| chlamydiosis in a beef herd. | chlamydial infection in a large beef herd is illustrated and discussed. the pre-natal and post-natal losses that occurred during 1972 are highlighted. total pre-natal losses for the nine calving herds comprising 2,915 animals varied between 3,7% and 12,4%. between 1,2% and 11,4% of the calves born alive in the nine herds died before weaning with 70% of the losses occurring within the first three weeks of life. chlamydial organisms were demonstrated in pre-natal and post-natal losses from all nin ... | 1975 | 1195268 |