The Experts below are selected from a list of 24897 Experts worldwide ranked by ideXlab platform
Jose De La Fuente - One of the best experts on this subject based on the ideXlab platform.
-
allopatric speciation in ticks genetic and reproductive divergence between geographic strains of rhipicephalus boophilus microplus
BMC Evolutionary Biology, 2009Co-Authors: Marcelo B Labruna, Jose De La Fuente, Victoria Naranjo, Atilio J Mangold, Carolina Thompson, Agustin Estradapena, Alberto A Guglielmone, Frans JongejanAbstract:Background The Cattle tick, Rhipicephalus (Boophilus) microplus, economically impact Cattle Industry in tropical and subtropical regions of the world. The morphological and genetic differences among R. microplus strains have been documented in the literature, suggesting that biogeographical and ecological separation may have resulted in boophilid ticks from America/Africa and those from Australia being different species. To test the hypothesis of the presence of different boophilid species, herein we performed a series of experiments to characterize the reproductive performance of crosses between R. microplus from Australia, Africa and America and the genetic diversity of strains from Australia, Asia, Africa and America.
-
vaccination against ticks boophilus spp the experience with the bm86 based vaccine gavac
Genetic Analysis: Biomolecular Engineering, 1999Co-Authors: Jose De La Fuente, Manuel Rodriguez, Carlos Montero, M Redondo, Jose C Garciagarcia, Luis Mendez, Emerio Serrano, Mario Valdes, Antonio Enriquez, Mario CanalesAbstract:Abstract The control of tick infestations and the transmission of tick-borne diseases remain a challenge for the Cattle Industry in tropical and subtropical areas of the world. Traditional control methods have been only partially successful and the parasites continue to result in significant losses for the Cattle Industry. Recently, vaccines containing the recombinant B. microplus gut antigen Bm86 have been developed. Our vaccine formulation (Gavac™, Heber Biotec S.A., Havana, Cuba) has been registered and is commercially available in Cuba, Colombia, Dominican Republic, Brazil and Mexico. In controlled pen trials, Gavac™ has been effective for the control of artificial infestations of B. annulatus , B. decoloratus and chemical-sensitive and resistant B. microplus strains from Australia, Africa, America and Iran. In controlled field trials in Cuba, Brazil, Argentina and Mexico, Gavac has shown a 55–100% efficacy in the control of B. microplus infestations in grazing Cattle 12–36 weeks after the first vaccination. Field trials under production conditions have been conducted in Cuba, Colombia, Brazil and Mexico in pure and cross-bred Cattle herds. The application of Gavac™ has increased the time between acaricide treatments by an average of 32±21 days ( P =0.0005) resulting in important savings for the Cattle Industry. In Cuba, a cost-effectiveness analysis was conducted in more than 260 000 animals. The cost-effectiveness analysis showed a 60% reduction in the number of acaricide treatments, together with the control of tick infestations and transmission of babesiosis, which resulted in savings of $23.4 animal −1 year −1 . These results clearly demonstrate the advantage of vaccination and support the application of Gavac for the control of Boophilus spp. infestations.
-
field studies and cost effectiveness analysis of vaccination with gavac against the Cattle tick boophilus microplus
Vaccine, 1998Co-Authors: Jose De La Fuente, Manuel Rodriguez, Carlos Montero, M Redondo, Jose C Garciagarcia, Emerio Serrano, Antonio Enriquez, Lidice Mendez, Monica Valdes, Mario CanalesAbstract:The control of tick infestations and the transmission of tick-borne diseases remains a challenge for the Cattle Industry in tropical and subtropical areas of the world. Traditional control methods have been only partially successful and the parasites continue to result in significant losses for the Cattle Industry. Recently, vaccines containing the recombinant Boophilus microplus gut antigen Bm86 have been developed. These vaccines have been shown to control tick infestations in the field. However, extensive field studies investigating the efficacy and cost-effectiveness of vaccination have not been reported and are needed to appraise the effect of this new approach for tick control. Here is reported the results of the application of Gavac™ in a field trial including more than 260000 animals in Cuba. In this study the correlation between the antibody response to vaccination and the effect on tickś fertility is determined. Physiological status of the animals was found to affect the primary response to vaccination but not the antibody titers after revaccination. A cost-effectiveness analysis showed a 60% reduction in the number acaricide treatments, together with the control of tick infestations and transmission of babesiosis, which resulted in savings of $23.4 animal−1 year−1. These results clearly demonstrate the advantage of vaccination and support the application of Gavac™ for tick control.
