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首页> 外文期刊>Tropical Animal Health and Production >Incidence of subclinical endometritis and its effects on reproductive performance of crossbred dairy cows
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Incidence of subclinical endometritis and its effects on reproductive performance of crossbred dairy cows

机译：亚临床子宫内膜炎的发生率及其对杂交奶牛繁殖性能的影响

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摘要

In dairy cattle, uterine infections are not life threatening and often unavoidable; however, they reduce fertility and increase the production costs of properties. The aim of this study was to evaluate the incidence of subclinical endometritis from 32 to 70 days in milk (DIM) and its effects on the reproductive performance of crossbred dairy cows. Lactating cows (Holstein/Gir; n = 172), with no history of retained placenta, without clinical signs of uterine infection were used. The body condition score (BCS) was evaluated on a scale from 1 to 5. Ultrasound examination was performed to evaluate uterine lining and ovarian activity, while vaginal mucus was analyzed by gloved hand. The diagnosis of subclinical endometritis was performed by endometrial cytobrush technique. The samples were collected, stained, and examined microscopically; positive cases for subclinical endometritis were considered with the presence of a parts per thousand yen5 % of neutrophils. Later, the cows were submitted to conventional artificial insemination or timed artificial insemination. The incidence of subclinical endometritis in the herd was 26 %, and this was not affected by the season of calving, presence of corpus luteum, DIM, and parity. Cows with a BCS a parts per thousand currency sign2.50 had a higher incidence of subclinical endometritis. The conception rate to first insemination and pregnancy rate at 150 days postpartum were not influenced by the presence of subclinical endometritis in crossbred dairy cows.
机译：在奶牛中，子宫感染不会威胁生命，通常是不可避免的。但是，它们降低了生育能力并增加了物业的生产成本。这项研究的目的是评估32到70天牛奶（DIM）中亚临床子宫内膜炎的发生率及其对杂交奶牛繁殖性能的影响。使用无胎盘保留病史，无子宫感染临床症状的泌乳母牛（Holstein / Gir; n = 172）。身体状况评分（BCS）的评分范围为1到5。进行超声波检查以评估子宫内膜和卵巢活动，同时用手套手对阴道粘液进行分析。亚临床子宫内膜炎的诊断是通过子宫内膜细胞刷技术进行的。收集样品，染色，并进行显微镜检查;考虑亚临床子宫内膜炎的阳性病例，每千日元中有5％的嗜中性白细胞。后来，母牛接受了常规的人工授精或定时人工授精。牛群中亚临床子宫内膜炎的发生率为26％，并且不受产犊季节，黄体的存在，DIM和胎次的影响。 BCS分数为千分之2.50的奶牛的亚临床子宫内膜炎发生率较高。杂交奶牛中亚临床子宫内膜炎的存在对初次受精的受胎率和产后150天的受孕率没有影响。

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