TCI Transcervical Insemination Probe Kit for Dogs
TCI Transcervical Insemination Probe Kit for Dogs
If you're working with frozen semen or running a serious breeding program in English Bulldogs, French Bulldogs, or American Bullies, transcervical insemination gives you conception rates that vaginal AI simply can't match. TCI places semen directly into the uterus — no surgery, no anesthesia, no recovery time — and it's become the standard method for frozen semen breeding in professional programs.
What Is TCI?
Transcervical insemination (TCI) is a non-surgical method of depositing semen directly into the uterus by passing a flexible endoscope through the cervix. Unlike vaginal AI, which deposits semen in the anterior vagina and relies on semen transport through the cervix, TCI bypasses the cervix entirely. This is critical for frozen semen, where post-thaw motility is lower and the semen needs to be as close to the eggs as possible to maximize conception rates.
TCI vs. Vaginal AI — When to Use Each
| Factor | Vaginal AI | TCI |
|---|---|---|
| Semen type | Fresh or fresh-chilled | Frozen-thawed or fresh-chilled |
| Conception rates (frozen semen) | 30–50% | 60–80% |
| Anesthesia required | No | No |
| Surgery required | No | No |
| Learning curve | Low | Moderate — requires practice |
| Best for | Natural or chilled semen | Frozen semen, imported genetics, bully breeds |
Why TCI for Bully Breeds?
English Bulldogs, French Bulldogs, and American Bullies have anatomical characteristics that can make cervical passage more challenging. TCI eliminates that variable entirely — the semen goes exactly where it needs to go, every time.
What's Included
- TCI endoscope probe (flexible, with light source)
- Semen-safe insemination catheter
- Sterile collection syringe
- Instruction guide
Note: A light source may be required separately depending on kit configuration — confirm at checkout or call (713) 992-4822.
Experience Level
TCI has a moderate learning curve. Most breeders are comfortable after 3–5 procedures. Call us at (713) 992-4822 — we're happy to walk you through the process.
Frequently Asked Questions
Do I need a vet to perform TCI?
In most U.S. states, TCI can be performed by a trained breeder — it is non-surgical and does not require anesthesia. Regulations vary by state, so check your state's veterinary practice act before performing TCI independently.
What's the difference between TCI and surgical AI?
Surgical AI requires general anesthesia and a laparotomy incision. TCI achieves the same uterine deposit without surgery or anesthesia by passing a scope transvaginally through the cervix. TCI is preferred because of lower risk, faster recovery, and equal or better conception rates.
Can I use TCI with fresh-chilled semen?
Yes. TCI works with fresh, fresh-chilled, and frozen-thawed semen. It's most commonly used with frozen semen because the conception rate advantage is largest, but TCI with chilled semen is also common in programs wanting maximum consistency.
When in the cycle should I perform TCI?
For frozen semen: 48–72 hours post-ovulation (progesterone at 10+ ng/mL), when oocytes are fully mature. For fresh-chilled: 24–48 hours post-ovulation. Always confirm ovulation with progesterone testing — never time by behavior alone.
What progesterone level before TCI with frozen semen?
Target 10–25 ng/mL, with 48+ hours confirmed since ovulation. If testing in-house with the Wondfo FIA system, look for a value above 10 ng/mL that has been stable or rising for 48+ hours.