Posted 12/13/2010 21:14 (#1484493 - in reply to #1484157) Subject: Re: How do the big breeding stock operations do it?
WY, OK
Jim - 12/13/2010 17:18
A beginner's question: If you put the cleanup bull in just a couple days after the AI how can you tell for sure which bull she was bred to? (for registration) or are these commercials?
Jim at Dawn
There could be a question on a few because the end of that first heat cycle that you AI'd will run into the early calvers for that second heat cycle. Ours are commercial so it doesn't matter, plus we AI'd with a Hereford and cleaned up with red Angus so we will know the exact numbers. You can also tell an AI calf if he is something radically different from what you use. Back when we used Charolais you could tell the AI from a mile away just because the bull was such a different blood line.
You could wait 10 days for a cleanup since nothing would be coming back into heat until after that. Everything I have researched says the worst days to haul are something like day 5-9 and then again in the 40's. We've AI'd and hauled within 2 days for 3 years now and get over 60% so I have a hard time believing it hurts anything in those first few days, plus just the heifers running around in the pasture are going to be just as much of a jolt on the body.
How do the big breeding stock operations do it?
