Molecular Epidemiology and Characteristics of Streptococcus agalactiae Isolated from Bovine Mastitis in Large Dairy Herds of China

XueYun, Yang

doi:10.29261/pakvetj/2020.025

Cited by 4 publications

(3 citation statements)

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“…More than 135 types of bacterial species have been reported to be associated with bovine mastitis, but 20 different pathogenic bacteria are most commonly involved in mastitis of dairy animals (3,4). The most common mastitis-causing bacterial pathogens are Staphylococcus aureus, Escherichia coli, coagulase-negative staphylococci (CNS), Streptococcus dysgalactiae, Streptococcus uberis, and Streptococcus agalactiae (4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Mastitis Pathogens and Antimicrobial Susceptibility of Isolates From Cattle and Buffaloes in Northwest of Pakistan

Ali

Kamran²,

Raziq³

et al. 2021

Front. Vet. Sci.

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Mastitis is the most prevalent disease of dairy animals, imparting huge economic losses to the dairy industry. There is always a dire need to monitor the prevalence of mastitis, its bacteriology, and evaluation of antimicrobial susceptibilities for mastitis control and prevention. Therefore, the objectives of this study were to investigate: (i) the prevalence of mastitis in cattle and buffaloes; (ii) identification of bacteria associated with mastitis; (iii) antimicrobial susceptibility of bacterial isolates. Milk samples (n = 1,566) from cattle (n = 1,096) and buffaloes (n = 470) were processed for detection of mastitis using the California mastitis test in the year 2018–19. A total of 633 mastitic milk samples were further processed for bacteriology and antimicrobial susceptibility testing by the disc diffusion method. Overall, the prevalence of clinical and subclinical mastitis was 17 and 57% in both species. Clinical mastitis was higher in cattle (20%) compared to buffaloes (11%), whereas subclinical was higher in buffaloes (66%) than cattle (53%). Besides, month-wise prevalence was higher in hot and humid months in both species. Staphylococci spp. (34%) were the most predominant bacterial isolates from mastitic milk, followed by Escherichia coli (19.4%), Streptococci spp. (9%), and Klebsiella spp. (8%). Most of the bacteria were susceptible to gentamicin (92%) and enrofloxacin (88%), when a panel of 16 different antimicrobials was tested. Nevertheless, most of the isolates were resistant to sulphamethoxazole (99%), lincomycin (98%), oxytetracycline (89%), ampicillin (86%), and doxycycline (85%). This study concludes a high prevalence of mastitis caused by Staphylococcal spp. in cattle and buffaloes belonging to the northwest of Pakistan, and gentamicin and enrofloxacin might be appropriate antimicrobial agents in the treatment of bovine mastitis.

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Section: Introductionmentioning

confidence: 99%

Prevalence of Mastitis Pathogens and Antimicrobial Susceptibility of Isolates From Cattle and Buffaloes in Northwest of Pakistan

Ali

Kamran²,

Raziq³

et al. 2021

Front. Vet. Sci.

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“…The most common mastitis causing bacterial pathogens are Staphylococcus aureus, Escherichia coli, streptococci, etc. (Gao et al, 2017;Yang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Virulence Determinants of Escherichia coli Isolated from Buffalo Subclinical Mastitis

Singh¹,

Chhabra²,

Gangil³

et al. 2022

IJAR

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Background: E. coli associated buffalo mastitis is comparatively least studied area in microbes in India. Mastitis is an inflammatory reaction of the parenchyma of the mammary gland that can be of an infectious, traumatic or toxic nature. Methods: Total 300 buffalo milk samples were collected. E. coli were isolated from the mastitis samples and characterized for virulence factors haemolysis, biofilm formation, invasiveness and molecular characterization of fimH and Pap Gene. Result: Out of total 300 buffalo milk samples 52.33% were found positive for sub clinical mastitis. E. coli was recovered only from 17.19% samples. Hemolytic activity was exhibited in 23 (85.18%) out of 27 examined E. coli strains. Invasive property also has been determined in 12 (44.44%) isolates. A higher percentage of isolates were found positive for biofilm production by CRA (70.37%) than by tube (33.33%) method. In present study, fimH gene was detected in 8 isolates (29.62%). However, none of the isolate was found positive for pap gene.

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“…and Salmonella spp. are the main bacteria associated with mastitis (Ali et al, 2016;Yang et al, 2020;Aslam et al, 2021).…”

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confidence: 99%

Bacteriology, Antimicrobials Resistance and Susceptibility Profiles of Bacteria from Mastitic Cattle and Buffaloes of Khyber Pakhtunkhwa

Ali¹,

Kamran²,

Raziq³

et al. 2022

SJA

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Molecular Epidemiology and Characteristics of Streptococcus agalactiae Isolated from Bovine Mastitis in Large Dairy Herds of China

Cited by 4 publications

References 0 publications

Prevalence of Mastitis Pathogens and Antimicrobial Susceptibility of Isolates From Cattle and Buffaloes in Northwest of Pakistan

Prevalence of Mastitis Pathogens and Antimicrobial Susceptibility of Isolates From Cattle and Buffaloes in Northwest of Pakistan

Virulence Determinants of Escherichia coli Isolated from Buffalo Subclinical Mastitis

Bacteriology, Antimicrobials Resistance and Susceptibility Profiles of Bacteria from Mastitic Cattle and Buffaloes of Khyber Pakhtunkhwa

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