AN EVALUATION OF MILK KETONE TESTS FOR THE PREDICTION OF LEFT DISPLACED ABOMASUMIN DAIRY-COWS

Citation
T. Geishauser et al., AN EVALUATION OF MILK KETONE TESTS FOR THE PREDICTION OF LEFT DISPLACED ABOMASUMIN DAIRY-COWS, Journal of dairy science, 80(12), 1997, pp. 3188-3192
Citations number
25
Journal title
ISSN journal
00220302
Volume
80
Issue
12
Year of publication
1997
Pages
3188 - 3192
Database
ISI
SICI code
0022-0302(1997)80:12<3188:AEOMKT>2.0.ZU;2-3
Abstract
Two commercial milk ketone tests (Ketocheck(TM); Great States, St. Jos eph, MI and Ketolac(R) BHB; Hoechst, Unterschleissheim, Germany) were used with milli; samples collected within 2; wk postpartum to evaluate the use of these tests in the prediction of left displaced abomasum i n dairy cows. Odds ratios, sensitivities, specificities, and likelihoo d ratios were determined. For the study of Ketocheck(TM), 47 milk samp les from 26 cows that were later diagnosed with left displaced abomasu m were taken at a median of 6 d postpartum (12 d prior to diagnosis of the, disease). For the study of Ketolac(R) BHB, 26 milk samples from 15 cows that were later diagnosed with left displaced abomasum were ta ken at a median of 6 d postpartum (11 d prior to diagnosis of the dise ase). Each cow that was subsequently diagnosed with left displaced abo masum was matched with three control cows by herd and calving date. Po sitive Ketocheck(TM) results and Ketolac(R) BHB results that indicated greater than or equal to 100 or greater than or equal to 200 mu mol o f beta-hydroxybutyrate (BHBA)/L of milk were significantly associated with tile subsequent diagnosis of left displaced abomasum. The sensiti vity of Ketocheck(TM) for the prediction of left displaced abomasum wa s 22%; specificity was 96%. The sensitivity of Ketolac(R) BHB for the prediction of left displaced abomasum was 46% when the results indicat ed greater than or equal to 100 mu mol of BHBA/L and was 34% when the results indicated greater than or equal to 200 mu mol of BHBA/L. Ketoc heck(TM) and Ketolac(R) BHB might be used as tests for the prediction of left displaced abomasum when used with milk sampled within 2 wk pos tpartum. Hyperketolactia is a significant risk factor of left displace d abomasum.