GUARDIAN
MERCK ANIMAL HEALTH
Rotavirus, Coronavirus, Clostridium perfringens Types C and D, and K99 E. coli. Vaccinate pregnant cattle to provide scour protection to calves through the colostrum. Give 2 mI SQ 3 months prior to calving. Repeat in 3-6 weeks. Booster annually, 5-7 weeks prior to calving.