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Field trial on the post-insemination intrauterine treatment of dairy cows with mild endometritis with cephapirin
Theriogenology ( IF 2.4 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.theriogenology.2020.06.024
Roland Schlegl 1 , Marc Drillich 1 , Panagiotis Ballas 2 , Ulrike Reinländer 1 , Michael Iwersen 1 , Walter Baumgartner 3 , Monika Ehling-Schulz 4 , Karen Wagener 1
Affiliation  

Cows in estrus but with signs of clinical endometritis (CE) are often not inseminated or undergo an intrauterine treatment after artificial insemination (AI). Decades ago, the so-called Aström method was described as intrauterine infusion of iodine-potassium solution 2-4 days after AI. Nowadays, it is common to use antibiotics instead of iodine solution and the treatment is performed only a few hours after AI. Although widespread in practice, there is only little information about the efficacy of this treatment. Thus, this study evaluated the effect of a post-breeding intrauterine treatment with cephapirin on insemination success in cows with signs of mild CE. In total, 281 cows subjected to an Ovsynch program with fixed-time AI and examined for vaginal discharge straight after AI by use of the Metricheck device were included. Cows with cloudy discharge or flecks of pus in the mucus were assigned to a treatment or a control group. The treatment group (MET; n = 87) received 6 ± 1 h after AI an intrauterine treatment with 500 mg of cephapirin (Metricure, Intervet Deutschland GmbH). Control cows (CON; n = 91) remained untreated. Animals with clear discharge were assigned to a healthy comparison group (HE; n = 103). Pregnancy diagnosis was performed 39 days after AI. The proportion of pregnant cows after the AI directly preceding the enrollment did not differ significantly (P > 0.05) between HE (35.0%), CON (27.5%) and MET (32.2%). Cephapirin treatment had also no positive effect on other reproductive performance measures, i.e, the percentage of pregnant cows 200 days after enrollment (HE: 64.1%, CON: 73.6%, and MET: 73.6%) or the mean interval from enrollment to conception (HE: 25.4 days, CON: 30.0 days, and MET: 29.7 days). The binary logistic regression showed that the only risk factors with a detrimental effect on fertility were a history of CE 28-34 days postpartum and season. Although cows in MET and HE were 1.74 and 1.37 times more likely to conceive after AI than CON, this effect was not significant. Uterine sampling of a subset of cows with CE (n = 50) revealed 127 bacterial isolates. The most frequently found genera were Staphylococcus (19.7%), Bacillus (12.6%), Streptococcus (10.2%), Corynebacterium (8.7%), and Lysinibacillus (7.9%). The finding that common uterine pathogenic bacteria were rarely detected additionally questions an intrauterine antibiotic treatment of cows with mild CE at AI.

中文翻译:

头孢匹林治疗轻度子宫内膜炎奶牛授精后宫内治疗的田间试验

处于发情期但有临床子宫内膜炎 (CE) 体征的奶牛在人工授精 (AI) 后通常不进行授精或接受宫内治疗。几十年前,所谓的 Aström 方法被描述为在 AI 后 2-4 天宫内输注碘钾溶液。如今,通常使用抗生素代替碘溶液,并且仅在 AI 后几个小时进行治疗。尽管在实践中很普遍,但关于这种治疗效果的信息很少。因此,本研究评估了用头孢匹林进行配种后宫内治疗对有轻度 CE 迹象的奶牛受精成功的影响。总共有 281 头奶牛接受了具有固定时间 AI 的 Ovsynch 程序,并在 AI 后立即使用 Metricheck 设备检查阴道分泌物。有混浊分泌物或粘液中有脓斑点的奶牛被分配到治疗组或对照组。治疗组(MET;n = 87)在 AI 后 6 ± 1 小时接受 500 mg 头孢匹林(Metricure,Intervet Deutschland GmbH)的宫内治疗。对照奶牛(CON;n = 91)保持未治疗。出院清晰的动物被分配到健康对照组(HE;n = 103)。AI 后 39 天进行妊娠诊断。HE(35.0%)、CON(27.5%)和MET(32.2%)之间在入组前直接接受AI后怀孕奶牛的比例没有显着差异(P > 0.05)。头孢匹林治疗对其他繁殖性能指标也没有积极影响,即入组后 200 天怀孕奶牛的百分比(HE:64.1%,CON:73.6%,MET:73。6%)或从登记到受孕的平均间隔(HE:25.4 天,CON:30.0 天,MET:29.7 天)。二元逻辑回归表明,对生育能力有不利影响的唯一危险因素是产后 28-34 天和季节的 CE 病史。尽管 MET 和 HE 中的奶牛在 AI 后受孕的可能性是 CON 的 1.74 倍和 1.37 倍,但这种影响并不显着。对有 CE 的奶牛子集(n = 50)进行的子宫取样揭示了 127 种细菌分离物。最常见的属是葡萄球菌属(19.7%)、芽孢杆菌属(12.6%)、链球菌属(10.2%)、棒状杆菌属(8.7%)和赖氨酸杆菌属(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。二元逻辑回归表明,对生育能力有不利影响的唯一危险因素是产后 28-34 天和季节的 CE 病史。尽管 MET 和 HE 中的奶牛在 AI 后受孕的可能性是 CON 的 1.74 倍和 1.37 倍,但这种影响并不显着。对有 CE 的奶牛子集(n = 50)进行的子宫取样揭示了 127 种细菌分离物。最常见的属是葡萄球菌属(19.7%)、芽孢杆菌属(12.6%)、链球菌属(10.2%)、棒状杆菌属(8.7%)和赖氨酸杆菌属(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。二元逻辑回归表明,对生育能力有不利影响的唯一危险因素是产后 28-34 天和季节的 CE 病史。尽管 MET 和 HE 中的奶牛在 AI 后受孕的可能性是 CON 的 1.74 倍和 1.37 倍,但这种影响并不显着。对有 CE 的奶牛子集(n = 50)进行的子宫取样揭示了 127 种细菌分离物。最常见的属是葡萄球菌属(19.7%)、芽孢杆菌属(12.6%)、链球菌属(10.2%)、棒状杆菌属(8.7%)和赖氨酸杆菌属(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。尽管 MET 和 HE 中的奶牛在 AI 后受孕的可能性是 CON 的 1.74 倍和 1.37 倍,但这种影响并不显着。对有 CE 的奶牛子集(n = 50)进行的子宫取样揭示了 127 种细菌分离物。最常见的属是葡萄球菌属(19.7%)、芽孢杆菌属(12.6%)、链球菌属(10.2%)、棒状杆菌属(8.7%)和赖氨酸杆菌属(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。尽管 MET 和 HE 中的奶牛在 AI 后受孕的可能性是 CON 的 1.74 倍和 1.37 倍,但这种影响并不显着。对有 CE 的奶牛子集(n = 50)进行的子宫取样揭示了 127 种细菌分离物。最常见的属是葡萄球菌属(19.7%)、芽孢杆菌属(12.6%)、链球菌属(10.2%)、棒状杆菌属(8.7%)和赖氨酸杆菌属(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。和赖氨酸杆菌(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。和赖氨酸杆菌(7.9%)。很少检测到常见的子宫致病菌这一发现进一步质疑了在 AI 时对具有轻度 CE 的奶牛进行宫内抗生素治疗的问题。
更新日期:2020-10-01
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