UNASSIGNED: This paper reports on a field validation of previously developed protocols for evaluating the performance of in-line @entity1271 -detection systems. The protocols outlined 2 requirements of these systems: (1) to detect @entity291 with @entity922 ( @entity922 ) promptly and accurately to enable timely and appropriate treatment and (2) to identify @entity291 with high somatic cell count ( @entity7018 ) to manage bulk milk @entity7018 levels. Gold standard measures, evaluation tests, performance measures, and performance targets were proposed. The current study validated the protocols on commercial dairy farms with automated in-line @entity1271 -detection systems using both electrical conductivity (EC) and @entity7018 sensor systems that both monitor at whole-udder level. The protocol for requirement 1 was applied on 3 commercial farms. For requirement 2, the protocol was applied on 6 farms; 3 of them had low bulk milk @entity7018 (128 * 10(3)cells/mL) and were the same farms as used for field evaluation of requirement 1. Three farms with high bulk milk @entity7018 (270 * 10(3) cells/mL) were additionally enrolled. The field evaluation methodology and results were presented at a workshop including representation from 7 international suppliers of in-line @entity1271 -detection systems. Feedback was sought on the acceptance of standardized performance evaluation protocols and recommended refinements to the protocols. Although the methodology for requirement 1 was relatively labor intensive and required organizational skills over an extended period, no major issues were encountered during the field validation of both protocols. The validation, thus, proved the protocols to be practical. Also, no changes to the data collection process were recommended by the technology supplier representatives. However, 4 recommendations were made to refine the protocols: inclusion of an additional analysis that ignores small (low-density) clot observations in the definition of @entity922 , extension of the time window from 4 to 5 milkings for timely alerts for @entity922 , setting a maximum number of 10 milkings for the time window to detect a @entity922 episode, and presentation of sensitivity for a larger range of false alerts per 1,000 milkings replacing minimum performance targets. The recommended refinements are discussed with suggested changes to the original protocols. The information presented is intended to inform further debate toward achieving international agreement on standard protocols to evaluate performance of in-line @entity1271 -detection systems.

Field validation of protocols developed to evaluate in-line XXXX detection systems.

@entity7018 :: ('102657198', 'Gene') :: ['SCC'] @entity291 :: ('9913', 'Species') :: ['cows'] @entity922 :: ('MESH:D013568', 'Disease') :: ['CM', 'clinical mastitis'] @entity1271 :: ('MESH:D008413', 'Disease') :: ['mastitis']
@entity1271 :: (MESH:D008413,Disease) :: ['mastitis']
