Matty...what age are your bulls and how often do you feed them?
Do you feel they are as healthy as they possibly could be? These are the basic criteria I ask myself before putting my adults away
for breeding consideration. Its easier on most to simply follow the natural temperature cycles of the seasons to elicit breeding behaviors in our animals. I chill my animals in my garage and towards early spring I simply check my animals for increased activity. Some follow a more regimented process with their timing. I'm sure others will pipe in on the subject. Good luck with your project in 2014.

Greg