We are careful to limit the mount of meat/protein he gets because too much causes an excess of ammonia in his body, and when the ammonia rises, we also see behavioral problems. Not surprisingly, too much ammonia can interfere with fertility.
Here's this from the U.K. Daily mail:
Avoid eating large quantities of red meat, which can increase the amount of ammonia in our bodies. Too much ammonia can interfere with the implantation of the egg in the uterus. Too much rich protein may also increase the body's acidity and affect sperm activity. Sperm are at their most efficient in alkaline conditions.There plenty more tips in this article, The Fertility Diet, lots of them that I won't repeat because they've already been covered here! But if you want to read more, click here.