Which type of EPD is based solely on pedigree data?

Which type of EPD is based solely on pedigree data?

• A. Pedigree Estimated EPD
• B. Non-Parent EPD
• C. Parent EPD
• D. Genetic Trend

Answer: (A)

The type of Expected Progeny Difference (EPD) that is based solely on pedigree data is known as the Pedigree Estimated EPD. This type of EPD utilizes information about the ancestry of an animal to make predictions about its genetic potential, without relying on performance data from the individual itself or its offspring. Pedigree data includes the genetic performance of the animals in the ancestry, which provides insights into the expected traits of the offspring.

In contrast, Non-Parent EPDs take into account the estimated breeding value of individuals that have not yet produced offspring, which includes additional performance data rather than just pedigree. Parent EPDs are calculated using data from the animal and its direct progeny, offering a more direct estimation of the genetic contribution of an individual rather than relying solely on pedigree. Genetic Trend, on the other hand, refers to the overall improvement or change in a given trait over time in a population, which does not fit the criteria of being based solely on pedigree data. Thus, Pedigree Estimated EPD is the correct choice.