L D Warnick - One of the best experts on this subject based on the ideXlab platform.
-
Københavns Universitet Modelling a national programme for the control of foodborne pathogens in livestock Modelling a national programme for the control of foodborne pathogens in livestock: the case of Salmonella Dublin in the Danish Cattle Industry
2020Co-Authors: Liza Nielsen, L R Nielsen, L D Warnick, Jo D R Da N, A N, D Ic L D W A R N KAbstract:SUMMARY A 'virtual hierarchy ' model is described for studying the spread of pathogens between herds of livestock. This novel approach to simulating disease has animals, herds, and geographic regions in a national livestock Industry arranged as a hierarchy of objects in computer memory. Superimposed on all objects is an infection-recovery cycle, a control programme, and surveillance based on test results and animal movement. The model was applied to predicting progress in the control of Salmonella Dublin in the Danish dairy Cattle Industry over a 10-year period. More frequent testing of bulk tank milk for antibodies to S. Dublin was less effective than improved herd biosecurity. Restricting Cattle movement between regions provided a strong benefit to those regions initially with a low prevalence of infection. Enhanced control within infected herds was of intermediate benefit. A combination of strategies was highly effective although cost and feasibility of this option needs further exploration
-
modelling a national programme for the control of foodborne pathogens in livestock the case of salmonella dublin in the danish Cattle Industry
Epidemiology and Infection, 2008Co-Authors: David Jordan, L R Nielsen, L D WarnickAbstract:SUMMARY A 'virtual hierarchy' model is described for studying the spread of pathogens between herds of livestock. This novel approach to simulating disease has animals, herds, and geographic regions in a national livestock Industry arranged as a hierarchy of objects in computer memory. Superimposed on all objects is an infection-recovery cycle, a control programme, and surveillance based on test results and animal movement. The model was applied to predicting progress in the control of Salmonella Dublin in the Danish dairy Cattle Industry over a 10-year period. More frequent testing of bulk tank milk for antibodies to S. Dublin was less effective than improved herd biosecurity. Restricting Cattle movement between regions provided a strong benefit to those regions initially with a low prevalence of infection. Enhanced control within infected herds was of intermediate benefit. A combination of strategies was highly effective although cost and feasibility of this option needs further exploration.
Kim A Brogden - One of the best experts on this subject based on the ideXlab platform.
-
response of the ruminant respiratory tract to mannheimia pasteurella haemolytica
Microbes and Infection, 2000Co-Authors: Mark R Ackermann, Kim A BrogdenAbstract:Abstract Pneumonia is a leading cause of loss to the sheep and Cattle Industry throughout the world. Mannheimia (Pasteurella) haemolytica is one of the most important respiratory pathogens of domestic ruminants and causes serious outbreaks of acute pneumonia in neonatal, weaned and growing lambs, calves, and goats. M. haemolytica is also an important cause of pneumonia in adult animals. Transportation, viral infections with agents such as infectious bovine rhinotracheitis virus, parainfluenza-3 virus or bovine respiratory syncytial virus, overcrowding, housing of neonates and weaned animals together and other stressful conditions predispose animals to M. haemolytica infection [1] , [2] . This review assimilates some of the findings key to cellular and molecular responses of the lung from a pathologist′s perspective. It includes some of what is known and underscores areas that are not fully understood.
Mario Canales - One of the best experts on this subject based on the ideXlab platform.
