Dairy Wellness Profit $ and Wellness Trait $ indexes
The Dairy Wellness Profit $ and Wellness Trait $ indexes may have you wondering whether you should adjust your genetic plan to include this new information. Here we have answers to 14 questions to help you decide what’s best for your dairy to make the maximum genetic progress in the direction of your goals!
What is Dairy Wellness Profit $ (DWP$) and Wellness Trait $ (WT$?)
WT$ is a combination of the Wellness Traits (Ketosis, Displaced Abomasum, Retained Placenta, Metritis, Mastitis and Lameness). This means it is an index analogous to a 0-100-0 index, with 100% weight on health traits. However, those weights are divided between the various Wellness traits that Zoetis calculates.
Do each of the Wellness Traits get their own evaluation?
Yes. They are then combined into a Wellness Trait $ index to combine the expected impact.
How is Dairy Wellness Profit $ (DWP$) compiled?
Dairy Wellness Profit $ (DWP$) is a genetic selection index that equates to a genetic plan of 34% Production – 56% Health – 10% conformation. This differs from TPI (46-28-26) and the overall NM$ index (43-41-16).
The breakdown of the weight on health is different as well. DWP$ puts 30% of the weight on WT$, leaving 26% for the CDCB evaluated health traits of PL, DPR, SCS, DSB, DCE, CCR, HCR.
Are the Wellness traits developed by Zoetis?
The WT$ calculation is not a new concept, as it was first published in 2004, however this is the first routine evaluation and first genomic prediction for those traits.
Did Alta test all bulls for DWP$ and WT$?
No, but we tested the sires that we predicted would do well on the respective indexes based on their health trait values and how they rank on a 34% Production-56% Health-10% Conformation index. We are listing the top ten DWP$ sires and top five WT$ bulls in each of three categories: G-Stars, FutureStars and daughter-proven sires.
What is Alta’s testing plan going forward?
This will be dependent on the feedback from the customers and the demand for this information. In the short-term we will continue to test those sires that rank well on a traditional 34-56-10 index.
How can we predict which sires will do well on these indexes?
Because the correlation between DWP$ and a traditional 34-56-10 index is very high, we can predict quite well which sires will rank well on the DWP$ index.