Evaluación del efecto del lugar de inoculación en los resultados de la prueba de intradermotuberculinización en ganado caprino
Jose Sánchez Cesteros defended this Degree Final Project
October 15th, 2020
The place of inoculation is related to the sensitivity of intradermal tuberculin test in cattle, so much so, that the legislation and procedure manuals strictly specify that it should be carried out at half height in the limit between the anterior and the middle third of the neck. However, the usual practice in goats is to use the scapula zone as indicated by some specific goat tuberculosis programmes. The effect of the inoculation place in the intradermal test has been studied by comparing the increase in skin-fold thickness, the number of test reactors and the detection of clinical signs in a population of 190 goats, belonging to two infected herds with different prevalence of tuberculosis. Quantitative differences in reactions to tuberculin were observed, but they were not related to the qualitative outcome of the test. There was a significant difference in the number of reactors in the IDTB test compared to the standard interpretation in one of the herds and the detection of clinical signs was also higher in the location of the neck (McNemar`s test, p < 0.01, p < 0.01). The results provide preliminary evidence that it is possible to obtain greater sensitivity in the IDTB test using neck location in goats
