The field of dairy cattle genetics uses two “languages”, Predicted Transmitting Ability (PTA) and Breeding Value. Evaluations from the US are expressed in PTA’s while most other countries use Breeding Values. What are the differences, and what implications does this have?
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Conformation and PTAT: What are the Differences? |
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Feet and Legs: It’s Complicated! |
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Recumbency: Calves that Can’t Stand Up |