Risk factors of clinical endometritis in an Iranian dairy farm
DOI:
https://doi.org/10.5380/avs.v29i2.93271Palavras-chave:
Dairy cattle, clinical endometritis, risk factors, reproductive performanceResumo
Clinical endometritis is one of the most common causes of declining reproductive performance in dairy cows. The purpose of this study was to investigate the effects of some factors including cow’s parity, milk yield, dystocia, retained placenta, calf sex, calving season, abortion, and stillbirth on the incidence of clinical endometritis and the effect of clinical endometritis on open days in an Iranian dairy farm. Uterine health of 557 dairy cows was evaluated by rectal palpation and ultrasonography during 30-35 days after calving. The presence of mucopurulent secretions in the vagina and vulva as well as the ultrasonographic observation of echogenic secretions in the uterine lumen were considered endometritis. The effect of the mentioned factors on the incidence of clinical endometritis was then analyzed in univariate and multivariate logistic regression models. The chance of developing clinical endometritis in the low-producing cows was 27.2% higher than that of the high-producing cows (p=0.06). Other parameters had no significant effect on the incidence of endometritis. The incidence of clinical endometritis in the studied herd was 49.5%. Based on the results of this study, the low milk yield may be a risk factor for developing clinical endometritis in the studied herd's condition, while parameters of the parity, dystocia, retained placenta, calf sex, calving season, abortion, and stillbirth was not effective in the occurrence rate of endometritis. There was no association between clinical endometritis and days open in the studied herd.
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