Semen Extenders & Collection

Every time you ship chilled semen without a quality dog semen extender, you're gambling with the litter. Semen quality degrades rapidly after collection — oxidative stress, pH changes, and temperature fluctuations all attack motility within hours. The right extender neutralizes those threats and keeps your semen viable for the full transport window, whether you're shipping across the state or across the country.

This collection features BullGen™ 10-Day Canine Semen Extender — our professional-grade formula engineered to extend semen viability for up to 10 days by protecting against oxidative stress that kills progressive motility in transit. Pair it with the BullGen™ Semen Enhancer to boost motility and viability before insemination, and the BullGen™ Female Vaginal Flush to optimize the environment before AI. Alongside the extenders, you'll find the collection supplies that complete the process: Collection Cones for clean, contamination-free collection, and Semen Collection Bags for secure packaging.

Chilled semen shipping has become standard in American Bully, English Bulldog, and French Bulldog programs — but the technique only works when the extender works. Everything in this collection has been field-tested by working breeders in active stud programs. For a step-by-step breakdown of the collection and shipping process, see our chilled semen shipping protocol. Questions about your specific situation? Call or text (713) 992-4822.