Application of ROC curve analysis to FAMACHA© evaluation of haemonchosis on two sheep farms in South Africa

Veterinary Parasitology

Volumn 177, Issue 3-4, 2011, Pages 224-230

  Reynecke, D P ^a,b   Van Wyk, J A ^a   Gummow, B ^a,c   Dorny, P ^d   Boomker, J ^a  

^a UNIVERSITY OF PRETORIA   (South Africa)

^b AGRESEARCH GRASSLANDS   (New Zealand)

^c JAMES COOK UNIVERSITY   (Australia)

^d INSTITUTE OF TROPICAL MEDICINE   (Belgium)

Author keywords

Haemonchus; Integrated parasite management; Receiver Operating Characteristic; Sheep; Targeted selective treatment

Indexed keywords

ANIMAL HUSBANDRY; AREA UNDER THE CURVE; ARTICLE; COMPUTER PROGRAM; CONTROLLED STUDY; DIAGNOSTIC ACCURACY; HAEMONCHOSIS; HEMATOCRIT; NONHUMAN; PROCESS OPTIMIZATION; RECEIVER OPERATING CHARACTERISTIC; SENSITIVITY AND SPECIFICITY; SHEEP FARMING; SOUTH AFRICA; WORM EGG;

ANEMIA; ANIMALS; ANTHELMINTICS; FEMALE; GASTROINTESTINAL DISEASES; HAEMONCHIASIS; HAEMONCHUS; HEMATOCRIT; MALE; ROC CURVE; SHEEP; SHEEP DISEASES; SOUTH AFRICA;

HAEMONCHUS; OVIS ARIES;

EID: 79954602545     PISSN: 03044017     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.vetpar.2010.12.030     Document Type: Article

References (25)

