Infection of rotavirus in dairy calves in south Vietnam
Rotavirus A is a double stranded RNA commonly considered to cause diarrhoea in young calves. There is no specific treatment for the disease and it can become economically devastating to the farmer. In this investigation 120 faecal samples were collected from dairy calves in South Vietnam in order to...
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| Formato: | Otro |
| Lenguaje: | sueco Inglés |
| Publicado: |
2007
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| Acceso en línea: | https://stud.epsilon.slu.se/11731/ |
| _version_ | 1855571927688544256 |
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| author | Kyle, Helena |
| author_browse | Kyle, Helena |
| author_facet | Kyle, Helena |
| author_sort | Kyle, Helena |
| collection | Epsilon Archive for Student Projects |
| description | Rotavirus A is a double stranded RNA commonly considered to cause diarrhoea in young calves. There is no specific treatment for the disease and it can become economically devastating to the farmer. In this investigation 120 faecal samples were collected from dairy calves in South Vietnam in order to estimate the occurrence and importance of rotavirus infection in the country. The samples were also used for a co-operating study of the protozoan parasite Cryptosporidium parvum. The calves were younger than two months old and both diarrhoeic and non diarrhoeic individuals were sampled. Half the samples were collected at state farms with herd sizes of several hundred cows and the other half were from household farms with 1 and 100 cows. The samples were analysed for presence of rotavirus A by ELISA.
18 samples were positive for rotavirus, 2 of these samples were co-infections with C. parvum. 17 of the positive samples were found in state farms. Only 2 samples in total were found positive in household farms.
45 samples out of 120 came from calves suffering from diarrhoea. Twelve samples from calves with rotavirus infection were identified as diarrhoeic, 2 of these were co-infected samples. The number of diarrhoeic samples free from infection of rotavirus indicates that also other enteropathogens are involved in causing diarrhoea in South Vietnam. |
| format | Otro |
| id | RepoSLU11731 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2007 |
| publishDateSort | 2007 |
| record_format | eprints |
| spelling | RepoSLU117312017-11-16T13:07:28Z https://stud.epsilon.slu.se/11731/ Infection of rotavirus in dairy calves in south Vietnam Kyle, Helena Veterinary science and hygiene - General aspects Rotavirus A is a double stranded RNA commonly considered to cause diarrhoea in young calves. There is no specific treatment for the disease and it can become economically devastating to the farmer. In this investigation 120 faecal samples were collected from dairy calves in South Vietnam in order to estimate the occurrence and importance of rotavirus infection in the country. The samples were also used for a co-operating study of the protozoan parasite Cryptosporidium parvum. The calves were younger than two months old and both diarrhoeic and non diarrhoeic individuals were sampled. Half the samples were collected at state farms with herd sizes of several hundred cows and the other half were from household farms with 1 and 100 cows. The samples were analysed for presence of rotavirus A by ELISA. 18 samples were positive for rotavirus, 2 of these samples were co-infections with C. parvum. 17 of the positive samples were found in state farms. Only 2 samples in total were found positive in household farms. 45 samples out of 120 came from calves suffering from diarrhoea. Twelve samples from calves with rotavirus infection were identified as diarrhoeic, 2 of these were co-infected samples. The number of diarrhoeic samples free from infection of rotavirus indicates that also other enteropathogens are involved in causing diarrhoea in South Vietnam. Rotavirus A är ett dubbelsträngat RNA-virus som är en vanlig orsak till kalvdiarré. Det finns ingen effektiv behandling för rotavirusinfektion och ett sjukdomsutbrott kan bli ekonomiskt förödande för bonden. I denna studie samlades 120 prover in från mjölkraskalvar i södra Vietnam för att undersöka förekomsten av infektion med rotavirus. Proverna testades i en parallell studie även för Cryptosporidium parvum. Kalvarna i studien var yngre än två månader, och både kalvar med och utan diarré provtogs. Hälften av proverna togs på statligt ägda gårdar med flera hundra kor medan den andra hälften var från familjejordbruk med 1-100 kor. Proverna anlyserades med avseende på förekomst av rotavirus med antigen-ELISA. 18 prover fanns vara positiva för rotavirus och i 3 av dessa prover påträffades även C. parvum. Sjutton av de rotavirus- positiva proverna kom från statligt ägda gårdar. Sammanlagt var endast 2 prover tagna på familjejordbruk positiva. 45 av de 120 proverna kom från kalvar med diarré. 12 av kalvarna med diarré var positiva för rotavirus, och 2 av dessa var saminfektioner med C. parvum. Antalet negativa prover från kalvar med diarré visar att andra patogener troligen är vanliga inslag i infektionspanoramat vid kalvdiarré i södra Vietnam. 2007-12-27 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/11731/1/kyle_h_171116.pdf Kyle, Helena, 2007. Infection of rotavirus in dairy calves in south Vietnam. UNSPECIFIED, Uppsala. Uppsala: (VH) > Dept. of Clinical Sciences (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-715.html> urn:nbn:se:slu:epsilon-s-8897 eng |
| spellingShingle | Veterinary science and hygiene - General aspects Kyle, Helena Infection of rotavirus in dairy calves in south Vietnam |
| title | Infection of rotavirus in dairy calves in south Vietnam |
| title_full | Infection of rotavirus in dairy calves in south Vietnam |
| title_fullStr | Infection of rotavirus in dairy calves in south Vietnam |
| title_full_unstemmed | Infection of rotavirus in dairy calves in south Vietnam |
| title_short | Infection of rotavirus in dairy calves in south Vietnam |
| title_sort | infection of rotavirus in dairy calves in south vietnam |
| topic | Veterinary science and hygiene - General aspects |
| url | https://stud.epsilon.slu.se/11731/ https://stud.epsilon.slu.se/11731/ |