We tried a different, cheaper source for heifer bulls a few years back. Needed 8 new bulls and found some reds that were supposedly from a 50 year old herd that specialized in light bw cattle, had two older black bulls from our usual source to back them up. Bred 210 heifers, 30 open in 35 days, bulls looked the part and stayed together through the first winter.
Calves started coming, pulled 60%, many over 90 lbs from our little 950 to 1050 lb heifers. Some were so big we didn’t see any activity from the heifer until cotyledens started showing. Several c sections.
I think we ended up shipping 25 dry heifers out of the 180. Bull suppliers were nice enough to pay for DNA testing on all eight bulls and 40 of the heaviest calves. Much to their delight they thanked me for finding out a new bull that had sired 4 of the ones we had bought was the culprit.
We needed some new heifer bulls this year and went back to the bulls we knew will work. Double the price but a percentage of the work and way more calves to sell.