Article(id=1307007696352342756, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307007396681900041, articleNumber=null, orderNo=null, doi=10.11843/j.issn.0366-6964.2026.01.048, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1733846400000, receivedDateStr=2024-12-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1789544517839, onlineDateStr=2026-09-16, pubDate=1769097600000, pubDateStr=2026-01-23, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789544517839, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789544517839, creator=13701087609, updateTime=1789544517839, updator=13701087609, issue=Issue{id=1307007396681900041, tenantId=1146029695717560320, journalId=1306274286668972124, year='2026', volume='57', issue='1', pageStart='1', pageEnd='568', issueExtLink='null', onlineDate='null', pubDate='1769097600000', pubDateStr='2026-01-23', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789544446392, creator='13701087609', updateTime=1789609890784, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307281890638057732, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307007396681900041, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307281890738721029, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307007396681900041, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=553, endPage=563, ext={EN=ArticleExt(id=1307007696696275685, articleId=1307007696352342756, tenantId=1146029695717560320, journalId=1306274286668972124, language=EN, title=A Preliminary Study on the Early Warning Model of Postpartum Metritis in Dairy Cows based on Electronic Nose Detection, columnId=1307007468660355587, journalTitle=Acta Veterinaria et Zootechnica Sinica, columnName=CLINICAL VETERINARY MEDICINE, runingTitle=null, highlight=null, articleAbstract=
The aim of this study was to evaluate the accuracy of the early warning model for metritis in dairy cows established by electronic nose detection. The detection of volatile organic compounds (VOCs) in feces and blood samples of 50 healthy dairy cows and 22 metritis cows before onset by electronic nose, preliminary analysis of data by orthogonal partial least squares discriminant analysis (OPLS-DA) model. The training set and test set were divided according to 7∶3, the early warning model was established and the performance of the electronic nose in predicting metritis was evaluated. The results showed that, the feces and blood of healthy and metritis dairy cows were clearly distinguished and clustered respectively. In this study feces are the best sample source for establishing an early warning model. Five different machine learning algorithms, namely decision tree (DT), random forest (RF), K-nearest neighbors (KNN), eXtreme gradient boosting (XGBoost), and linear discriminant analysis (LDA), were used to build models. Predictive efficiency is analyzed in conjunction with model evaluation metrics and receiver operating characteristic curves (ROC). It was found that the test set accuracy (ACC) reached 0.88、0.96、0.88、0.91、0.98. Area under curve (AUC) was 0.86、0.98、0.95、0.98 and 1.00. As a result, the RF and LDA models perform the best in terms of predictive performance. The electronic nose has a high accuracy in predicting the occurrence of uterine infections. In conclusion, the detection of fecal VOCs of dairy cows before onset by electronic nose can achieve the purpose of early warning of metritis inflammation and has a great application prospect in the early diagnosis of dairy cow diseases.
