The effective use of synthetic prostoglandin for the support of manual extraction of retained placenta in cattle | Ucinkovitost uporabe sinteticnih prostaglandinov kot podpore manualnemu luscenju zaostale posteljice pri govedu

Utilizing 1916 cattle and heifers (Simmental, Black and White) from 121 farms, the effects of a synthetic prostaglandin on the treatment of retained placenta were examined over a one-year period. A total of 208 animals with retained placentae were randomly arranged into two groups; an experimental group (105 animals) and a control group (103 animals). In all the animals with retained placentae, the manual extraction was accompanied by both local and parenteral applications of antibiotics within 12-48 hours after parturition. Additionally, the animals of the experimental group received 2 ml of a synthetic prostaglandin F2a analogue (Cloprosin G, Krka, Slovenia). On the 2nd, 16th and 26th days after an extraction, the status of an animal's general health (temperature, pulse, breathing, rumination) and its uterus (size, contractions, openness and shape of the neck of the uterus, secretion) were examined. After an insemination, the following reproductive parameters were analysed: interval from parturition to first heat, first-insemination index, conception level, pregnancy index, postpartum period, service interval, service period and calving interval. Significant increases (P 0.05) in the body temperatures of the experimental group, above 39 °C, were observed 2 days after the extractions. The number of pathological uterine changes was significantly higher (P 0.05) in the experimental group 26 days after the extractions. The general-health status of the animals and the status of their uteri and ovaries did not vary between the groups; nor did most of the reproductive parameters. However, the service and postpartum periods and the calving intervals were significantly (P 0.0001) shorter in the experimental group: 43.40 +/- 54.28 vs. 99.64 +/- 102.19 days; 125.84 +/- 60.78 vs. 188.91 +/- 106.15 days and 410.84 +/- 60.78 vs. 473.91 +/- 106.15 days.