In influence nematodirozno-paramfistomatoznoy invasion on natural resistance and calves and correction of its preparation Biostim

This article presents the results of experimental studies of the effect nematodirozno-paramfistomoznoy invasion on natural resistance of calves, which resulted in the set which that data helminths parasitizing of calves in the body leads to lower levels of natural resistance that can be adjusted in a positive direction using the drug Biostim.