1. Bath, G.F., Hansen, J.W., Krecek, R.C., Van Wyk, J.A., Vatta, A.F., 2001. Sustainable approaches for managing haemonchosis in sheep and goats. Food and Agriculture Organization Animal Production and Health: Technical Co-operation Project No. TCP/SAF/8821.(A).
2. Beck R., Gašpar A., Mihaljević Ž., Marinculić A., Stojčević D., Brstilo M. Evaluation of ELISA for detection of Trichinella antibodies in muscle juice samples of naturally infected pigs. Vet. Parasitol. 2005, 132:91-95.
3. Gordon, H.McL., 1981. Epidemiology of helminthosis of sheep: diagnosis. Refresher course for veterinarians. Proceedings no. 58. Refresher course for sheep. University of Sydney (The Post-Graduate Committee in Veterinary Science), pp. 607-615.
4. Greiner M., Gardner I.A. Epidemiologic issues in the validation of veterinary diagnostic tests. Prev. Vet. Med. 2000, 45:3-22.
5. Greiner M., Sohr D., Gobel P. A modified ROC analysis for the selection of cut-off values and the definition of intermediate results of serodiagnostic tests. J. Immunol. Methods 1995, 185:123-132.
6. Hanley J.A., McNeil B.J. The meaning and use of the area under a Receiver Operating Characteristic (ROC) curve. Radiology 1982, 143:29-36.
7. Kaplan R.M., Burke J.M., Terrill T.H., Miller J.E., Getz W.R., Mobini S., Valencia E., Williams M.J., Williamson L.H., Larsen M., Vatta A.F. Validation of the FAMACHA© eye color chart for detecting clinical anemia in sheep and goats on farms in the southern United States. Vet. Parasitol. 2004, 123:105-120.
8. Kenyon F., Greer A.W., Coles G.C., Cringoli G., Papadopoulos E., Cabaret J., Berrag B., Varady M., Van Wyk J.A., Thomas E., Vercruysse J., Jackson F. The role of targeted selective treatments in the development of refugia-based approaches to the control of gastrointestinal nematodes of small ruminants. Vet. Parasitol. 2009, 164:3-11.
9. Mahieu M., Arquet R., Kandassamy T., Mandonnet N., Hoste H. Evaluation of targeted drenching using FAMACHA© method in Creole goat: reduction of anthelmintic use, and effects on kid production and pasture contamination. Vet. Parasitol. 2007, 146:135-147.
10. Malan F.S., Van Wyk J.A., Wessels C.D. Clinical evaluation of anaemia in sheep: early trials. Onderstepoort J. Vet. Res. 2001, 68:165-174.
11. Martin P.J. Selection for thiabendazole resistance in Ostertagia spp. by low efficiency anthelmintic treatment. Int. J. Parasitol. 1989, 19:317-325.
12. Molento M.B., Gavião A.A., Depner R.A., Pires C.C. Frequency of treatment and production performance using the FAMACHA method compared with preventive control in ewes. Vet. Parasitol. 2009, 162:314-319.
13. Molento M.B., Tasca C., Gallo A., Ferreira M., Bononi R., Stecca E. Método Famacha como parametro clínico individual de infecção por Haemonchus contortus em pequenos ruminantes./FAMACHA guide as an individual clinic parameter for Haemonchus contortus infection in small ruminants. Cienc. Rural 2004, 34:1139-1145.
14. Reinecke, R.K., 1973. The larval anthelmintic test in ruminants. Technical Communication No.106, Department of Agricultural Technical Services, Republic of South Africa, 20 pp.
15. Reynecke D.P., Van Wyk J.A., Gummow B., Dorny P., Boomker J. Validation of the FAMACHA© eye colour chart using Se/Sp analysis on two South African commercial sheep farms. Vet. Parasitol. 2010, 10.1016/j.vetpar.2009.08.023.
16. Riley D.G., Van Wyk J.A. Genetic parameters for FAMACHA© score and related traits for host resistance/resilience and production at differing severities of worm challenge in a Merino flock in South Africa. Vet. Parasitol. 2009, 164:44-52.
17. Smith R.D. Veterinary Clinical Epidemiology. A Problem Oriented Approach 1995, CRC Press, pp. 38-39. 2nd Edition.
18. Sotomaior C., Milczewski V., Schwartz M.G., Rosalinski-Moraes F. Evaluation of FAMACHA system: accuracy of anaemia estimation and use of the method on commercial sheep flocks. V International Seminar in Animal Parasitology, Merida, Mexico 2003, 61-66.
19. Swets J.A. Measuring the accuracy of diagnostic systems. Science 1988, 240:1285-1293.
20. Van Wyk J.A. Refugia-overlooked as perhaps the most potent factor concerning the development of anthelmintic resistance. Onderstepoort J. Vet. Res. 2001, 68:55-67.
21. Van Wyk J.A. Production trials involving use of the FAMACHA© system for haemonchosis in sheep: preliminary results. Onderstepoort J. Vet. Res. 2008, 75:331-345.
22. Van Wyk J.A., Bath G.F. The FAMACHA© system for managing haemonchosis in sheep and goats by clinically identifying individual animals for treatment. Vet. Res. 2002, 33:509-529.
23. Van Wyk J.A., Bath G.F., Groeneveld H.T., Stenson M.O., Malan F.S. Extensive testing of the FAMACHA© system for accuracy of clinical evaluation of anaemia caused by ovine haemonchosis. Proc. 5th Internat. Sheep Vet. Congr., South Africa 2001, (CD, thus no page numbers).
24. Vatta A.F., Letty B.A., Van der Linde M.J., Van Wijk E.F., Hansen J.W., Krecek R.C. Testing for clinical anemia caused by Haemonchus spp. in goats farmed under resource-poor conditions in South Africa using an eye color chart used for sheep. Vet. Parasitol 2001, 99:1-14.
25. Zweig M.H., Campbell G. Receiver-Operating Characteristic (ROC) plots: a fundamental evaluation tool in clinical medicine. Clin. Chem. 1993, 39:561-577.