“These are the times that try men's souls.” | I use two doses of SourGaurd 4 K/C on first calf heifers and dairy and beef. Then one yearly dose at dryoff time on milk cows. I feel it sure helps prevent problems. Never tried any other brands of vaccine other than Pfizer. I thought the First Defense stuff was a tube that you squirted in calf's mouth right after birth? Didn't know they made boluses. |
Scour vaccines
