Receiver-operating characteristic curves for somatic cell scores and California mastitis test in Valle del Be lice dairy sheep

V. Riggio, L.L. Pesce, S. Morreale, B. Portolano

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Using receiver-operating characteristic (ROC) curve methodology this study was designed to assess the diagnostic effectiveness of somatic cell count (SCC) and the California mastitis test (CMT) in Valle del Belice sheep, and to propose and evaluate threshold values for those tests that would optimally discriminate between healthy and infected udders. Milk samples (n = 1357) were collected from 684 sheep in four flocks. The prevalence of infection, as determined by positive bacterial culture was 0.36, 87.7% of which were minor and 12.3% major pathogens. Of the culture negative samples, 83.7% had an SCC <500,000/mL and 97.4% had
Original languageEnglish
Pages (from-to)528-532
JournalThe Veterinary Journal
Volume196
Issue number3
DOIs
Publication statusPublished - 2013

Keywords

  • subclinical mastitis
  • intramammary infections
  • milk-composition
  • roc analysis
  • count
  • ewes
  • areas
  • udder
  • cows

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