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- W3206816485 abstract "Because a human observer is typically not present during milking process when automatic milking systems (AMS) are used, human observation is replaced by mastitis detection systems consisting of sensors and algorithms that create alerts. Several authors suggest that sensing systems to detect clinical mastitis (CM) are in need of improvement. The aim of this retrospective study was to observe trends over time of potential indicators of CM, thus identifying promising CM indicators and analysis methods. Data from a Northeastern USA commercial dairy farm with 1280 Holstein Friesian cows using 20 AMS units were used for the analysis. Over a one-year time period, there were 117 confirmed cases of CM in this herd. Thirty milking sessions prior to CM confirmation were used for this analysis (n = 3134). Of the 117 confirmed CM cases, 12% were in primiparous cows (L1), 24% in second lactation cows (L2) and 64% in third or greater lactation cows (L3+). Differences between group average CM-confirmed and non-CM quarters were observed prior to CM confirmation for quarter-level electrical conductivity (ECq), milk production rate (MPRq), average milk flow rate (AMFq) and peak milk flow rate (PMFq). Positive indications of CM were apparent well before confirmation of visual signs of CM for ECq and MPRq; however, positive indications for AMFq occurred only one day before CM confirmation. The combination of ECq, MPRq and AMFq is potentially useful for differentiating between an early (before visual signs of CM are manifested) detection and a false positive detection.HighlightsData from 1280 Holstein Friesian cows using 20 AMS units were used for the analysisThe progression over time of changes in milk and milking characteristics was investigated in the period prior to clinical mastitisChanges in quarter electrical conductivity indicate it is possible to detect developing mastitis before clinical signs are manifested" @default.
- W3206816485 created "2021-10-25" @default.
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- W3206816485 date "2021-01-01" @default.
- W3206816485 modified "2023-10-18" @default.
- W3206816485 title "Changes in electrical conductivity, milk production rate and milk flow rate prior to clinical mastitis confirmation" @default.
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- W3206816485 doi "https://doi.org/10.1080/1828051x.2021.1984852" @default.
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