Hello,
We hav ebeen doing ET for many many years
all that has been said above is true
We raise our own recips, recips should be awesome commercial females cappable of having a largecalf and have good udder cappacity
You can avoid disease transmition only by disease screening your females prior to transplant "Period"
Beef females can transmit all the same diseases as dairy animals
One key point I see that everyone has neglected is nutrition, prior to transplant, having recips in a good plane of nutrition such as high 4 to 5 BCS, a good quality loose mineral program and good herd health managment, such as fly control, worming and vaccination program will greatly affect the quality of your results,
With all the above you can have very high success with a skilled tech who has their head on the quality of your programs results, if your tech does not care how good your results are, you can bet the results will be very poor, I have experienced both cases