This study evaluated the relationships of postpartum uterine disease, parity and body condition score (BCS) to uterine score and their influence on pregnancy per artificial insemination (P/AI) at the first postpartum service of crossbred dairy cows. A total of 588 Holstein × Gir dairy cows from 20 farms were monitored during the first 35 days postpartum to diagnose retained placenta, metritis and clinical endometritis. Cows were subjected to timed AI after the end of the voluntary waiting period. Uterine scores were evaluated at the time of the timed AI, between 35 and 65 days postpartum, and cows were grouped according to uterine size and position: small uterus in the pelvic cavity (SPS1), medium uterus in the transition between the pelvic and abdominal cavities (SPS2) and large uterus within the abdominal cavity (SPS3). The uterine score was related to occurrence of postpartum uterine disease, number of cases, parity, and BCS (P<0.01). P/AI in SPS1 cows (30.03%) tended to be higher (P=0.09) than those in SPS2 and SPS3 cows together (23.67%). In conclusion, postpartum uterine disease occurrence, parity and BCS were thus related to uterine size and position score, and lactating cows with a smaller uterus located in the pelvic cavity tended to have better P/AI at the first postpartum service.

这项研究评估了杂交乳牛首次产后服务时，产后子宫疾病，胎次和身体状况评分（BCS）与子宫评分之间的关​​系，以及它们对人工授精（P / AI）妊娠的影响。在产后前35天对来自20个农场的588头Holstein×Gir奶牛进行了监测，以诊断残留的胎盘，子宫炎和临床子宫内膜炎。在自愿等待期结束后，对母牛进行定时AI。在定时AI时，在产后35至65天之间评估子宫评分，并根据子宫大小和位置将母牛分组：骨盆腔中的小子宫（SPS1），骨盆和腹部之间的过渡中的子宫腔（SPS2）和腹腔内的大子宫（SPS3）。P <0.01）。P / AI中SPS1奶牛（30.03％）趋于更高（P比在SPS2 SPS3和奶牛一起（23.67％）= 0.09）。总之，产后子宫疾病的发生，胎次和BCS与子宫的大小和位置评分有关，子宫较小的泌乳母牛位于盆腔时，在产后的第一天往往具有较好的P / AI。