- Location
- Ceredigion, wales
I think Blue bulls tend to be a bit lethargic when working on concrete. The very same bull works perfectly well on the spring calvers whilst outdoors.I'd say the greatest majority of bull fertility problems we see are blues. They generally have smaller testicles for their size (the society even recommended lower scrotal circumference measurements) and we know that larger testicles mean more sperm and the ability to inseminate more cows.