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Breeding, Genetics & ReproductionAI Technique Troubleshooting
When conception rates fall, the cause is rarely one thing. Work through the chain from the cow to the semen to the technician, and let your records point to the weakest link.
Key points
- Use your own records to find where the problem begins.
- Check cow health and nutrition before blaming technique.
- Heat detection and timing mistakes are very common.
- Review semen handling and technician method with coaching, not blame.
- Change one thing at a time and track the result.
Start with the data, not a guess
Before changing anything, look at your breeding records. Break results down by technician, by sire, by semen batch, by lactation group and by time of year. A problem that follows one person, one bull or one season tells you where to look.
Compare current numbers with your own past results rather than a number someone else quotes. Ask your vet or reproduction advisor what a reasonable target is for your herd.
Many herd software programs can sort breedings by person and by day with a few clicks. If yours cannot, a simple paper log kept at the breeding station will do, as long as every insemination is written down the same day.
Is the cow ready to breed
Cows that have had a hard calving, retained placenta, uterine infection or other fresh cow problems may not conceive well. Cows in a negative energy state, thin or losing condition quickly, also struggle.
Review the transition program, ration and body condition with your nutritionist. Lameness, heat stress and crowding all lower fertility as well.
Check how cows look at the time of breeding. A cow that is thin, lame or just recovering from illness is less likely to conceive no matter how good the technique is. Treat the whole cow, not only the breeding step.
- Fresh cow disease rate
- Body condition through lactation
- Lameness and comfort
- Heat stress control
Heat detection and timing
Breeding at the wrong time is a leading cause of failure. If you use observed heat, check how often cows are watched, how many signs are used and whether records are accurate. If you use timed programs, check that protocols are followed exactly on the right days and times.
Give the crew written instructions and review them. A missed injection time or a shortcut can ruin an entire group.
Review the signs your crew uses and how often cows are checked. Tail paint, activity monitors or visual observation all work when they are used consistently, and none of them works when they are used only some days.
Semen handling
Poor handling is a frequent hidden cause. Check the tank level, the way straws are lifted, how long they spend out of the tank and how they are thawed. Details are in the guide on semen handling and storage.
Watch a breeding from start to finish. Small habits, like leaving the canister up too long, can add up to lower results.
Technique and the technician
Placement of semen, cleanliness, gentleness and speed all matter. Even skilled technicians benefit from a refresher with an AI service company or a veterinarian. New people should be trained and supervised.
Do not make it personal. Look at results by technician and offer help and coaching. Sometimes a different gun, sheath or process is the difference.
- Clean equipment and perineum
- Gentle, correct placement
- Training and periodic review
- Protected semen between tank and cow
Pregnancy checks and rebreeding
Early, regular pregnancy checks shorten the time a cow stays open. Rebreed open cows promptly according to your plan, and make sure the plan is written down.
Track pregnancy loss as well. If many cows lose a pregnancy after a positive check, talk to your veterinarian about possible causes.
Ask your vet to review pregnancy loss patterns with you. Some losses are random, while others point to disease, nutrition or stress that can be corrected.
Common mistakes
Blaming the semen first, changing several things at once and not keeping records are the most common errors. Another is assuming that because the cows look fine, nothing is wrong.
Change one factor at a time, give it enough breedings to judge, and keep notes. Work with your vet, nutritionist and AI representative as a team.
Sources and further reading
Organization homepages are linked so you can search them for current guidance on this topic.