Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests
The aim of the present study was to determine a threshold values and to assess the effectiveness of four indirect tests for the diagnosis of subclinical mastitis in dairy camels comparing with bacteriological culture. One hundred fifty three milk samples from 17 lactating camels were subjected to ba...
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| Format: | Article |
| Language: | English |
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2016-12-01
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| Series: | Acta Agriculturae Slovenica |
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| Online Access: | https://journals.uni-lj.si/aas/article/view/12721 |
| _version_ | 1826532145528569856 |
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| author | Leyla HADEF Hebib AGGAD Brahim HAMAD Mohamed Said MAHMOUD Aicha ADAIKA |
| author_facet | Leyla HADEF Hebib AGGAD Brahim HAMAD Mohamed Said MAHMOUD Aicha ADAIKA |
| author_sort | Leyla HADEF |
| collection | DOAJ |
| description | The aim of the present study was to determine a threshold values and to assess the effectiveness of four indirect tests for the diagnosis of subclinical mastitis in dairy camels comparing with bacteriological culture. One hundred fifty three milk samples from 17 lactating camels were subjected to bacteriological culture, where 84 milk samples were positive, 47 were negative and 22 samples were considered as contaminated. A total of 131 milk samples were screened by pH, electrical conductivity (EC), California mastitis test (CMT) and somatic cell count (SCC). The good combination of sensitivity and specificity were obtained with a threshold of 6.55, 7.2 mS/cm, score trace was considered as CMT (+) and 240 000 cells/ml for the four tests, respectively. The sensitivity of the SCC, pH, EC and CMT was 72.61, 66.66, 47.61 and 39.28 %; the specificity 70.21, 38.02, 59.57 and 72.34 %; percentage accuracy 71.75, 51.14, 51.90 and 51.14 %; and positive predictive value 81.33, 47.61, 67.79 and 71.73 %, respectively. The SCC was significantly correlated with bacteriological culture (r = 0.415, p < 0.05). Kappa value of SCC was higher than that of other tests (SCC > CMT > EC > pH). In conclusion, the results suggest that the SCC was the most accurate, reliable, diagnostic method compared to other tests used in this study after cultural isolation for the detection of subclinical mastitis in dairy camel under field conditions. |
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| format | Article |
| id | doaj.art-a5e7b3028e6b4a51a32ef514f34e5dcf |
| institution | Directory Open Access Journal |
| issn | 1854-1941 |
| language | English |
| last_indexed | 2025-03-14T01:46:35Z |
| publishDate | 2016-12-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Acta Agriculturae Slovenica |
| spelling | doaj.art-a5e7b3028e6b4a51a32ef514f34e5dcf2025-03-12T12:42:00ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Acta Agriculturae Slovenica1854-19412016-12-01108210.14720/aas.2016.108.2.319113Subclinical mastitis in dairy camels in Algeria: Comparison of screening testsLeyla HADEF0Hebib AGGAD1Brahim HAMAD2Mohamed Said MAHMOUD3Aicha ADAIKA4University of Tiaret and University El-Oued, AlgeriaUniversity of Tiaret, AlgeriaUniversity of Tiaret and University El-Oued, AlgeriaUniversity of Tiaret, AlgeriaUniversity El-Oued, AlgeriaThe aim of the present study was to determine a threshold values and to assess the effectiveness of four indirect tests for the diagnosis of subclinical mastitis in dairy camels comparing with bacteriological culture. One hundred fifty three milk samples from 17 lactating camels were subjected to bacteriological culture, where 84 milk samples were positive, 47 were negative and 22 samples were considered as contaminated. A total of 131 milk samples were screened by pH, electrical conductivity (EC), California mastitis test (CMT) and somatic cell count (SCC). The good combination of sensitivity and specificity were obtained with a threshold of 6.55, 7.2 mS/cm, score trace was considered as CMT (+) and 240 000 cells/ml for the four tests, respectively. The sensitivity of the SCC, pH, EC and CMT was 72.61, 66.66, 47.61 and 39.28 %; the specificity 70.21, 38.02, 59.57 and 72.34 %; percentage accuracy 71.75, 51.14, 51.90 and 51.14 %; and positive predictive value 81.33, 47.61, 67.79 and 71.73 %, respectively. The SCC was significantly correlated with bacteriological culture (r = 0.415, p < 0.05). Kappa value of SCC was higher than that of other tests (SCC > CMT > EC > pH). In conclusion, the results suggest that the SCC was the most accurate, reliable, diagnostic method compared to other tests used in this study after cultural isolation for the detection of subclinical mastitis in dairy camel under field conditions.https://journals.uni-lj.si/aas/article/view/12721camelsdromedariesCamelus dromedariuslactationsubclinical mastitisscreening tests |
| spellingShingle | Leyla HADEF Hebib AGGAD Brahim HAMAD Mohamed Said MAHMOUD Aicha ADAIKA Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests Acta Agriculturae Slovenica camels dromedaries Camelus dromedarius lactation subclinical mastitis screening tests |
| title | Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests |
| title_full | Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests |
| title_fullStr | Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests |
| title_full_unstemmed | Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests |
| title_short | Subclinical mastitis in dairy camels in Algeria: Comparison of screening tests |
| title_sort | subclinical mastitis in dairy camels in algeria comparison of screening tests |
| topic | camels dromedaries Camelus dromedarius lactation subclinical mastitis screening tests |
| url | https://journals.uni-lj.si/aas/article/view/12721 |
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