Property of Difference between Two Predicted Breeding Values from BLUP Methodology
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- OYAMA Kenji
- Faculty of Agriculture, Kobe University
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- OTANI Shinji
- Graduate School of Science and Technology, Kobe University
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- MUKAI Fumio
- Faculty of Agriculture, Kobe University
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説明
A method to compare predicted breeding values (PBVs) between 2 animals was derived and its efficiency was examined through computer simulation. The method simply utilized the property of t-test of difference and called "observed t-value" in contrast with "true t-value" which was based on true breeding values. The simulated population consisted of 4 generations and each generation contained 200 animals. When no selection was applied to the population, observed t-value was similar to true t-value and agreed with theoretical distribution. However observed t-value showed larger variance than true t-value when animals were selected by phenotype or PBV. Generally observed t-value underestimated true one within generations and overestimated it between generations. Since the under- and over-estimation would be improved as the heritability increased, the application of the observed t-value should be limited to the moderately or highly heritable traits and also to animal pairs in the current population.
収録刊行物
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- 日本畜産学会報
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日本畜産学会報 70 (5), 268-272, 1999
公益社団法人 日本畜産学会
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詳細情報 詳細情報について
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- CRID
- 1390282680173221376
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- NII論文ID
- 130000742864
- 10020392616
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- NII書誌ID
- AN00195188
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- ISSN
- 18808255
- 00215309
- 1346907X
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- NDL書誌ID
- 4858882
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可