Treatment of cows with clinical endometritis Ⅲ as cows affected by pyometra-Non antibiotic treatment of severe clinical endometritis

摘要

Objective: To confirm the efficacy of non-antibiotic treatment with prostaglandin F2α(PGF2α) in dairy cows affected by severe clinical endometritis in (30±3) days in milk. Methods: Cows with clinical endometritis Ⅲ (n=399) were aligned into three groups randomly. The first group (n=115) received PGF2α, the second group (n=84) received intrauterine infusion (IUI) of oxytetracycline 10％ + PGF2α, and the third group (n=200) received IUI. Cows were inseminated following estrus. The pregnancy status, parity, calving and artificial insemination season, ovaries with corpus luteum at the time of treatment, dystocia, body condition score and treatment groups were included in data analysis. Results: Total pregnancy rate was 40.1％ after the first insemination and 94.2％ after the third insemination. Overall pregnancy rate of treated cows with IUI+PGF2α(84.5％) was significantly lower than the treated cows with PGF2α(98.3％) or IUI (96％) (P<0.05). The first service pregnancy rate of inseminated cows in summer (14.3％) was lower in comparison with cows inseminated in spring (40.4％), fall (41.4％) and winter (51.7％) (P<0.05). Conclusions: PGF2α could treat severe clinical endometritis in dairy cows with corpus luteum in comparison with other treatments.