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首页> 外文期刊>Tropical Animal Health and Production >Associations of prepartum body condition score with occurrence of clinical endometritis and resumption of postpartum ovarian activity in dairy cattle.
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Associations of prepartum body condition score with occurrence of clinical endometritis and resumption of postpartum ovarian activity in dairy cattle.

机译：奶牛产前身体状况评分与临床子宫内膜炎的发生和产后卵巢活动恢复的关系。

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摘要

This study was performed to investigate the effect of periparturient body condition score on the occurrence of clinical endometritis and postpartum resumption of ovarian activity in dairy cows. Eighty-seven lactating Holstein cows, fed with a total mixed ration diet, were included into the study. Body condition scoring (using a 5-point scale with quarter-point divisions) was performed by the same investigator using the visual technique every 2 weeks, from 2 weeks before until 6 weeks after calving. Palpation of the reproductive tract and ultrasonographic assessment of ovaries for detection of corpus luteum using a rectal linear probe was also performed at 2, 4, and 6 weeks after calving. Cows with clinical endometritis had significantly lower body condition score (BCS) than normal cows at all weeks pre- and postcalving, and cows that did not ovulate until 45 days after calving had a significantly lower BCS pre- and postpartum. Cows that did not ovulate until 45 days after calving also lost more BCS from 2 weeks before to 4 weeks after calving. Besides, first ovulation after calving take occurred later in cows with clinical endometritis compared to normal cows (P<0.05). In conclusion, low BCS is a risk factor for postpartum endometritis and delayed cyclicity in dairy cows. BCS loss from dry-off to early lactation and occurrence of clinical endometritis can significantly affect postpartum ovarian activity.
机译：进行这项研究以调查围产期身体状况评分对临床奶牛子宫内膜炎发生和产后恢复卵巢活动的影响。该研究纳入了八十七头泌乳荷斯坦奶牛，它们饲喂了全日定量混合饲料。由同一研究者每隔2周使用视觉技术（从产犊前2周到产犊后6周）进行身体状况评分（使用5分制和四分之一分制）。在产犊后的第2、4和6周，还进行了触诊生殖道和使用直肠线性探针对卵巢进行超声检查以检测黄体。在产犊前后，所有患有子宫内膜炎的母牛的身体状况评分（BCS）均比正常母牛低，而在产犊后45天没有排卵的母牛产前和产后BCS明显降低。直到产犊后45天才排卵的母牛从产犊前2周到产后4周也损失了更多的BCS。此外，与正常牛相比，临床子宫内膜炎的牛产犊后先排卵较晚（P <0.05）。总之，低BCS是产后子宫内膜炎和奶牛周期性延迟的危险因素。从干枯到早期泌乳以及临床子宫内膜炎的发生，BCS的丧失会严重影响产后卵巢的活动。

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