Infectious agents associated with diarrhoea of calves in the canton of Tilarán, Costa Rica

 

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Detalles Bibliográficos
Autores: Perez, E., Kummeling, A., Janssen, M.M.H., Alvarado, R., Donado, P., Dwinger, R.H., Caballero, Magally, Jiménez Sánchez, Carlos
Formato: artículo
Fecha de Publicación:1997
Descripción:A case-control study of calves under 3 months of age was carried out by weekly visits to 15 farms in the canton of Tilarán, Costa Rica. Most farms were dedicated to beef or dual-purpose (DP) production. Faecal samples were collected over a 6-month period from a total of 194 calves with clinical signs and from 186 animals without clinical signs of diarrhoea as assessed by a scoring system. The samples were investigated for the presence of viruses, bacteria and parasites. Torovirus was detected for the first time in Costa Rica and was present in 14% of calves with diarrhoea and in 6% of the controls. Coronavirus and Rotavirus were less frequently encountered in either one of the groups (in 9 and 7% of scouring calves and in 1 and 2% of controls, respectively). Escherichia coli was detected in 94% of all the faecal samples, but isolates from only three samples from calves with diarrhoea contained the K99 antigen. Similarly, Salmonella was found only in scouring calves. Cryptosporidium oocysts were detected in animals with signs of diarrhoea, while other coccidia oocysts, Strongylida and Strongyloides eggs were frequently found in animals both with and without diarrhoea. A conditional logistic regression (CLR) analysis to compare healthy and scouring calves showed a significant difference with regard to the presence of Torovirus, Rotavirus and Coronavirus.
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:null:11056/27990
Acceso en línea:http://hdl.handle.net/11056/27990
Palabra clave:DIARREA
COSTA RICA
TERNEROS
CALVES
VIRUS
ENFERMEDADES GASTROINTESTINALES
GASTROINTESTINAL DISEASES