Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle
At present mastitis in dairy cattle is detected by using somatic cell count and various bacterial diagnostic tests. Still it is difficult to understand the exact health status of the animal by mere observation of the test results, since there maybe presence of sub-clinical cases. There are indicatio...
| Autor principal: | |
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| Formato: | Second cycle, A2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2012
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| Acceso en línea: | https://stud.epsilon.slu.se/4901/ |
| _version_ | 1855570759509868544 |
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| author | Sreedharan, Jyothy |
| author_browse | Sreedharan, Jyothy |
| author_facet | Sreedharan, Jyothy |
| author_sort | Sreedharan, Jyothy |
| collection | Epsilon Archive for Student Projects |
| description | At present mastitis in dairy cattle is detected by using somatic cell count and various bacterial diagnostic tests. Still it is difficult to understand the exact health status of the animal by mere observation of the test results, since there maybe presence of sub-clinical cases. There are indications in other species like poultry that natural antibodies might be used as indicators for the identification of (more) disease resistant individuals (Wijga, 2009). The present study focuses on the relationship between the natural antibody titres collected at a single sampling moment and the somatic cell count later inn the lactation. If proven, natural antibodies can be used as indicators for the immune status of the animal. For the present research the preliminary analysis of the fixed effects were analysed using the SAS software and the genetic parameters were estimated using the ASReml software. The results from the analyses show that relationships between the NAb titres and SCS after the sampling moment exists, but with a trend expressing a positive correlated response. The study shows that the NAb levels do not show a protective effect on the animal as the cell counts later in the lactation increased when the NAb levels increased. Hence NAb titre measured in milk samples may not be useful as a tool against mastitis selection. |
| format | Second cycle, A2E |
| id | RepoSLU4901 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2012 |
| publishDateSort | 2012 |
| record_format | eprints |
| spelling | RepoSLU49012012-10-05T14:10:18Z https://stud.epsilon.slu.se/4901/ Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle Sreedharan, Jyothy Animal genetics and breeding At present mastitis in dairy cattle is detected by using somatic cell count and various bacterial diagnostic tests. Still it is difficult to understand the exact health status of the animal by mere observation of the test results, since there maybe presence of sub-clinical cases. There are indications in other species like poultry that natural antibodies might be used as indicators for the identification of (more) disease resistant individuals (Wijga, 2009). The present study focuses on the relationship between the natural antibody titres collected at a single sampling moment and the somatic cell count later inn the lactation. If proven, natural antibodies can be used as indicators for the immune status of the animal. For the present research the preliminary analysis of the fixed effects were analysed using the SAS software and the genetic parameters were estimated using the ASReml software. The results from the analyses show that relationships between the NAb titres and SCS after the sampling moment exists, but with a trend expressing a positive correlated response. The study shows that the NAb levels do not show a protective effect on the animal as the cell counts later in the lactation increased when the NAb levels increased. Hence NAb titre measured in milk samples may not be useful as a tool against mastitis selection. 2012-10-04 Second cycle, A2E NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/4901/7/sreedharan_j_121004.pdf Sreedharan, Jyothy, 2011. Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle. Second cycle, A2E. Uppsala: (VH) > Dept. of Animal Breeding and Genetics (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-670.html> urn:nbn:se:slu:epsilon-s-1737 eng |
| spellingShingle | Animal genetics and breeding Sreedharan, Jyothy Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title | Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title_full | Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title_fullStr | Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title_full_unstemmed | Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title_short | Relationship between Natural Antibody levels and Somatic Cell Count in Dairy Cattle |
| title_sort | relationship between natural antibody levels and somatic cell count in dairy cattle |
| topic | Animal genetics and breeding |
| url | https://stud.epsilon.slu.se/4901/ https://stud.epsilon.slu.se/4901/ |