A herd sire is a bull that we use in our herd for breeding our cows. Herd sires play a large role in the genetics of our cattle program and therefore selecting a bull is a very important decision in our operation.A bull contributes 50% of the genetic makeup of each generation of offspring and the cows together contribute the other half.  If you think of it this way, we retain heifers from our own herd for replacement cows, so 75% of the genetic makeup of their offspring will be from the ... VIEW POST