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Abstract

This paper describes an ELISA test using blood serum samples to detect dairy cattle persistently infected with BVDV in 9 dairy farms in the 10th region of Chile. It was shown that 0.3% of the serum samples were positive to the ELISA test and 33.3% of the dairy herds had persistently infected...

Author(s)
Reinhardt, G.; Ochoa, C. A.; Tadich, N.; Riedemann, S.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2003, 35, 1, pp 89-93
Abstract

Bovine viral diarrhoea virus (BVDV) has a worldwide distribution and most cattle are seropositive, although the prevalence may vary among herds and among different age groups. Persistently infected (PI) animals are the most efficient transmitters of infection often remaining unnoticed in the herds, ...

Author(s)
Reinhardt, G.; Riedemann, S.; Tadich, N.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2002, 34, 1, pp 97-101
Abstract

In southern Chile (regions IX and X) serum samples were obtained from 200 representative herds; 45 (14.5%) of the 310 cattle sampled in 14 herds were positive to the immunodiffusion test for bovine leukosis. In these 14 herds, 63 cattle (20.3%) had positive neutralization titres for IBR IPV virus....

Author(s)
Hochstein-Mintzel, V.; Riedemann, S.; Alonso, O.; Niedda, M.; Aguilar, M.; Reinhardt, G.; Veer, C. de; Rojax, X.; Chahuan, E.; Ehrenfeld, J.; Campo, H. del; Montes, L.; Tamayo, R.
Citation
Journal of Veterinary Medicine, B (Infectious Diseases, Immunology, Food Hygiene, Veterinary Public Health), 1986, 33, 3, pp 161-165
Abstract

Serum samples from 2864 cattle were analysed for antibodies against PI-3 by haemagglutination inhibition and against BDV, BHV-1 and BRSV by virus neutralization. The herd seroprevalence was 100% for BDV, PI-3 and BRSV and 91.7% for BHV-3. The individual seroprevalences were 50.9, 41.0, 97.1 and...

Author(s)
Riedemann, S.; Reinhardt, G.; Tadich, N.; Aguilar, M.; Aguilar, R.; Montecinos, M. I.; Miranda, J. C.
Citation
Archivos de Medicina Veterinaria, 1996, 28, 1, pp 121-124
Abstract

Bovine viral diarrhoea/Mucosal disease (BVD/MD) is a worldwide viral disease with a great impact in bovine reproduction and production. In Chile, the disease has been reported with over 60% prevalence and it demands adequate diagnostic methods. Currently the official serological diagnostic test in...

Author(s)
Reinhardt, G.; Carrasco, L.; Tadich, N.; Riedemann, S.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2001, 33, 2, pp 173-183
Abstract

Of 361 clinically healthy cattle slaughtered at Valdivia 162 (45%) were positive for L. interrogans antibodies, mainly serovars hardjo (110), pomona (19) and tarassovi (14), and 50 (14%) yielded L. interrogans from kidney tissue - serovar hardjo bovis A from 36, hardjo bovis B from 3 and kennewicki ...

Author(s)
Zamora, J.; Riedemann, S.; Montecinos, M. I.; Cabezas, X.
Citation
Archivos de Medicina Veterinaria, 1991, 23, 2, pp 131-135
Abstract

In neutralization tests for bovine diarrhoea/mucosal disease (BVD/MD) seroprevalence on 948 cow serum samples collected from 40 large herds of the IXth and Xth Regions in southern Chile, and on 116 bulls, 700 of the 948 cows were positive (73.8%) at a titre of ≥ 1:5. The herd seroprevalence was...

Author(s)
Reinhardt, G.; Riedemann, S.; Ernst, S.; Aguilar, M.; Enriquez, R.; Gallardo, J.
Citation
Preventive Veterinary Medicine, 1990, 10, 1-2, pp 73-78
Abstract

Author(s)
Zamora, J.; Riedemann, S.; Frías, M.
Citation
Archivos de Medicina Veterinaria, Chile, 1988, 20, 2, pp 136-140
Abstract

Author(s)
Zamora, J.; Reinhardt, G.; Riedemann, S.; Tadich, N.; Cabezas, X.
Citation
Archivos de Medicina Veterinaria, 1991, 23, 2, pp 205-206
Abstract

An 80-hectare dairy farm had 137 cows, 28 heifers and 55 female calves, cross-bred Holando-Europeo and Holstein-Friesian. It was a closed herd, free of brucellosis and tuberculosis, and breeding was by artificial insemination, with no new animals introduced in the last 7 years. Testing for enzootic ...

Author(s)
Reinhardt, G.; Hochstein-Mintzel, V.; Riedemann, S.; Leal, H.; Niedda, M.
Citation
Journal of Veterinary Medicine, B (Infectious Diseases, Immunology, Food Hygiene, Veterinary Public Health), 1988, 35, 3, pp 178-185

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