Effect of Streptococcus uberis infections on cell population of bovine mammary gland

Sláma, Petr; Havlicek, Zdenek; Skládanka, Jiří­; Marada, Petr

doi:10.5897/ajmr11.1559

Afr. J. Microbiol. Res.

2012

DOI: 10.5897/ajmr11.1559

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Effect of Streptococcus uberis infections on cell population of bovine mammary gland

Petr Sláma¹,

Zdenek Havlicek²,

Jiří Skládanka³

et al.

Abstract: Streptococcal bacteria are one of the most important pathogens causing different type of bovine mastitis. In this respect, it is very important to study effect of streptococcal infections on cell populations of bovine mammary gland to improve knowledge how to prevent and treat streptococcal infections of bovine mammary gland. Streptococcal bacteria can affect different cell processes, for example, programmed cell death (apoptosis) and expression of some cell receptors on leukocytes such as neutrophils, lymphoc… Show more

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2023

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Bovine Mastitis: Prevalence and Antimicrobial Patterns of Staphylococcus aureus and Escherichia coli in Smallholder Dairy Farms of Adawa and Enticho Towns, Tigray, Ethiopia

Hailay,

Gugsa,

Awol

et al. 2023

Preprint

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Mastitis is a costly and one of the most economically important production diseases affecting the dairy industry. A cross-sectional study was conducted from December 2015 to May 2016 in Adwa and Enticho Towns, Tigray, Ethiopia with the objectives of estimating the prevalence of bovine mastitis, isolation, characterization, and determination of antimicrobial profiles of E. coli and S. aureus from milk samples of dairy cows. A total of 156 lactating dairy cows from 23 smallholder dairy farms were sampled. Data related to herd size, breed, body condition, milking practice, farm hygiene, udder, and milk abnormalities were collected. California Mastitis Test (CMT) was performed. CMT-positive samples were collected. Bacteriological isolation, identification, and antibiogram testing were conducted. Data were recorded and analyzed for descriptive statistics. The overall prevalence rates of bovine mastitis, clinical mastitis, and subclinical mastitis in the study areas were found to be 35.9%, 3.85%, and 32%, respectively. Breed-based prevalence of mastitis was 21.74% and 41.8% for local and crossbreeds, respectively, (χ²=5.683; p ≤ 0.05). The overall prevalence of E. coli and S. aureus were 14.1% and 8.3%, respectively. The antimicrobial susceptibility test revealed that S. aureus was 100% susceptible to amoxicillin, kanamycin, and penicillin but 95.5% of E. coli isolates were susceptible to kanamycin, oxytetracycline, and streptomycin. Hence, regular CMT testing should be undertaken on every farm to screen subclinical mastitis-positive cows and all dairy farms should follow a good hygienic milking practice.

show abstract

Bovine Mastitis: Prevalence and Antimicrobial Patterns of Staphylococcus aureus and Escherichia coli in Smallholder Dairy Farms of Adawa and Enticho Towns, Tigray, Ethiopia

Hailay,

Gugsa,

Awol

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

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Effect of Streptococcus uberis infections on cell population of bovine mammary gland

Cited by 1 publication

References 52 publications

Bovine Mastitis: Prevalence and Antimicrobial Patterns of Staphylococcus aureus and Escherichia coli in Smallholder Dairy Farms of Adawa and Enticho Towns, Tigray, Ethiopia

Bovine Mastitis: Prevalence and Antimicrobial Patterns of Staphylococcus aureus and Escherichia coli in Smallholder Dairy Farms of Adawa and Enticho Towns, Tigray, Ethiopia

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