Publications

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bluetongue virus and epizootic haemorrhagic disease of deer virus serotypes in northern colombian cattle.there is recent evidence of bluetongue (bt) and epizootic haemorrhagic disease (ehd) virus infection of cattle in the american tropics, including bt group reactive antibody in colombian cattle. these observations prompted a study to determine serologically the specific bt and ehd virus types present, and time of infection and to collect culicoides spp. as potential vectors. a prospective study of bt and ehd virus infection was done on two farms in the colombian department of antioquia. sequentia ...19852991365
[serological survey of parainfluenza virus infection in cattle of antioquia, colombia, 1976]. 19806255962
microbiological quality indicators in waters of dairy farms: detection of pathogens by pcr in real time.when contaminated water is used to wash the udders of dairy cattle and milking utensils, raw milk may become contaminated with pathogens. washing with high quality water is essential to reduce the microbial contamination of milk. furthermore, the wastewater generated in dairy herds also contains high populations of pathogens, antibiotics and nutrients that more often are thrown into the water bodies without any treatment. in this work, both supply water and wastewater from 20 dairy farms from an ...201222542296
influence of milking method, disinfection and herd management practices on bulk tank milk somatic cell counts in tropical dairy herds in colombia.the aims of this study were to evaluate the effects of milking method, disinfection practices and other management factors on the bulk tank milk somatic cell count (btscc) in tropical dairy herds and to examine potential interactions with time. one hundred and thirty farms in the northern region of antioquia, colombia, were visited once per month for 24 months. a two level linear mixed model for repeated measures was used to assess the impact on log transformed btscc (lnbtscc). the geometric mea ...201728190491
herd- and cow-level risk factors associated with subclinical mastitis in dairy farms from the high plains of the northern antioquia, colombia.mastitis is the main disease entity affecting dairy farms in the colombian high plains of northern antioquia, colombia. however, no previous epidemiologic studies have determined the characteristics that increase the risk of infection in this region, where manual milking is still the prevailing system of milking. a 24-mo longitudinal study was designed to identify the predominant mastitis pathogens and important herd- and cow-level risk factors. monthly visits were made to 37 commercial dairy fa ...201424792788
milk yield and lactation stage are associated with positive results to elisa for mycobacterium avium subsp. paratuberculosis in dairy cows from northern antioquia, colombia: a preliminary study.paratuberculosis is a slow-developing infectious disease characterized by chronic granulomatous enterocolitis. this disease has a variable incubation period from 6 months to over 15 years and is caused by mycobacterium avium subsp. paratuberculosis (map). some studies have been conducted in cattle during the last decades in colombia. however, those studies were designed using relatively small populations and were not aimed to establish prevalence. this study aimed to determine the map seropreval ...201627165342
[structural recovering in andean successional forests from porce (antioquia, colombia)].places subjected to natural or human disturbance can recover forest through an ecological process called secondary succession. tropical succession is affected by factors such as disturbances, distance from original forest, surface configuration and local climate. these factors determine the composition of species and the time trend of the succession itself. we studied succession in soils used for cattle ranching over various decades in the porce region of colombia (andean colombian forests). a s ...201020411733
epidemiology of cattle anaplasmosis in colombia: i. prevalence and distribution of agglutinating antibodies.a survey to detect antibodies against anaplasma marginale, using the card test, was conducted on serum samples collected from cattle of cordoba department and north-eastern region of the department of antioquia in the republic of colombia. the samples were from native cattle of spanish descent (bos taurus), zebu (bos indicus) and various zebu-native crosses. the age range was between three and eight year olds. the results revealed that 90.3% of the samples were positive. all breeds showed a high ...1978705897
[ecological studies of vesicular stomatitis in antioquia, colombia]. 1979229882
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