, authors=Fang WANG
1, 2, Huasheng GANG
1, 2, Rong ZHANG
1, 2, Hongwei DUAN
1, 2, Junjie HU
1, 2, authorsList=Fang WANG, Huasheng GANG, Rong ZHANG, Hongwei DUAN, Junjie HU, authorCompany=null, correspAuthors=Junjie HU, authorNote=null, correspAuthorsNote=
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1307007698000704240, articleId=1307007696352342756, tenantId=1146029695717560320, journalId=1306274286668972124, language=CN, title=基于电子鼻检测的奶牛产后子宫炎早期预警模型初步研究, columnId=1307007468815544837, journalTitle=畜牧兽医学报, columnName=临床兽医, runingTitle=null, highlight=null, articleAbstract=
旨在评估电子鼻检测奶牛粪便建立的子宫炎预警模型准确性。本研究使用电子鼻检测50头健康和22头子宫炎奶牛发病前粪便以及血液样本挥发性有机化合物(volatile organic compounds,VOCs),正交偏最小二乘判别分析(orthogonal partial least squares discriminant analysis,OPLS-DA)模型初步分析数据。按7∶3划分训练集和测试集,建立预警模型并评估电子鼻预测子宫炎的性能。结果发现,健康和子宫炎奶牛发病前的粪便以及血液明显区分并各自聚类,在本研究中粪便是建立预警模型的最佳样本来源。选择决策树(Decision Tree,DT)、随机森林(Random Forest,RF)、K-邻近算法(K-Nearest Neighbors,KNN)、梯度提升(eXtreme Gradient Boosting,XGBoost)和线性判别分析(Linear Discriminant Analysis,LDA)5种不同的机器学习算法建立模型,结合模型评估指标和受试者特征(Receiver Operating Characteristic,ROC)曲线分析预测效率。研究发现测试集准确率(Accuracy,ACC)分别达到0.88、0.96、0.88、0.91、0.98,曲线下面积(Area Under Curve,AUC)分别是0.86、0.98、0.95、0.98、1.00。因此,RF和LDA模型预测性能表现最佳,电子鼻预测子宫炎的发生具有较高的准确性。综上,电子鼻检测奶牛发病前粪便VOCs能达到预警子宫炎的目的,在奶牛疾病的预警诊断中有很大的应用前景。
, authors=王芳
1, 2, 刚华晟
1, 2, 张榕
1, 2, 段宏伟
1, 2, 胡俊杰
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王芳,硕士,主要从事奶牛围产期疾病研究,E-mail:18719806885@163.com
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1.甘肃农业大学动物医学院,兰州 730070
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1.甘肃农业大学动物医学院,兰州 730070)]), AuthorCompany(id=1307286669980365097, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, xref=2., ext=[AuthorCompanyExt(id=1307286669988753706, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, companyId=1307286669980365097, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Gansu Key Laboratory of Animal Generational Physiology and Reproductive Regulation,Lanzhou 730070,China), AuthorCompanyExt(id=1307286669997142315, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, companyId=1307286669980365097, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.甘肃省动物生殖生理与繁殖调控重点实验室,兰州 730070)])], figs=[ArticleFig(id=1307286674812203346, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=EN, label=Fig.1, caption=
Statistical analysis of VOCs data from blood samplesMET. Metritis; H. Health; PM: Primiparous metritis; MM. Multiparous metritis. ns. P>0.05, *. P<0.05, **. P<0.01, ***. P<0.001, the same as below
A. Differential analysis of electronic nose sensor; B. 2D result diagram of OPLS-DA model; C. Results of the 200 permutation test for the OPLS-DA model; D. OPLS-DA model 2-dimensional result plots for classification of uteritis samples
, figureFileSmall=HL2gA3WP4WSt5BdZnTRFiA==, figureFileBig=poIbm1EPH77W1NKskEyuAQ==, tableContent=null), ArticleFig(id=1307286674875117907, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=CN, label=图1, caption=
血液样本VOCs数据统计分析MET.子宫炎;H.健康;PM.初产子宫炎;MM.经产子宫炎。ns. P>0.05,*. P<0.05,**. P<0.01,***. P<0.001,下同
