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首页> 外文期刊>Tropical Animal Health and Production >Subclinical endometritis in Zebu x Friesian crossbred dairy cows: its risk factors, association with subclinical mastitis and effect on reproductive performance
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Subclinical endometritis in Zebu x Friesian crossbred dairy cows: its risk factors, association with subclinical mastitis and effect on reproductive performance

机译：Zebu x Friesian杂交奶牛的亚临床子宫内膜炎：其危险因素，与亚临床乳腺炎的关系以及对生殖性能的影响

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A study was carried out on 59 clinically healthy Zebu x Friesian crossbred cows to determine the prevalence of subclinical endometritis, associated factors and its effect on the reproductive performance. Subclinical endometritis was diagnosed by endometrial cytology using uterine lavege technique and subclinical mastitis using CMT. The clinical, management and reproductive data were obtained from a weekly follow up visit of each cow for a period of 6 months after calving. The prevalence of subclinical endometritis, with ≥5% neutrophil count, was 47.5% and 30.5% at week 4 and 8, significantly decreasing (P = 0.002) as postpartum period advanced. Body condition score at week 4 postpartum (OR = 4.5, P = 0.017) and regular cow exercise (OR = 4.8, P = 0.026) were the significant risk factors while post-calving hygiene (P = 0.06) was poorly associated. Subclinical endometritis was also directly associated with subclinical mastitis at both week 4 (OR = 4.5, P = 0.012) and 8 (OR = 3.6, P = 0.031) postpartum. The risk of first service pregnancy (OR = 5.1, P = 0.004) was higher in cows negative for subclinical endometritis at week 8 postpartum and the proportion of cows that required more than 3 services was higher in cows with uterine inflammation. Also the proportion of cows diagnosed pregnant within 180 DIM was higher in cows with normal uterus at both week 4 (OR = 10.3, P = 0.001) and week 8(OR = 21.8, P = 0.001). These results indicated that subclinical endometritis was directly associated with poor body condition and subclinical mastitis and that it had negative effect on reproductive traits of dairy cows. This association may also reflect the possibility of translocation of bacteria/bacterial products from the uterus to the udder or vic-versa or else the presence of common cause for both endometritis and mastitis. Keywords Cows - Endometritis - Mastitis - Reproduction - Subclinical
机译：对59例临床健康的Zebu x Friesian杂交母牛进行了研究，以确定亚临床子宫内膜炎的患病率，相关因素及其对生殖性能的影响。使用子宫灌洗技术通过子宫内膜细胞学诊断亚临床子宫内膜炎，使用CMT通过亚临床乳腺炎诊断。从产犊后的6个月内每周对每头母牛进行随访，获得临床，管理和生殖数据。中性粒细胞计数≥5％的亚临床子宫内膜炎的患病率在产后4周和8周分别为47.5％和30.5％，显着降低（P = 0.002）。产后第4周的身体状况评分（OR = 4.5，P = 0.017）和定期的牛运动（OR = 4.8，P = 0.026）是重要的危险因素，而产犊后的卫生状况（P = 0.06）相关性很差。亚临床子宫内膜炎在产后第4周（OR = 4.5，P = 0.012）和第8周（OR = 3.6，P = 0.031）也直接与亚临床乳腺炎相关。产后第8周，亚临床子宫内膜炎阴性的母牛初次妊娠的风险较高（OR = 5.1，P = 0.004），子宫炎症母牛需要3次以上妊娠的母牛比例更高。在第4周（OR = 10.3，P = 0.001）和第8周（OR = 21.8，P = 0.001），子宫正常的母牛在180 DIM内被诊断出怀孕的母牛比例也更高。这些结果表明亚临床子宫内膜炎与身体状况不佳和亚临床乳腺炎直接相关，并且对奶牛的生殖特性有负面影响。这种联系也可能反映出细菌/细菌产物从子宫转移到乳房或从子宫转移的可能性，或者同时存在子宫内膜炎和乳腺炎的共同原因。关键词母牛-子宫内膜炎-乳腺炎-生殖-亚临床

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