E161 TPI vs Net Merit: Why Tall, Pretty, and Infertile Cows Are Bleeding You Dry
The Bullvine · The Bullvine
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Show Notes
In this explosive episode of The Bullvine Podcast, host Bella and breeding expert Douglas expose the stark differences between TPI (Total Performance Index) and Net Merit, two competing dairy breeding indexes that are reshaping the industry.
Key Points:
1. Index Evolution: TPI and Net Merit’s correlation has dropped from 0.80 to 0.44, signaling a major shift in breeding priorities.
2. Component Focus: Net Merit 2025 emphasizes butterfat (31.8%) over TPI (28.6%), reflecting market demands.
3. Longevity Impact: Net Merit cows average 4+ lactations vs TPI’s 2.5, translating to $3,000 savings per culled cow.
4. Global Perspective: While the US chases butterfat, the UK’s PLI index prioritizes hoof health, highlighting regional differences.
5. Custom Indexing: Farmers are urged to create personalized indexes, balancing traits like feed efficiency, disease resistance, and livability.
6. Case Study: Rosy-Lane Holsteins’ success with 4.5% butterfat and innovative trait weighting, including milk speed for efficiency.
7. Financial Impact: Custom indexing at Rosy-Lane results in $2.18 million in annual premiums.
8. Time Efficiency: Focus on traits like milk speed can save up to 9 hours daily in large operations.
Takeaway: The episode challenges farmers to move beyond traditional indexes and create custom breeding strategies that prioritize profitability and efficiency in their specific market conditions.