I have had a couple fat cows not breed the last couple of years,both cows breed on the first service for at least 3 years,so I'm not thinking it's a fertility problem?Anyway the first cow got breed by a neighbors bull and I got mad and aborted her,I wasn't thinking and pulled the bull before she came back in heat.I should have sold her,but I didn't and she got hog fat,so the next year she got serviced three times and didn't take,so I put her in a trap with a bull to see what happened,she got serviced three more times and seems she got breed in late oct as she is getting a nice bag on her now.This year I have cow that her calf fell in pond,she is getting very fat,she got serviced three times buy the bull and is standing today(like a clock every 20 days).Cows are up to date on vacs. So do you guys have problems if cows are to fat breeding in the south during summer mounths?