<i>Staphylococcus aureus</i> and Dairy Udder

Aqib, Amjad Islam; Ijaz, Muhammad; Shoaib, Muhammad; Muzammil, Iqra; Hussain, Hamid; Zaheer, Tean; Ahmed, Rais; Sarwar, Iqra; Khan, Yasir; Naseer, Muhammad Aamir

doi:10.5772/intechopen.95864

Cited by 3 publications

(2 citation statements)

References 78 publications

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“…According to the study conducted by Schmenger et al [41], bacteriological cure rates for S. aureus, Coliforms, CNS, and S. dysgalactiae were 44.7%, 87.1%, 77%, and 82.9%, respectively. S. aureus is a major cause of mastitis, and it's low cure rate, making it one of the main causes of post-calving IMI [42]. According to Shephard et al [43], the cure rate for DCT of S. aureus was 47.7%.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of a new method of selective dry cow treatment using microbiological culture and antibiogram results

Navaei,

Vojgani,

Khoramian

et al. 2024

Preprint

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Background: Due to financial issues and the rise in antimicrobial resistance, updating dry cow therapy (DCT) methods is still being researched by scientists worldwide. This investigation aimed to evaluate a new method of selective treatment by choosing an appropriate dry ointment for each cow based on the individual culture and antibiogram results and examining its effects on clinical and subclinical mastitis indices, cure rate, new infection rate, and milk yield during the first 30 days in milk (DIM). Results: For this research, a total of 291 Holstein dairy cows were selected from three herds. These cows had a somatic cell count (SCC) > 200,000 (cells/mL) just before the dry period, had positive composite milk culture results, and were gradually dried over five days. The milk samples were taken before dry-off and on the first day after parturition (1 DIM), as well as 3 days before dry-off and between 3 and 7 days postpartum to evaluate SCC. The cows were randomly divided into two groups of control (n = 151) and treatment (n = 140). The control group included cows that were treated with dry cow ointment regardless of the pathogens involved in mammary infection, and the treatment group contained cows that received DCT ointment based on the type of pathogen isolated during culture and the antibiogram results before dry-off. The results revealed that the cure rate in the treatment group was significantly better than in the control group (P = 0.0006). In addition, the rate of new intramammary infections (IMI, P = 0.0006) and the rate of clinical mastitis (P = 0.015) decreased in the first 30 DIM in the treatment group. Nevertheless, SCC and milk yield at the onset of the subsequent lactation did not differ significantly between the control and treatment groups (P > 0.05). Conclusion: According to the findings of our study, based on individual milk culture and antibiogram results, selectively treating cows with appropriate dry ointments had significant benefits for increasing the cure rate of pathogens, lowering the incidence of new IMIs, and minimizing the risk of clinical mastitis in the first 30 DIM.

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Section: Discussionmentioning

confidence: 99%

Evaluation of a new method of selective dry cow treatment using microbiological culture and antibiogram results

Navaei,

Vojgani,

Khoramian

et al. 2024

Preprint

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“…Recently, recombinant lysostaphin has been found to cure 95% S. aureus udder infection (Aqib et al 2021).…”

Section: S Aureus Control In the Milk Chainmentioning

confidence: 99%

Staphylococcus aureus: significance, control and rapid detection across milk chain

Wandhare

Singh

Kaur

et al. 2021

IJDS

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Staphylococcus aureus is a major pathogen of public health concern with dominant role in food poisoning outbreaks, nosocomial and community-acquired infections, and also in bovine mastitis. Milk being a rich nutritious source for growth and proliferation of pathogenic species is prone to bacterial contamination, which can lead to spoilage and food poisoning. Toxin production, heat resistance, biofilm formation, antibiotic and lysozyme resistance are among the characteristics that contribute to S. aureus pathogenicity. S. aureus and its enterotoxins in food remains a daunting challenge, despite global efforts towards its mitigation. There is a need for rapid and costeffective on-site detection of S. aureus in milk to prevent its transmission. The article outlines the significance of S. aureus in milk chain, its ability to adapt to environmental stresses, possible mitigation and rapid detection strategies; that may help to curtail its presence in milk chain and linked food poisoning episodes; besides ensuring food quality and consumer safety.

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Genomic and Therapeutic Analyses of Staphylococcus aureus Isolated from Cattle Reproductive Tract

Shafique

Aqib

Liang

et al. 2022

BioMed Research International

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Staphylococcus aureus is emerging as a ubiquitous multidrug-resistant pathogen circulating among animals, humans, and their environment. The current study focused on molecular epidemiology and evidence-based treatment against S. aureus from bovine endometritis. For this study, n = 304 cattle were screened for endometritis using ultrasonography while presenting case history, and clinical signs were also considered. S. aureus was isolated from endometritis-positive uterine samples which were further put to molecular identification, phylogenetic analysis, susceptibility to antibiotics, and testing of novel drug combinations in both in vitro and field trials. The findings of the study revealed 78.20% of bovine endometritis samples positive for S. aureus, while nuc gene-based genotyping of S. aureus thermal nuclease (SA-1, SA-2, and SA-3) showed close relatedness with S. aureus thermal nuclease of Bos taurus. Drug combinations showed 5.00 to 188.88% rise in zones of inhibitions (ZOI) for drugs used in combination compared to the drugs used alone. Gentamicin in combination with amoxicillin and enrofloxacin with metronidazol showed synergistic interactions in an in vitro trial. Co-amoxiclav with gentamicin, gentamicin with enrofloxacin, and metronidazole with enrofloxacin showed 100%, 80%, and 60% efficacy in treating clinical cases in field trials, respectively. As a result, the study came to the conclusion the higher prevalence of endometritis-based S. aureus, genetic host shifts, narrow options for single drugs, and need for novel drug combinations to treat clinical cases.

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Staphylococcus aureus and Dairy Udder

Cited by 3 publications

References 78 publications

Evaluation of a new method of selective dry cow treatment using microbiological culture and antibiogram results

Evaluation of a new method of selective dry cow treatment using microbiological culture and antibiogram results

Staphylococcus aureus: significance, control and rapid detection across milk chain

Genomic and Therapeutic Analyses of Staphylococcus aureus Isolated from Cattle Reproductive Tract

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