E667 Logic-PP’s August 2026 Proof: 3909 LPI, and Two PP Sons Out of His Own Half-Sister

With Logic-PP hitting 3909 LPI, polled genetics have caught the breed's elite, but two of his PP sons carry a 12.5 percent shared-dam loop. The Bullvine Podcast traces Luster-P’s influence down to Canada's top three proven bulls. We dissect the Lambda Leysure P half-sibling mating to show why the biggest question isn't whether polled bulls are good enough, but how closely related they are to your cows.

What You Will Learn

• Why Logic-PP's 3909 LPI and extreme components make him a top proven sire

• How a half-sibling mating concentrates the Lambda Leysure P bloodline

• Why the 12.5 percent pedigree loop forces you to screen Logic's PP sons

• How Launch-PP-Red and Simon-P offer distinct genetic alternatives

• Why the $4.17 per straw break-even for PP semen undercounts 2026 labor costs

The polled debate is over at the top of the rankings with Logic-PP delivering +124 kg of fat and +43 kg of protein, proving you don't have to sacrifice production to avoid the hot iron. But line-bred pedigrees mean blindly using PP sires like Unleash-PP could spike your herd's inbreeding coefficient, forcing you to run the relationship check son by son before paying the polled premium.

Full article and sources: https://www.thebullvine.com/genetics-breeding/drewholme-logic-pp-proof/ Subscribe for straight-talking dairy analysis. Share this with a producer who needs it.