A.电子鼻传感器差异性分析;B.OPLS-DA模型2维结果图;C.OPLS-DA模型的200次置换检验结果;D.子宫炎样本分类的OPLS-DA模型2维结果图
, figureFileSmall=HL2gA3WP4WSt5BdZnTRFiA==, figureFileBig=poIbm1EPH77W1NKskEyuAQ==, tableContent=null), ArticleFig(id=1307286674967392596, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=EN, label=Fig.2, caption=
Statistical analysis of VOCs data from fecal samplesA. Difference analysis of electronic nose sensor; B. 2D result diagram of OPLS-DA model; C. Results of the 200 permutation test for the OPLS-DA model
, figureFileSmall=3cHE4JpjYDNrUNsEM+zl8w==, figureFileBig=v3bmQ8e4VJj1yZeQQuwAcw==, tableContent=null), ArticleFig(id=1307286675047084373, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=CN, label=图2, caption=
粪便样本VOCs数据统计分析A.电子鼻传感器差异性分析;B.OPLS-DA模型2维结果图;C.OPLS-DA模型的200次置换检验结果
, figureFileSmall=3cHE4JpjYDNrUNsEM+zl8w==, figureFileBig=v3bmQ8e4VJj1yZeQQuwAcw==, tableContent=null), ArticleFig(id=1307286675114193238, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=EN, label=Fig.3, caption=
Confusion matrix results for fecal sample test setA. Confusion matrix for DT model; B. Confusion matrix for RF model; C. Confusion matrix for KNN model; D. Confusion matrix for XGBoost model; E. Confusion matrix for LR model; F. Confusion matrix for DA model. 0 is the MET sample label and 1 is the H sample label
, figureFileSmall=d22ThTSgth1Dh8hdk6CjKA==, figureFileBig=yVjdZ7X//Q1J8iIotd9iLA==, tableContent=null), ArticleFig(id=1307286675172913495, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=CN, label=图3, caption=
粪便样本测试集混淆矩阵结果A.DT模型混淆矩阵;B.RF模型混淆矩阵;C.KNN模型混淆矩阵;D.XGBoost模型混淆矩阵;E.LR模型混淆矩阵;F.DA模型混淆矩阵。0是MET样本标签,1是H样本标签
, figureFileSmall=d22ThTSgth1Dh8hdk6CjKA==, figureFileBig=yVjdZ7X//Q1J8iIotd9iLA==, tableContent=null), ArticleFig(id=1307286676867412312, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=EN, label=Fig.4, caption=
ROC curves for train and test sets of fecal sampleA. Feces sample train set ROC curve;B. Feces sample test set ROC curve. The solid line represents the ROC; diagonal dotted line of different models, and the performance of the model is expressed in AUC
, figureFileSmall=j1/TxnPCgDpq3CTBmj9wgg==, figureFileBig=BkWm+IPPVepNNBcGP0c34Q==, tableContent=null), ArticleFig(id=1307286676942909785, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=CN, label=图4, caption=
粪便样本训练集和测试集ROC曲线A.粪便样本训练集ROC曲线;B.粪便样本测试集曲线。实线表示不同模型的ROC;对角虚线表示随机预测;模型的性能以AUC表示
, figureFileSmall=j1/TxnPCgDpq3CTBmj9wgg==, figureFileBig=BkWm+IPPVepNNBcGP0c34Q==, tableContent=null), ArticleFig(id=1307286677005824346, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=EN, label=Table 1, caption=
SelectKBest function for fecal sample electronic nose sensor feature selection score table
, figureFileSmall=null, figureFileBig=null, tableContent=
排名 Rank | 特征名称 Sensor | 评分 Score | 排名 Rank | 特征名称 Sensor | 评分 Score |
|---|
| 1 | S6 | 0.030 995 | 17 | S25 | 0.000 110 |
| 2 | S3 | 0.001 080 | 18 | S1 | 0.000 097 |
| 3 | S28 | 0.000 940 | 19 | S14 | 0.000 082 |
| 4 | S27 | 0.000 692 | 20 | S29 | 0.000 075 |
| 5 | S9 | 0.000 424 | 21 | S8 | 0.000 073 |
| 6 | S2 | 0.000 417 | 22 | S16 | 0.000 071 |
| 7 | S19 | 0.000 367 | 23 | S11 | 0.000 062 |
