we had some much better luck the last few months though.It seems to be either all one or the other for long periods of time.Did you ever try sorted AI bulls?If you can get decent conception,I hear very positive results.Over 90 percent heiffer calves all the time.I always found if you're using a clean up bull,they usually have heiffer calves too.The bull gets them bred at standing,AI usually occurs about 12 hours after standing.They say the x's are faster than y's but die off much quicker.If conception time isn't quite there yet,the x's die off and when it's time to work,there are fewer of them resulting in more heiffer calves.But conception is higher 12 hours later,but the x's stand a better chance with AI.We are using some genomically tested sorted young bulls abit now,hoping it'll help so long as they catch.
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