Appraisal of the epidemiology of Neospora caninum infection in Costa Rican dairy cattle

 

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Detalles Bibliográficos
Autor: ROMERO-ZUÑIGA, JUAN JOSÉ
Formato: libro
Fecha de Publicación:2005
Descripción:Appraisal of the epidemiology of Neospora caninum infection in Costa Rican dairy cattle. In Costa Rica, milk production has increased gradually during the twentieth century, in which the activity developed from a non-technical to a technical activity. Together with the evolution of the dairy sector, the incidence of infectious and metabolic diseases increased, leading to increased economic losses. According to a VAMPP data base, the global percentage of abortion during the period between 1988 and 2003 varied between 7.5 and 12%; but at individual farms abortion rates close to 30% occurred in one or more years. Abortion is one of the most important economic disorders. Since the 90´s neosporosis (N. caninum) has been associated with abortion and foetal losses in cattle all over the world. In 1996, a study stated (for the first time) the presence of neosporosis in Costa Rica and N. caninum was diagnosed (Perez et al., 1998). The aim of this thesis is to describe the most important features of neosporosis in Costa Rican dairy cattle in order to develop strategies for the prevention and control of the infection. The main results of this thesis are: 1) no significant effects of Neospora serostatus were detected on (re)productive performance; 2) the association between management and environmental factors with serostatus was found to be absent 3) in the specific conditions of the dairy herds involved in this study, the serostatus of the cows should be not used as predictor of the serostatus of daughters due to the high probability of horizontal transmission, 4) the killed whole Neospora caninum tachyzoite preparation reduced the abortion rate in Costa Rican dairy cattle
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:null:11056/26495
Acceso en línea:http://hdl.handle.net/11056/26495
Palabra clave:EPIDEMIOLOGY
EPIDEMIOLOGIA
GANADO DE LECHE
MILK CATTLE
ENFERMEDADES INFECCIOSAS
INFECTIOUS DISEASES
ABORTO EN LOS ANIMALES
ASPECTOS ECONOMICOS
ANIMAL ABORTION
ECONOMIC ASPECTS
COSTA RICA