Rajeswari Shome1, Triveni Kalleshamurthy2, Krithiga Natesan2, K Rohit Jayaprakash3, Kavya Byrareddy3, Nagalingam Mohandoss2, Swati Sahay2, Bibek R Shome2, Jagadish Hiremath2, Habibur Rahman2, Sukhadeo B Barbuddhe4. 1. Indian Council of Agricultural Research, National Institute of Veterinary Epidemiology and Disease Informatics, Ramagondanahalli, Bengaluru, 560064, India. Electronic address: rajeswarishome@gmail.com. 2. Indian Council of Agricultural Research, National Institute of Veterinary Epidemiology and Disease Informatics, Ramagondanahalli, Bengaluru, 560064, India. 3. Veterinary College, Karnataka Veterinary, Animal and Fisheries Sciences University, Hebbal, Bangalore, 560024, India. 4. ICAR-National Research Centre on Meat, Chengicherla, Hyderabad, 500092, India.
Abstract
BACKGROUND: Swine brucellosis is a zoonotic disease caused by Brucella suis. The study describes the occurrence of brucellosis in two organized piggeries in Southern India. METHODS: A total of 585 serum samples comprising 575 from pigs and 10 from animal handlers were collected and tested by serological tests and PCR. Tissue samples were collected for isolation of the pathogen. RESULTS: Out of 575 serum samples screened, 236 (41.04%) were positive for brucellosis by both Rose Bengal plate test (RBPT) and indirect ELISA (iELISA) and 47 (8.17) samples showed Brucella DNA amplification by genus specific PCR. The sows those aborted and 19 boars with orchitis were seropositive for brucellosis indicating association of clinical symptoms with brucellosis seropositivity. Two of 10 pig handlers were positive by RBPT and showed significant serum agglutination test (SAT) titres of >1:160 and 1:320. B. suis bvI was isolated and identified by biochemical tests and confirmed by amplification Brucella genus and Bruce ladder PCRs from vaginal and testicular samples. CONCLUSIONS: The introduction of untested breeding boars in the farms might have resulted in the disease transmission and spread. The present study highlighted the diagnosis of B. suis bvI as a cause of abortions in the pigs and occupational exposure to farm personnel.
BACKGROUND:Swinebrucellosis is a zoonotic disease caused by Brucella suis. The study describes the occurrence of brucellosis in two organized piggeries in Southern India. METHODS: A total of 585 serum samples comprising 575 from pigs and 10 from animal handlers were collected and tested by serological tests and PCR. Tissue samples were collected for isolation of the pathogen. RESULTS: Out of 575 serum samples screened, 236 (41.04%) were positive for brucellosis by both Rose Bengal plate test (RBPT) and indirect ELISA (iELISA) and 47 (8.17) samples showed Brucella DNA amplification by genus specific PCR. The sows those aborted and 19 boars with orchitis were seropositive for brucellosis indicating association of clinical symptoms with brucellosis seropositivity. Two of 10 pig handlers were positive by RBPT and showed significant serum agglutination test (SAT) titres of >1:160 and 1:320. B. suis bvI was isolated and identified by biochemical tests and confirmed by amplification Brucella genus and Bruce ladder PCRs from vaginal and testicular samples. CONCLUSIONS: The introduction of untested breeding boars in the farms might have resulted in the disease transmission and spread. The present study highlighted the diagnosis of B. suis bvI as a cause of abortions in the pigs and occupational exposure to farm personnel.
Authors: Agustín Rebollada-Merino; Marta Pérez-Sancho; Antonio Rodríguez-Bertos; Nerea García; Irene Martínez; Alejandro Navarro; Lucas Domínguez; Teresa García-Seco Journal: Front Vet Sci Date: 2022-06-21
Authors: Walid Elmonir; Nour H Abdel-Hamid; Mahmoud E R Hamdy; Eman I M Beleta; Mohamed El-Diasty; Falk Melzer; Gamal Wareth; Heinrich Neubauer Journal: BMC Vet Res Date: 2022-06-13 Impact factor: 2.792