Podcast Episode Notes: "Genetic Shakeups & Dairy Breakthroughs: April 2025 Evaluation Highlights"

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Key Topics

Introduction

- Overview of April 2025’s landmark genetic evaluations

- Why this month’s base changes matter for global breeding strategies

US Holstein Evaluations: The Great Genetic Reset

- Production PTAs: Milk (-750 lbs), Fat (-45 lbs), Protein (-25 lbs)

- Elite Survivors: RIPCORD (NM$1125) and DARTH VADR (NM$1118) retain top spots.

- Inbreeding Alert: EFI up 28% since 2015—prioritize genomic relationship tools.

Canadian Sire Shakeups: Balanced Breeding Wins

- Genomic Leader: OCD MONKEY-ET (GLPI 4079) excels in fat yield (+125kg) and udder health.

- Daughter-Proven Star: S-S-I PR RENEGADE-ET (LPI 3850) dominates longevity (+4.2).

- Trend to Watch: Polled genetics gain traction (e.g., FRAHOLME VEC TRITON-PP).

Fertility Traits: Global Strategies Compared

- US: New Fertility Index prioritizes Cow Conception Rate (CCR) over DPR.

- Germany: RZR index links fertility to metabolic health (e.g., -15% calving intervals).

- Canada: Multi-trait approach reduces stillbirths by 9% in 5 years.

Inbreeding Alert: Hidden Risks in Your Herd

- Critical Stat: Holstein EFI now 9.4% (vs. 7.5% in 2015).

- Profitability Impact: Every 1% EFI increase = $12/heifer/year loss.

- Solution: Use genomic mate pairing (e.g., Semex’s Mating Service).

Actionable Insights for Breeders

1. Leverage Base Changes: Compare sires using percentile ranks, not raw PTAs.

2. Diversify Genetics: Incorporate polled or red-carrier sires to curb inbreeding.

3. Fertility Focus: Match metrics to your herd’s needs (e.g., CCR for problem breeders).

Closing Thought

“Genetic progress isn’t just about chasing numbers—it’s about building resilient herds that thrive in tomorrow’s dairy economy.”

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