RESUMEN
106 cattle with retained placenta were treated either with Vetisept-bolus or Tetran-bolus (controls) after an attempt to remove fetal membranes. Uterine involution judged by rectal palpation on the 28th day was the same in both groups, but more treatments were necessary for cows of the experimental group. Cows treated with Vetisept came in heat nine days earlier than controls (p < 0.05). The pregnancy rate of the controls (91.6%) was better (p < 0.05) than in the experimental group (60.7%). No significant differences between the two groups were encountered for pregnancy index, total index, and service period. Of 82 cows after single calving 50 got pregnant again. In 18 of the remaining cattle another pregnancy was not attempted. The other 14 were bred but did not conceive. Treatment with tetracycline seems to be slightly superior and safer than the treatment with PVP-iodine. It is uncertain, whether the higher (p < 0.05) losses of animals in the experimental group than in the controls is due to the different treatment, for most of the cows had been slaughtered because of insufficient milk production. Therapy with iodine is a recommended alternative to the treatment with tracycline for certain indications.
