Latent class evaluation of a milk test, a urine test, and the fat-to-protein percentage ratio in milk to diagnose ketosis in dairy cows

Journal of Dairy Science

Volumn 94, Issue 5, 2011, Pages 2360-2367

  Krogh, M A ^a   Toft, N ^a   Enevoldsen, C ^a  

^a UNIVERSITY OF COPENHAGEN   (Denmark)

Author keywords

Diagnostic test evaluation; Gold standard; Ketosis; Latent class model

Indexed keywords

3 HYDROXYBUTYRIC ACID; ACETOACETIC ACID DERIVATIVE; MILK PROTEIN;

ANALYTICAL EQUIPMENT; ANIMAL; ANIMAL DISEASE; ARTICLE; CATTLE; CATTLE DISEASE; CHEMISTRY; EVALUATION; FAT INTAKE; FEMALE; KETOACIDOSIS; MILK; SENSITIVITY AND SPECIFICITY; URINE;

3-HYDROXYBUTYRIC ACID; ACETOACETATES; ANIMALS; CATTLE; CATTLE DISEASES; DIETARY FATS; FEMALE; KETOSIS; MILK; MILK PROTEINS; REAGENT KITS, DIAGNOSTIC; SENSITIVITY AND SPECIFICITY;

BOS;

EID: 79955097657     PISSN: 00220302     EISSN: 15253198     Source Type: Journal    
DOI: 10.3168/jds.2010-3816     Document Type: Article

References (23)

1. Branscum A.J., Gardner I.A., Johnson W.O. Estimation of diagnostic-test sensitivity and specificity through Bayesian modeling. Prev. Vet. Med. 2005, 68:145-163.
2. Broster W.H., Broster V.J. Body score of dairy cows. J. Dairy Res. 1998, 65:155-173.
3. Carrier J., Stewart S., Godden S., Fetrow J., Rapnicki P. Evaluation and use of three cowside tests for detection of subclinical ketosis in early postpartum cows. J. Dairy Sci. 2004, 87:3725-3735.
4. Čejna V., Chládek G. The importance of monitoring changes in milk fat to milk protein ratio in Holstein cows during lactation. J. Cent. Eur. Agric. 2005, 6:539-546.
5. Dohoo I.R., Martin S.W. Subclinical ketosis: Prevalence and associations with production and disease. Can. J. Comp. Med. 1984, 48:1-5.
6. Duffield T.F., Kelton D.F., Leslie K.E., Lissemore K.D., Lumsden J.H. Use of test day milk fat and milk protein to detect subclinical ketosis in dairy cattle in Ontario. Can. Vet. J. 1997, 38:713-718.
7. Gardner I.A., Stryhn H., Lind P., Collins M.T. Conditional dependence between tests affects the diagnosis and surveillance of animal diseases. Prev. Vet. Med. 2000, 45:107-122.
8. Geishauser T., Leslie K., Kelton D., Duffield T. Evaluation of five cowside tests for use with milk to detect subclinical ketosis in dairy cows. J. Dairy Sci. 1998, 81:438-443.
9. Geishauser T., Leslie K., Tenhag J., Bashiri A. Evaluation of eight cow-side ketone tests in milk for detection of subclinical ketosis in dairy cows. J. Dairy Sci. 2000, 83:296-299.
10. Hui S.L., Walter S.D. Estimating the error rates of diagnostic tests. Biometrics 1980, 36:167-171.
11. Iwersen M., Falkenberg U., Voigtsberger R., Forderung D., Heuwieser W. Evaluation of an electronic cowside test to detect subclinical ketosis in dairy cows. J. Dairy Sci. 2009, 92:2618-2624. doi: 10.3168/jds.2008-1795.
12. Jeppesen R., Enemark J.M.D., Enevoldsen C. Ketone body measurement in dairy cows. Reference OS43-2 in Proc. 24th World Buiatrics Congress, Nice, France 2006, World Assoc. Buiatrics, Vienna, Austria.
13. Krogh, M. A., and C. Enevoldsen. 2006. Organizational and educational support to dairy herd health programs. Page 133 in Proc. Int. Soc. Vet. Epidemiol. Econ., Queensland, Australia. Accessed Dec. 12, 2008. http://www.sciquest.org.nz/crusher_download.asp%3Farticle=10003577.
14. Nielen M., Aarts M.G.A., Jonkers A.G.M., Wensing T., Schukken Y.H. Evaluation of two cowside tests for the detection of subclinical ketosis in dairy cows. Can. Vet. J. 1994, 35:229-232.
15. Nielsen N.I., Ingvartsen K.L., Larsen T. Diurnal variation and the effect of feed restriction on plasma and milk metabolites in TMR-fed dairy cows. J. Vet. Med. A Physiol. Pathol. Clin. Med. 2003, 50:88-97.
16. Nielsen, S. S., and N. Toft. 2002. Optimisation of the validity of ELISA and faecal culture tests for paratuberculosis: Selection of population or correction by population characteristics? Pages 400-405 in Proc. 7th Int. Colloq. Paratuberculosis, June 11-14, 2002, Bilbao, Spain. International Association for Paratuberculosis, Inc., Madison, WI.
17. OIE. 2010. Principles and methods of validation of diagnostic assays for infectious diseases. Chapter 1.1.4/5. Pages 1-18 in OIE Terrestrial Manual 2010. Accessed March 8, 2011. http://www.oie.int/fileadmin/Home/eng/Health_Standards/tahm/1.1.04_VALID.pdf.
18. Radostits O.M., Gay C.C., Blood D.C., Hinchcliff K.W. Ketosis in ruminants. Veterinary Medicine: A Textbook of the Diseases of Cattle, Sheep, Pigs, Goats and Horses 2000, 1452-1456. Elsevier Health Services. Harcourt Publishers Limited, London, UK. 9th ed. O.M. Radostits, C.C. Gay, D.C. Blood, K.W. Hinchcliff (Eds.).
19. RYK. 2010. Service Technology Health. RYK-Livestock Registration and Milk Recording. Agro Food Park, Udkaersvej 15, DK-8200 Aarhus N, Denmark. Accessed Sep. 11, 2010. http://www.landbrugsinfo.dk/Kvaeg/RYK/Sider/RYKfolder_english.mht.
20. Thomas, A., B. O'Hara, U. Ligges, and S. Sturtz. 2006. Making BUGS open. R News 6/1:12-17. ISSN 1609-3631. Accessed March 8, 2010. http://cran.r-project.org/doc/Rnews/Rnews_2006-1.pdf.
21. Toft N., Åkerstedt J., Tharaldsen J., Hopp P. Evaluation of three serological tests for diagnosis of Maedi-Visna virus infection using latent class analysis. Vet. Microbiol. 2007, 120:77-86.
22. Toft N., Innocent G.T., Gettinby G., Reid S.W.J. Assessing the convergence of Markov Chain Monte Carlo methods: An example from evaluation of diagnostic tests in absence of a gold standard. Prev. Vet. Med. 2007, 79:244-256.
23. Toft N., Jørgensen E., Højsgaard S. Diagnosing diagnostic tests: Evaluating the assumptions underlying the estimation of sensitivity and specificity in the absence of a gold standard. Prev. Vet. Med. 2005, 68:19-33.