Breed Smart: 3 Genetic Traps That Kill Calves Ft. Mari Callaway

Cattle Coach Academy - https://www.cattle-coach.com/kolten-landing-pageExpress Livestock Genomics- https://expresslivestockgenomics.comLearn how to use genetic testing and smart mating plans to protect your herd, keep the show look you want, and avoid heartbreaking losses. In this episode we break down the three most‑tested defects in show cattle (TH, PHA, DS), show easy Punnett‑square math you can use for every mating, and explain the real-world risks and strategies breeders use to either eradicate or responsibly retain carrier genes.What you’ll learn in this videoQuick definitions: TH (tibial hemimelia), PHA (pulmonary hypoplasia/anascara), DS (digital subluxation)How each defect behaves (lethal vs non‑lethal) and what that means for calves and pregnanciesSimple Punnett‑square outcomes for Carrier × Carrier, Carrier × Clean, Positive × Carrier matingsWhy DS is different (variable expression) and why DS + PHA can be a dangerous combinationPractical breeding rules: when to test, when to mate carriers, and how to keep desired traits while minimizing riskReal examples, breeder best practices, and lab turnaround expectationsWhy this mattersIf you buy bulls, semen, or embryos — or if you’re building a show herd — understanding TH, PHA and DS is essential. These defects affect fertility, calf survival, conformation, and can even cause late‑term abortions. Testing and planned matings protect your herd’s welfare and your bottom line.TH, PHA, DS, tibial hemimelia, pulmonary hypoplasia, digital subluxation, carrier, lethal gene, Punnett square, genetic testing, show cattle genetics, breeding strategy, Express Livestock GenomicsTimestamps (approx.)0:00 Intro & why testing matters1:10 TH explained — genetics & outcomes6:20 PHA explained — pregnancy risks & outcomes10:30 DS explained — prevalence, expression & risks16:00 DS + PHA interactions & why this pairing is risky19:40 Practical mating rules & Punnett‑square examples23:00 How to use carriers responsibly in show programs26:30 How & where to get tested + lab turnaroundIf you’re buying genetics (bulls, semen, embryos) — ALWAYS test before you buy and plan matings using the sire/dam genotypes.Mentioned resources / partnersBullnanza Stud Services — semen collection, housing & custom bull services: https://bullnanza.com/QB Cattle Company — Kolten Thigpen’s QB Cattle program & sales: https://qbcattle.comExpress Livestock Genomics — genetic testing for TH, PHA, DS (fast turnaround): https://expresslivestockgenomics.comIf this video helped you: please Like, Subscribe, and hit the bell so you don’t miss future breeding strategy episodes! Share with a friend who’s buying bulls or planning matings this season.Questions? Drop them below — genotype data, mating scenarios, or requests for a downloadable planning sheet and I’ll help.