title: Agreement between bovine respiratory disease scoring systems for pre-weaned dairy calves.
abstract: Clinical scoring systems have been proposed for respiratory disease diagnosis in calves, including the Wisconsin (WI) system (McGuirk in 2008) which uses five clinical signs, each partitioned into four levels of severity. Recently, we developed the California (CA) bovine respiratory disease (BRD) scoring system requiring less calf handling and consisting of six clinical signs, each classified as normal or abnormal. The objective of this study was to estimate the on-farm agreement between the WI and the CA scoring systems. A total of 100 calves were enrolled on a CA dairy and assessed for BRD case status using the two scoring systems simultaneously. The Kappa coefficient of agreement between these two systems was estimated to be 0.85, which indicated excellent agreement beyond chance. The simpler design and reduced calf handling required by the CA BRD scoring system may make it advantageous for on-farm use.
authors.affiliation: Veterinary Medicine Teaching and Research Center,School of Veterinary Medicine, University of California,Davis,Tulare,California,USA.
authors.forename: Sharif S
authors.initials: SS
authors.lastname: Aly
authors.affiliation: Veterinary Medicine Teaching and Research Center,School of Veterinary Medicine, University of California,Davis,Tulare,California,USA.
authors.forename: William J
authors.initials: WJ
authors.lastname: Love
authors.affiliation: Veterinary Medicine Teaching and Research Center,School of Veterinary Medicine, University of California,Davis,Tulare,California,USA.
authors.forename: Deniece R
authors.initials: DR
authors.lastname: Williams
authors.affiliation: Veterinary Medicine Teaching and Research Center,School of Veterinary Medicine, University of California,Davis,Tulare,California,USA.
authors.forename: Terry W
authors.initials: TW
authors.lastname: Lehenbauer
authors.affiliation: Department of Animal Science,University of California,Davis,California,USA.
authors.forename: Alison
authors.initials: A
authors.lastname: Van Eenennaam
authors.affiliation: Department of Statistics,University of California,Davis,California,USA.
authors.forename: Christiana
authors.initials: C
authors.lastname: Drake
authors.affiliation: Department of Population Health and Reproduction,School of Veterinary Medicine, University of California,Davis,California,USA.
authors.forename: Philip H
authors.initials: PH
authors.lastname: Kass
authors.affiliation: Department of Population Health and Reproduction,School of Veterinary Medicine, University of California,Davis,California,USA.
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Farver
mesh_terms: D000818:Animals; D048090:Bovine Respiratory Disease Complex / Q000175:diagnosis*; D002417:Cattle; D003612:Dairying; D011379:Prognosis