| 8 | S18 | 0.000 356 | 24 | S17 | 0.000 059 |
| 9 | S26 | 0.000 341 | 25 | S7 | 0.000 055 |
| 10 | S15 | 0.000 276 | 26 | S5 | 0.000 039 |
| 11 | S23 | 0.000 227 | 27 | S21 | 0.000 033 |
| 12 | S32 | 0.000 214 | 28 | S4 | 0.000 024 |
| 13 | S24 | 0.000 203 | 29 | S31 | 0.000 014 |
| 14 | S10 | 0.000 165 | 30 | S20 | 0.000 009 |
| 15 | S30 | 0.000 148 | 31 | S12 | 0.000 002 |
| 16 | S13 | 0.000 115 | 32 | S22 | 0.000 000 |
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SelectKBest函数对粪便样本电子鼻传感器特征选择评分表
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排名 Rank | 特征名称 Sensor | 评分 Score | 排名 Rank | 特征名称 Sensor | 评分 Score |
|---|
| 1 | S6 | 0.030 995 | 17 | S25 | 0.000 110 |
| 2 | S3 | 0.001 080 | 18 | S1 | 0.000 097 |
| 3 | S28 | 0.000 940 | 19 | S14 | 0.000 082 |
| 4 | S27 | 0.000 692 | 20 | S29 | 0.000 075 |
| 5 | S9 | 0.000 424 | 21 | S8 | 0.000 073 |
| 6 | S2 | 0.000 417 | 22 | S16 | 0.000 071 |
| 7 | S19 | 0.000 367 | 23 | S11 | 0.000 062 |
| 8 | S18 | 0.000 356 | 24 | S17 | 0.000 059 |
| 9 | S26 | 0.000 341 | 25 | S7 | 0.000 055 |
| 10 | S15 | 0.000 276 | 26 | S5 | 0.000 039 |
| 11 | S23 | 0.000 227 | 27 | S21 | 0.000 033 |
| 12 | S32 | 0.000 214 | 28 | S4 | 0.000 024 |
| 13 | S24 | 0.000 203 | 29 | S31 | 0.000 014 |
| 14 | S10 | 0.000 165 | 30 | S20 | 0.000 009 |
| 15 | S30 | 0.000 148 | 31 | S12 | 0.000 002 |
| 16 | S13 | 0.000 115 | 32 | S22 | 0.000 000 |
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Model evaluation metrics for fecal sample train and test sets
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| 数据集Dataset | 评价指标 Evaluation metrics | DT | RF | KNN | XGBoost | LDA |
|---|
| Train | ACC | 0.84 | 0.94 | 0.77 | 0.91 | 0.98 |
| TPR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| TNR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| PPV | 0.85 | 0.98 | 0.85 | 0.90 | 0.97 |
| Test | ACC | 0.88 | 0.96 | 0.88 | 0.91 | 0.98 |
| TPR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| TNR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| PPV | 0.85 | 0.98 | 0.85 | 0.90 | 0.97 |
| Precision | 0.92 | 0.95 | 0.97 | 0.92 | 1.00 |
| Recall | 0.89 | 1.00 | 0.84 | 0.95 | 0.97 |
| F1 Score | 0.91 | 0.97 | 0.90 | 0.94 | 0.99 |
), ArticleFig(id=1307286677215539549, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307007696352342756, language=CN, label=表2, caption=
粪便样本训练集和测试集模型评估指标
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| 数据集Dataset | 评价指标 Evaluation metrics | DT | RF | KNN | XGBoost | LDA |
|---|
| Train | ACC | 0.84 | 0.94 | 0.77 | 0.91 | 0.98 |
| TPR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| TNR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| PPV | 0.85 | 0.98 | 0.85 | 0.90 | 0.97 |
| Test | ACC | 0.88 | 0.96 | 0.88 | 0.91 | 0.98 |
| TPR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| TNR | 0.86 | 0.94 | 0.89 | 0.89 | 0.99 |
| PPV | 0.85 | 0.98 | 0.85 | 0.90 | 0.97 |
| Precision | 0.92 | 0.95 | 0.97 | 0.92 | 1.00 |
| Recall | 0.89 | 1.00 | 0.84 | 0.95 | 0.97 |
| F1 Score | 0.91 | 0.97 | 0.90 | 0.94 | 0.99 |
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