The increased use of beef sires on dairy cattle has raised questions on the relative fertility of beef versus dairy sires. Since 2008, dairy producers have had access to sire conception rate data. Similar information has not been available in the expected progeny differences published for beef sires for which a different scoring is used.
A 2020 study by McWhorter et al. looked at sire conception rate and found a similar SCR between Angus and Holstein sires, but a lower reliability for Angus sires due to fewer matings. The author noted some nuances to consider in sample size differences and data capture.
Source: The Bullvine, September 20, 2021. Link.
The mean conception rates for Angus sires used on Holstein cows and Holstein sires on Holstein cows were similar at 33.77 percent and 34.29 percent, respectively. The mean conception rates for Angus on Holstein and Holstein on Holstein were 52.96 percent and 55.34 percent, respectively.