Pastor Dave
Herd Master
Yah, if it's hot enough the buck lays around cooling himself down by exposing his man parts, could be sterile, but if mine have not done it a lot, don't seem stressed, or it cools back off some, I've had pretty good success. The frozen 3liter bottles of water to lay in with them helps quite a bit too. I try not to breed in the heat of summer, but have broken my own "rules" too. 
