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In regards to pedigrees, what is an RHA?

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In regards to pedigrees, what is an RHA?

(a) Rolling Herd Average

(b) Registered Herd Ancestry

(c) Registered Holstein Ancestry

(d) Registered Herd Average

The question was posed to me during an internship interview.

Asked question is from Cattle Health in section Cattle Health of Dairy Engineering

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The correct option is (c) Registered Holstein Ancestry

The explanation is: RHA is Registered Holstein Ancestry. Each animal in the herd book has a calculated, recorded and reported percentage “Registered Holstein Ancestry” or “RHA.”

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