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Open research questions in Milk Quality and Mastitis in Dairy Cows

27 unresolved questions extracted from the limitations and future-work sections of 549 Milk Quality and Mastitis in Dairy Cows papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Future research should focus on validating this screening approach under simulated and and on incorporating a broader range of bacterial isolates to field-relevant conditions, ‘dirty’ further assess its applicability as a complementary method to standardised culture-based efficacy testing.

    Rapid efficacy testing of cattle footbath disinfectants by flow cytometry: a laboratory-validated screening method complementary to EN 1656 · 2026 · DOI

  • However, limited information is available regarding the optimum level of HF genetic contribution that maximizes milk production while maintaining disease resilience in crossbred cattle under smallholder farming conditions.

    Relationship between Holstein Friesian genetic contribution, milk yield, and disease incidence in F1 and F2 crossbred cattle · 2026 · DOI

  • 50(1):8-15 is a good diagnostic method ultrasonography for pathological changes of the mammary gland, it might not be applicable to be used for large numbers of animals and without trained personnel.

    Accuracy of Field Methods in Detection of Bovine Subclinical Mastitis · 2026 · DOI

  • These results provide The inclusion of lactoferrin alongside traditional milk a valuable basis for further research into the interactions quality indicators provides a more comprehensive under- between nutrition, physiological status, and the defence standing of mammary gland physiology and its seasonal mechanisms of the mammary gland. improve reproductive and production performance, and increase technological milk quality, while also creating a Ethical Statement solid foundation for further research into the interactions between nutrition, physiological status, and mammary Ethical approval was not necessary for this work.

    Seasonal Variation in Milk Composition and Physiological Indicators in Dairy Cows: A One-Year Study from Eastern Slovakia · 2026 · DOI

  • This study presents some limitations that should be considered when interpreting the results. First, variant identification was performed at the transcriptome level. Although sequences were pooled within microbiologi- cal conditions prior to variant calling, variant detection could have been influenced by gene expression levels, allele-specific expression, and sequencing depth, and the absence of a variant in a given condition does not nec- essarily indicate its genomic absence. The identified vari- ants should thus be interpreted as condition-associated detected sequence variants (i.e. variants detected in spe- cific microbiological conditions) rather than markers of genetic susceptibility. In addition, RNA was extracted from milk somatic cells, whose cellular composition may vary depending on the inflammatory status of the mammary gland, potentially affecting variant detection. Further genomic and functional validation, ideally in an independent population, will be necessary to confirm their genomic origin and clarify their potential biological and breeding relevance.

    Transcriptome-derived variants in milk reveal host response signatures to subclinical intramammary infection in Holstein cattle · 2026 · DOI

  • Although bacteria were detected in the culture-positive milk sam- ples, a definitive diagnosis of mastitis could not be established due to the limitation of unavailability of somatic cell count (SCC) results.

    Occurrence and antibiotic resistance profiles of mastitis pathogens in North West South African dairy herds · 2026 · DOI

  • The combination of high feature dimensionality and strong internal metrics, especially under SMOTE, indicates a real risk of overfitting; SMOTE-based results should be regarded as illustrative of pipeline behavior under artificial class balance rather than as deployable performance estimates.

    Detection of Estrus in Dairy Cows: A Proof-of-Concept Near-Infrared Milk Sensing and Machine-Learning Study · 2026 · DOI

  • Both this study and earlier work (Takemura et al. 2015) rely on very small cohorts, and differences in herd, management, and data-processing pipelines mean apparent performance gains may be dataset-specific or partly driven by overfitting; larger, multi-site studies with consistent validation protocols are needed before robust comparison of absolute performance can be made.

    Detection of Estrus in Dairy Cows: A Proof-of-Concept Near-Infrared Milk Sensing and Machine-Learning Study · 2026 · DOI

  • This study aimed to establish a classical multiplex protocol for the rapid identification of cow DNA in goat and sheep cheeses so as to help the further investigation on the authenticity of these products.

    Identification of cow DNA in sheep and goat traditional dairy products. · 2013 · DOI

  • Practical implications: Though the ECM method of determination of the subclinical mastitis of the milchcows is well established in the world, it is not yet known well enough in the Slovene practice as a method of diagnosing the subclinical mastitis.

    Mastitis detection based on electric conductivity of milk · 2009

  • Although the study was limited to a single isolate, the findings estab- lish an important genomic baseline for future surveillance and sup- port the development of evidence-based mastitis control, antimicrobial stewardship, and One Health monitoring strategies in the region.

    Single-isolate genomic characterization and cgMLST allelic comparison of a bovine mastitis-associated Staphylococcus aureus ST151 isolate from Kazakhstan · 2026 · DOI

  • Although somatic cell count (SCC) is widely used in dairy ruminants, its diagnostic value in jennies remains unclear.

    Duct‐level evaluation of mammary gland health, somatic cell count and bacterial flora in lactating jennies · 2026 · DOI

  • Careful dietary planning with professional supervision, alongside further research on more substitute milk sources and their acceptability, is recommended.

    Substitute for Casein Protein in Cow’s Milk of Children with Autism Spectrum Disorder: A Review · 2026 · DOI

  • Although veterinarians achieved better results via in-clinic bacteriological examinations, their ability to identify specific bacterial species was insufficient.

    Unsuitable Decisions and Persistent Infection: The Reality of Farmer and Veterinarian Mastitis Treatment Decisions in Denmark · 2026 · DOI

  • Rumination time is considered a sensitive behavioral indicator of physiological and metabolic status in dairy cows, yet its relationships with biochemical and milk quality parameters under commercial robotic milking conditions remain insufficiently described.

    Association of Rumination Time with Metabolic Imbalance and Milk Quality Traits in Holstein Cattle · 2026 · DOI

  • Estrus labels were derived from expert visual observation supplemented by targeted ultrasound rather than a biochemical or device-based gold standard such as progesterone assays or automated activity monitors.

    Detection of Estrus in Dairy Cows: A Proof-of-Concept Near-Infrared Milk Sensing and Machine-Learning Study · 2026 · DOI

  • Results represent optimistic upper bounds rather than realistic field performance and should be interpreted as hypothesis-generating evidence of technical feasibility rather than definitive validation.

    Detection of Estrus in Dairy Cows: A Proof-of-Concept Near-Infrared Milk Sensing and Machine-Learning Study · 2026 · DOI

  • It exemplifies how inquirers dealt with and thought about the difficult problem of establishing causes for something in situations when not much is known about a phenomenon of interest.

    Chapter 2. Peculiar Blue Spots: Evidence and Causes around 1800 · 2023 · DOI

  • INTRODUCTION: The characteristics of immune factors in somatic cells from lactating dairy cows and their association with commensal bacteria in normal milk have not been clarified.

    Relationship between mRNA of immune factors expressed by milk somatic cells and bacteria present in healthy lactating Holstein cows · 2019 · DOI

  • Despite the considerable progress that has been made to better understand the composition, excretion, transport and synthesis of milk components, the mechanisms that regulate these processes remain unclear.

    Synteza mleka ludzkiego · 2012 · DOI

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27 open questions have been extracted from the limitations and future-work passages of 549 Milk Quality and Mastitis in Dairy Cows papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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