Identification and control of bovine enzootic leukosis in a dairy herd

Abstract

A clinical case of bovine enzootic leukemia was the start point for other actions of identification and control of the disease in a dairy herd. During three years, five serological tests of agar gel immunodifusion (AGID) test, were carried out to identify the seropositive animals. These animals were eliminated from the herd. Seropositive animals were identified up to the third serological test. In both 4^th and 5^th tests, all animals were seronegatives. This shows that one serological test is not enough for identification of all seropositive animals in the herd. On the other hand, the selective elimination of seropositive animals was adequate procedure to eradicate bovine leukosis from the herd.