How can we predict the progeny breeding value?

How can we predict the progeny breeding value?

• A. The average of the parents' breeding values
• B. The sum of the parents' phenotypic values
• C. The environmental deviation
• D. The genetic value of the dam only

Answer: (A)

Additive genetic merit, or breeding value, represents the portion of an individual’s genetics that is reliably passed to its offspring. Because an offspring receives half of its genes from each parent, the additive contribution from each parent to the next generation is integrated in an average way. Consequently, the expected breeding value of the progeny is the mean of the two parents’ breeding values: (BV_sire + BV_dam)/2. This reflects the transmitted additive effects while separating them from environmental effects and non-additive interactions that influence the actual phenotype but not the predictable additive merit. Phenotypes include environmental influences and non-additive gene interactions, so simply adding parental phenotypic values doesn’t reliably reflect inherited additive merit. Relying on only the dam’s genetic value ignores half of the additive input provided by the sire. In practice, breeders use estimated breeding values derived from performance data and pedigree (BLUP/EBV) to predict progeny merit, but the foundational idea remains that the progeny BV equals the average of its parents’ BVs.

Additive genetic merit, or breeding value, represents the portion of an individual’s genetics that is reliably passed to its offspring. Because an offspring receives half of its genes from each parent, the additive contribution from each parent to the next generation is integrated in an average way. Consequently, the expected breeding value of the progeny is the mean of the two parents’ breeding values: (BV_sire + BV_dam)/2. This reflects the transmitted additive effects while separating them from environmental effects and non-additive interactions that influence the actual phenotype but not the predictable additive merit.

Phenotypes include environmental influences and non-additive gene interactions, so simply adding parental phenotypic values doesn’t reliably reflect inherited additive merit. Relying on only the dam’s genetic value ignores half of the additive input provided by the sire. In practice, breeders use estimated breeding values derived from performance data and pedigree (BLUP/EBV) to predict progeny merit, but the foundational idea remains that the progeny BV equals the average of its parents’ BVs.