Bias in Proofs of Non-random Used Sires

Authors

  • Irma Johanna Pauline Vermeer CRV
  • Jorien Vosman CRV
  • Gerben de Jong CRV

Keywords:

Elite, Bulls, Embryo transfer, Bias

Abstract

Selling sperm of genomic elite bulls for high prices, is something that can be seen more and more in the industry. Because of the high prices, these genomic bulls are mated with the best of the available heifers and cows, mostly in the form of embryo transfer (ET). Furthermore, offspring of these young genomic bulls possibly don’t receive the same treatment as livestock with less potential would receive. The consequence of using these bulls non-randomly, can be an overestimation of the (first) breeding value(s) of the bull.
In this study no obvious effects were found of the percentage of daughters born from embryo transfer on the breeding values of the bull. The results even suggest a very mild underestimation of the breeding values which have the highest percentage of daughters born from embryo transfer, not an overestimation.

Author Biographies

Irma Johanna Pauline Vermeer, CRV

Animal Evaluation Unit

Jorien Vosman, CRV

Animal Evaluation Unit

Gerben de Jong, CRV

Animal Evaluation Unit

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Published

2017-09-29

Issue

No. 51 (2017): Proceedings of the 2017 Interbull Meeting

Section

Articles

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