ArticleThe Onderstepoort journal of veterinary research2017
Somatic cell count thresholds in composite and quarter milk samples as indicator of bovine intramammary infection status.
Article in The Onderstepoort journal of veterinary research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed.
- Machine learning-based prediction of subclinical mastitis in large-scale dairy herds using a locally established somatic cell count threshold.Scientific reports · 2026Article
- Identification ofMicroorganisms · 2026Article
- Antimicrobial resistance and virulence gene profiles of Enterococcus faecalis and Enterococcus faecium isolated from subclinical bovine mastitis milk and cow dung.Scientific reports · 2025Article
- Short Communication: Evaluation of MALDI-TOF and Sequencing Technique as Typing Tools forMicroorganisms · 2025Article
- Comprehensive Prevention and Control of Mastitis in Dairy Cows: From Etiology to Prevention.Veterinary sciences · 2025Review
- Investigating the Alleviating Effects of Dihydromyricetin on Subclinical Mastitis in Dairy Cows: Insights from Gut Microbiota and Metabolomic Analysis.Microorganisms · 2025Article
- Antimicrobial Resistance and Virulence Determinants ofAnimals : an open access journal from MDPI · 2025Article
- Integrated microbiome and metabolome analysis reveals altered gut microbial communities and metabolite profiles in dairy cows with subclinical mastitis.BMC microbiology · 2025Article
- Use of approved cefazolin based intramammary dry goat treatment and its effects on the milk microbiota.Scientific reports · 2025Article
- Population structure, resistome, and virulome ofFrontiers in cellular and infection microbiology · 2025Article
- Detection ofAnimals : an open access journal from MDPI · 2024Article
- Comprehensive whole genome analysis ofFrontiers in microbiology · 2024Article
- Basic concepts, recent advances, and future perspectives in the diagnosis of bovine mastitis.Journal of veterinary science · 2024Review
- Characterisation of Milk Microbiota from Subclinical Mastitis and Apparently Healthy Dairy Cattle in Free State Province, South Africa.Veterinary sciences · 2023Article
- Biochemical and Computational Assessment of Acute Phase Proteins in Dairy Cows Affected with Subclinical Mastitis.Current issues in molecular biology · 2023Article
- Effect of Antibiotic Compared to Non-Antibiotic Dry Cow Treatment on the Bacteriological Cure of Intramammary Infections during the Dry Period-A Retrospective Cross-Sectional Study.Antibiotics (Basel, Switzerland) · 2023Article
- Universal drivers of cheese microbiomes.iScience · 2023Article
- Health concerns about possible long-term effects of legally marketed milk and dairy from animals with intramammary infections.Frontiers in public health · 2023Article
- Methylome and transcriptome data integration reveals potential roles of DNA methylation and candidate biomarkers of cow Streptococcus uberis subclinical mastitis.Journal of animal science and biotechnology · 2022Article
- Udder Health Monitoring for Prevention of Bovine Mastitis and Improvement of Milk Quality.Bioengineering (Basel, Switzerland) · 2022Review
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The objective of the study was to establish an operational somatic cell count (SCC) threshold to predict the presence of intramammary infection (IMI) in composite milk samples and compare findings with those in quarter milk samples. South African dairy producers now preferred composite milk samples for herd udder health analysis because of increasing cow numbers, convenience of sampling and lower cost. A retrospective study was conducted on 345 461 composite and 89 638 quarter milk samples from South African herds. Variance estimates for the proportion of quarter samples testing positive were adjusted to account for the lack of their independence within individual cows. The IMI at SCC thresholds of 150 000 cells/mL and 200 000 cells/mL differed only by 3.26% in composite milk samples. Youden's index indicated the optimum SCC thresholds for composite and quarter milk samples as 150 000 cells/mL and 200 000 cells/mL, respectively. At 150 000 cells/mL, sensitivity (95% confidence intervals [CI]) in composite milk samples was 65.3% (64.0%, 66.6%) and specificity was 66.8% (65.7%, 67.9%); and in quarter milk samples, sensitivity at 200 000 cells/ mL was 70.8% (69.5%, 72.0%) and specificity was 63.6% (62.4%, 64.8%). The likelihood of infection for udders and quarters, respectively, was 1.034 and 1.327 at an SCC threshold of 150 000 cells/mL and 0.864 cells/mL and 1.177 cells/mL at 200 000 cells/mL. The area under the curve of the receiver operating characteristics graph was 0.7084 and 0.7277 for composite and quarter samples, respectively, indicating that the SCC test could be considered as a good indicator of IMI in both sample types.
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