samples whichtested positive were Salmonella (47.38%) and Escherichia coli (15.68%), followed by Staphylococcus (6.62%), Streptococcus (5.57%), Klebsiella pneumonia (4.88%), Pseudomona (3.38%), Acinetobacter (3.14%), Aeromonas (2.79%), Enterobacter (2.44%), one each of Bacillus and Pasteurella multocida (1.74%), Enterococcus (1.39%) and Corynebacterium (1.05%). 1.74% of each bacteria detected were Moxarella, Aspergillus, Burkholderia andChromobacterium. Positive samples tested by ELISA was Japanese encephalitis virus (JEV) (9.15%), Aujezsky disease virus (ADV)(5.37%), porcine cirvo-virus-2 (PCV2) (5.09%) and porcine reproductive and respiratory syndrome virus (PRRSV) (4.52%). Positive amples tested by the molecular test wasPCV2 (1.62%), PRRSV (1.32%) and classical swine fever virus (CSFV) (0.4%). Serology tests were conducted on 11,305 samplesand reported positive for Brucella suis (15.32%), Brucella abortus (0.62%), Brucella melitensis (0.85%), and melioidosis (0.05%). Parasitology analyses on 99 samples. revealed presence of 10.1% coccidia and 1% each of helminths and Sarcocystis. Within the 4-year period, there were no positive samples for porcine parvovirus (PPV), Nipah virus, swine influenza virus (SIV), and bacteria of Johne’s disease and leptospirosis. Continuous assessment is required to establish a comprehensive baseline data of swine diseases in Malaysia.
Show more [+] Less [-]Development of an in-house Rose Bengal plate test for diagnosis of Brucellosis in goat
2016
Mohamed Ariff O. | Siti Khairani Bejo | Asinamai Athliamai Bitrus | Sani M. Y. | Zakaria Zunita
Brucellosis, caused by Brucella melitensis, is a significantproblem for both public and animal health worldwide. The Rose Bengal plate test (RBPT) antigen from Brucella melitensis local isolates were developed in this study. The performance of the assay wasinvestigated using serum samples collected from goats. A total of 1063 serum samples obtained from goats were examined for thepresence of antibodies against Brucella by in-house RBPT (LRBPT), commercial RBPT (Veterinary Laboratory Agency – VLA, UK) and Compliment Fixation test (CFT). The sensitivity and specificity wascalculated using CFT as the gold standard. Out of 1063 goats sera analyzed 364 (34.24%), 335 (31.51%), and 373 (35.08%) were found to be positive by LRBPT, commercial RBPT and CFT, respectively. The sensitivity calculated for the LRBPT, was 90.1% compared to commercial RBPT 85.0%. However, the specificity of the LRBPT was lower (95.9%), than the commercial RBPT (97.4%). Furthermorethe LRBPT has better value of NPV (94.7%) than commercial RBPT NPV(92.3%). While the PPV, of the commercial RBPT is higher (94.6%) than LRBPT (92.3%) respectively. High sensitive and low cost LRBPT compared to cRBPT B. melitensis RBPT test was successfully developed in this present study. Therefore it was concluded that this diagnostic test kit can complement and replace the availablecommercial RBPT which is relatively more expensive and less sensitive in detection of brucellosis in goats. It could also be used for epidemiological surveillance of caprine brucellosis in Malaysia.
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