Resumen de Evolución de la prevalencia de la tricomonosis bovina en españa y nuevas alternativas para su control

Esther Collantes Fernández, Silvia Rojo Montejo, Román Sánchez Sánchez, V. Navarro Lozano, Javier Moreno Gonzalo, A. Román Trufero, Koldo Osoro Otaduy, Luis Miguel Ortega Mora

• The occurrence of bovine trichomonosis (BT) in Spanish beef cattle farmed under extensive conditions has significantly increased in the last years. Nowadays, the control of BT only relies on the identification of infected bulls followed by their removal from the herd. Vaccination has been proposed as an efficient control measure when risk factors (e.g. sharing pastures) are present. However, commercial vaccines are not available in Europe. The present study focused on the follow-up of BT prevalence in Spain from 2008 to 2014, and on the new insights in vaccine development. In the prevalence study, the number of infected bulls significantly decreased from 30.8% during the period 2008-2010 to 11.6% in 2014, probably due to the implementation of BT regular monitoring programs. Nevertheless, the BT prevalence is still high indicating that the test and cull measures are not 100% efficient. This fact highlights the need for other alternatives such as vaccination. In the second study, the safety and efficacy of different inactivated vaccine formulations based on Tritrichomonas foetus membrane antigens in combination with saponins were evaluated in an experimental bovine model. All the formulations were safe and reduced the mean time of infection from 64 days to 33-46 days. These promising results point out vaccination as a feasible and efficient measure for BT control in Spain.