-
vaccination against ticks boophilus spp the experience with the bm86 based vaccine gavac
Genetic Analysis: Biomolecular Engineering, 1999Co-Authors: Jose De La Fuente, Manuel Rodriguez, Carlos Montero, M Redondo, Jose C Garciagarcia, Luis Mendez, Emerio Serrano, Mario Valdes, Antonio Enriquez, Mario CanalesAbstract:Abstract The control of tick infestations and the transmission of tick-borne diseases remain a challenge for the Cattle Industry in tropical and subtropical areas of the world. Traditional control methods have been only partially successful and the parasites continue to result in significant losses for the Cattle Industry. Recently, vaccines containing the recombinant B. microplus gut antigen Bm86 have been developed. Our vaccine formulation (Gavac™, Heber Biotec S.A., Havana, Cuba) has been registered and is commercially available in Cuba, Colombia, Dominican Republic, Brazil and Mexico. In controlled pen trials, Gavac™ has been effective for the control of artificial infestations of B. annulatus , B. decoloratus and chemical-sensitive and resistant B. microplus strains from Australia, Africa, America and Iran. In controlled field trials in Cuba, Brazil, Argentina and Mexico, Gavac has shown a 55–100% efficacy in the control of B. microplus infestations in grazing Cattle 12–36 weeks after the first vaccination. Field trials under production conditions have been conducted in Cuba, Colombia, Brazil and Mexico in pure and cross-bred Cattle herds. The application of Gavac™ has increased the time between acaricide treatments by an average of 32±21 days ( P =0.0005) resulting in important savings for the Cattle Industry. In Cuba, a cost-effectiveness analysis was conducted in more than 260 000 animals. The cost-effectiveness analysis showed a 60% reduction in the number of acaricide treatments, together with the control of tick infestations and transmission of babesiosis, which resulted in savings of $23.4 animal −1 year −1 . These results clearly demonstrate the advantage of vaccination and support the application of Gavac for the control of Boophilus spp. infestations.
-
field studies and cost effectiveness analysis of vaccination with gavac against the Cattle tick boophilus microplus
Vaccine, 1998Co-Authors: Jose De La Fuente, Manuel Rodriguez, Carlos Montero, M Redondo, Jose C Garciagarcia, Emerio Serrano, Antonio Enriquez, Lidice Mendez, Monica Valdes, Mario CanalesAbstract:The control of tick infestations and the transmission of tick-borne diseases remains a challenge for the Cattle Industry in tropical and subtropical areas of the world. Traditional control methods have been only partially successful and the parasites continue to result in significant losses for the Cattle Industry. Recently, vaccines containing the recombinant Boophilus microplus gut antigen Bm86 have been developed. These vaccines have been shown to control tick infestations in the field. However, extensive field studies investigating the efficacy and cost-effectiveness of vaccination have not been reported and are needed to appraise the effect of this new approach for tick control. Here is reported the results of the application of Gavac™ in a field trial including more than 260000 animals in Cuba. In this study the correlation between the antibody response to vaccination and the effect on tickś fertility is determined. Physiological status of the animals was found to affect the primary response to vaccination but not the antibody titers after revaccination. A cost-effectiveness analysis showed a 60% reduction in the number acaricide treatments, together with the control of tick infestations and transmission of babesiosis, which resulted in savings of $23.4 animal−1 year−1. These results clearly demonstrate the advantage of vaccination and support the application of Gavac™ for tick control.
David Jordan - One of the best experts on this subject based on the ideXlab platform.
-
modelling a national programme for the control of foodborne pathogens in livestock the case of salmonella dublin in the danish Cattle Industry
Epidemiology and Infection, 2008Co-Authors: David Jordan, L R Nielsen, L D WarnickAbstract:SUMMARY A 'virtual hierarchy' model is described for studying the spread of pathogens between herds of livestock. This novel approach to simulating disease has animals, herds, and geographic regions in a national livestock Industry arranged as a hierarchy of objects in computer memory. Superimposed on all objects is an infection-recovery cycle, a control programme, and surveillance based on test results and animal movement. The model was applied to predicting progress in the control of Salmonella Dublin in the Danish dairy Cattle Industry over a 10-year period. More frequent testing of bulk tank milk for antibodies to S. Dublin was less effective than improved herd biosecurity. Restricting Cattle movement between regions provided a strong benefit to those regions initially with a low prevalence of infection. Enhanced control within infected herds was of intermediate benefit. A combination of strategies was highly effective although cost and feasibility of this option needs further exploration.