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Browsing Revistas científicas by Subject "Aborto en los animales"
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Item Neosporosis en animales domésticos: una revisión(Corporación Universitaria Lasallista, 2015-09-03) Blanco Martínez, Rafael David; Gómez León, Victor; Cardona Álvarez, JoséNeosporosis is a parasitary disease that affects dogs, cattle, sheep, goats, buffaloe, deer and horses, caused by Neospora caninum, an intracellular protozoan. This parasite can infect wild and domestic canids, the ruminants and the horses. Dogs (Canis lupus familiaris) and coyotes (Canis latrans) are definitive hosts of the protozoan, and this fact suggests that the agent can infect the cattle´s food with oocysts eliminated by these animals in their feces. The vertical transmission is known as responsible for the perpetuation of the infection within the herd, and this is why chronically infected cows transmit the parasite to the fetus during the gestation as a consequence of the recrudescence of the latent infection, which appears due to the immunosupression caused by the gestation. Abortion is the only clinical sign oberved in adult cows, but living calves with the infection, congenitally transmitted, can be found. They have low weight when they are born and they also show neurological signs, such as ataxia. The most important effect of neospirosis in cattle is the occurrence of abortions, with the economic loses they bring to producers. This is why the identification of the risk factors involved in the infection of cattle with Neospora caninum has important consequences in the development of strategies to control or prevent the disease, especially when there are no treatments or vaccines available.Item Seroprevalence and risk factors associated to bhv-1 and dvbv in dairy herds in Pasto, Colombia(Corporación Universitaria Lasallista, 2011) Cedeño Quevedo, Darío Alejandro; Benavides Benavides, Bibiana; Cárdenas, Guillermo; Herrera, CarlosIntroduction. The bovine herpes virus type I (BHV-1) causes the disease called Infectious Bovine Rhinotracheitis (IBR), infects cattle and presents clinical manifestations such as pustular vulvo-vaginitis, abortion, rhinotracheitis and meningoencephalitis. Objective. This research work aims to determine the prevalence of serum antibodies to bovine herpesvirus-1 (BHV-1) and bovine diarrhea (BVD) virus and risk factors associated to these infections in dairy herds in the municipality of Pasto, Colombia. Materials and methods. Farms above 2527 meters over the sea level were selected. A total of 238 serum samples were collected and analyzed using the ELISA test to determine the seropositivity against BHV-1 and BVD virus. A questionnaire, which included variables related to cattle, plus a health and a management measure were filled out in each herd. A multivariate analysis binary logistic regression was used with a confidence interval of 95% (p <0.05) using the program SPSS19 ®. Results. The estimated prevalence of exposure to BHV-1 in the municipality of Pasto was 17.65% and 32.77% for bovine viral diarrhea at the herd level. The binary logistic regression showed that the use of a bull instead of artificial insemination (OR = 30.56, CI 6.87, 135.98, P <0.0001) is a risk factor with BHV-1, and abortion (OR = 22.70, CI 4.21, 122.42, P <0.0001) and acquisition of new animals (OR = 34.90, CI 6.30, 193.43. P <0.0001) are risk factors with BVD. Conclusions. The prevalence of infectious rhinotracheitis and bovine viral diarrhea in dairy herds in Pasto does not indicate the existence of the disease in animals serologically positive, but suggests that at some point in their lives they were exposed to the virus. From the risk factors identified in this work, recommendations can be established for an effective control of reproductive diseases in the region.