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首页> 外文期刊>Revista de salud animal >Evaluation of an electrical conductivity portable device as an alternative for subclinical mastitis detection
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Evaluation of an electrical conductivity portable device as an alternative for subclinical mastitis detection

机译：评估便携式电导率设备作为亚临床乳腺炎检测的替代方法

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摘要

The use of efficient methods for the early diagnosis of subclinical mastitis is of great importance in milk production. By using an electrical conductivity meter (EC), the efficiency of subclinical mastitis diagnosis was evaluated in dairy farms in northern Parana, Brazil, and the results were compared with those obtained by using the California Mastitis Test and the Somatic Cell Count (SCC). Samples from 941 quarters of 259 cows of the Holstein and Jersey breeds were analyzed in four dairy farms between June and July 2014. The EC method correctly evaluated 54.8% of the samples (264 samples with subclinical mastitis) and 250 without infection when compared with the diagnosis by CMT. Of the 445 samples diagnosed as positive by EC, 19.7% were classified by CMT with score 2 and 24.7% with score 3. Of the samples with negative results (496), most of them had scores 0 and 1 (50.4% and 21.4 %). The correlations between EC and SCC (r = 0.14) and EC and CMT (r = 0.17) were positive but low, which generated false positive and false negative results of subclinical mastitis in the herd.
机译：在乳汁生产中，使用有效方法早期诊断亚临床乳腺炎非常重要。通过使用电导率仪（EC），在巴西巴拉那北部的奶牛场评估了亚临床乳腺炎的诊断效率，并将结果与​​通过加利福尼亚乳腺炎测试和体细胞计数（SCC）获得的结果进行了比较。在2014年6月至7月之间，对四个奶牛场的259头Holstein和Jersey奶牛的941个季度的样本进行了分析。EC方法正确评估了54.8％的样本（264个亚临床乳腺炎样本）和250。通过CMT诊断。在445例经EC鉴定为阳性的样本中，CMT将19.7％的样本分为2级，将3分为24.7％。在阴性结果的样本中（496），大多数样本的分数为0和1（50.4％和21.4％） ）。 EC与SCC之间的相关性（r = 0.14）和EC与CMT之间的相关性（r = 0.17）呈正相关，但相关性较低，从而在猪群中产生亚临床乳腺炎的假阳性和假阴性结果。

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