| a prospective investigation of bovine leukemia virus infection in young dairy cattle, using survival methods. | the authors studied bovine leukemia virus infection in cattle born between july 1, 1979, and june 30, 1981, and followed up to 27 months in the university of florida dairy research unit herd, a 200-cow milking herd. cattle were tested monthly for antibodies to the virus by agar-gel immunodiffusion with the glycoprotein-51 antigen. of 473 live calves entering the study at birth, 54 became infected during the course of the study. rates of detection of bovine leukemia virus infection were examined ... | 1983 | 6303116 |
| prevalence of bovine leukemia virus infection in florida. | a serologic study was undertaken to determine the prevalence of bovine leukemia virus (blv) infection in dairy and beef cattle in florida. using the agar gel immunodiffusion test with a glycoprotein antigen 47.8% of 7,768 dairy cattle and 6.7% of 4,911 beef cattle were found to have antibodies to blv. the prevalence of blv antibodies increased significantly (p less than 0.0001) with increasing age. after data were adjusted for age, prevalence of blv antibodies was significantly associated with d ... | 1981 | 6281220 |