Figure 4From: Reducing microbial ureolytic activity in the rumen by immunization against urease thereinUrease activity in the rumen after immunization (A) and ammonia concentration variation after urea was infused into the rumen (B). Values are means (n = 4), with error bars representing standard deviation. The asterisks (*) indicate significant (P < 0.05) difference between the control group and the vaccinated group at the time points.Back to article page