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Genetic analysis of antimicrobial resistance in Escherichia coli O157:H7 isolated from healthy cattle and buffaloes in Central Vietnam Genetic analysis of antimicrobial resistance in Escherichia coli O157:H7 isolated from healthy cattle and buffaloes in Central Vietnam Bui Thi Ba, Dao Hoai Thu, Vo Thanh Thin, Dang Van Tuan, Do Van Tan and Vu Khac Hung - We investigated and analyzed the antibiotic resistance genes of 34 E. coli O157:H7 strains isolated from healthy cattle and buffaloes in Central region of Vietnam. The results showed that most of the strains carried at least 1 antibiotic resistance gene. Among 34 strains, 23/34 (67.65%) strains possessed sulfonamide resistance genes. The amount of strains carried β-lactam resistance genes was 22/34 (64.7%) while this figure for aminoglycoside was 19/34 (55.88%); tetracycline and phenicol were the same (13/34) (38.24%) and quinolone was the lowest (11/34) (32.35%).
RESULTS OF ISOLATION AND DETERMINATION OF SOME BIOLOGICAL CHARACTERISTICS OF PASTEURELLA MULTOCIDA IN PIGS POSITIVE WITH PRRSV AT BAC GIANG PROVINCE. RESULTS OF ISOLATION AND DETERMINATION OF SOME BIOLOGICAL CHARACTERISTICS OF PASTEURELLA MULTOCIDA IN PIGS POSITIVE WITH PRRSV AT BAC GIANG PROVINCE. Le Van Duong, Nguyen Quang Tuyen, Cu Huu Phu and Hoang Đang Huyen - 245 samples in pigs positive with respiratory and reproduction syndrome virus (PRRSV) in Bac Giang province were collected, investigated and the testing results showed that:
DETERMINATION OF THE VERTICAL TRASMISSION OF DUCK ENTERITIS VIRUS  FROM DUCK BREEDERS TO DUCKLINGS BY USING PCR AND RT- PCR TECHNIQUES. DETERMINATION OF THE VERTICAL TRASMISSION OF DUCK ENTERITIS VIRUS FROM DUCK BREEDERS TO DUCKLINGS BY USING PCR AND RT- PCR TECHNIQUES. Tran Ngoc Bich and Jean-Luc GUERIN - To confirm the vertical transmission of Duck Enteritis Virus (DEV) from duck breeders to their ducklings, we have used methods of molecular biology tests (PCR and RT-PCR). The result of investigation was confirmed to have the vertical transmission of DEV from infected duck breeders to their ducklings.
Prevalence of PRRSV infection and effect of PRRSV-Leptospira coinfection on reproductive performance of sows in Tien Giang province Prevalence of PRRSV infection and effect of PRRSV-Leptospira coinfection on reproductive performance of sows in Tien Giang province Cao Van That, Tran Tiị Dan, Tran Thi Bich Lien, Thai Quoc Hieu, Nguyen Van Han, Ho Huynh Mai, Nguyen Thi Men - Based on the lab test results and information collected from 235 sows unvaccinated against PRRS, including 205 clinically heathy ones being not in PRRS outbreaks,
Epidemiological characteristics of PRRS outbreaks in 2010 and bio-security implementation in Tien Giang province Epidemiological characteristics of PRRS outbreaks in 2010 and bio-security implementation in Tien Giang province Nguyen Thi Men, Tran Thi Dan, Nguyen Thi Phuoc Ninh, Le Thanh Hien, Thai Quoc Hieu, Nguyen Van Han - Epidemiological parameters and preventive measures of PRRS in 2010-2011 in three districts of Tien Giang province were investigated and analyzed from 2,267 surveyed questionnaires for disease occurrence, in 348 pig-raising households and 37,907 pigs vaccinated against PRRSV (serotype JXA1-R ) in 354 households.
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