CHGA and infection: Although not significant, there was a tendency of higher infection ratio of B. bovis in larval progeny from the Spi (P = 0.0698) and Lpc (P = 0.1789) silenced females than in the larval progeny from the control females, and consequently 80% and 70% of larval progeny from the Spi and Lpc silenced groups, respectively were infected with the protozoan.