Levantamento brucélico da bacia leiteira de Goiânia ring-test

Abstract

1346 milk samples from 960 farms, which provide milk for Goiânia, have been analysed during the dry season, and 2548 samples from 1186 farms, during the rainy season, by the Ring -Test. The statistic analysis of the Brucellosis rate results found during the two periods have shown a significant diference between them. The bibliographic revision has not presented any reference to results gotten by the Ring -Test which might enable the presen­tation oi significant differences between the dry and rainy seasons. These results can be interpreted under two points of víew: 1st. -The introduction of new milk productor animais, which have not been employed for this purpose during the rainy season. This is due to severa[ economic factors which lead the milk furnishers to this procedure. 2nd. -Experimental errors inherent to the colection and examination methods due to changes ln procedure during the work, as well as errors in the analysls method employed, caused by the condictions mentioned under the 1 st item.