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Effects of a breeding scheme combined by genomic pre‐selection and progeny testing on annual genetic gain in a dairy cattle population
Author(s) -
Yamazaki Takeshi,
Togashi Kenji,
Iwama Satoru,
Matsumoto Shigeo,
Moribe Kimihiro,
Nakanishi Takatoshi,
Hagiya Koichi,
Hayasaka Kiyoshi
Publication year - 2014
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.12186
Subject(s) - genetic gain , breed , zoology , selection (genetic algorithm) , biology , population , dairy cattle , progeny testing , microbiology and biotechnology , genetic variation , genetics , gene , medicine , computer science , environmental health , artificial intelligence
The effectiveness of the incorporation of genomic pre‐selection into dairy cattle progeny testing ( GS‐PT ) was compared with that of progeny testing ( PT ) where the fraction of dam to breed bull ( DB ) selected was 0.01. When the fraction of sires to breed bulls ( SB ) selected without being progeny tested to produce young bulls ( YB ) in the next generation was 0.2, the annual genetic gain from GS‐PT was 13% to 43% greater when h 2 = 0.3 and 16% to 53% greater when h 2 = 0.1 compared with that from PT . Given h 2 = 0.3, a selection accuracy of 0.8 for both YB and DB , and selected fractions of 0.117 for YB and 0.04 for DB , GS‐PT produced 40% to 43% greater annual genetic gain than PT . Given h 2 = 0.1, a selection accuracy of 0.6 for both YB and DB , and selected fractions of 0.117 for YB and 0.04 for DB , annual genetic gain from GS‐PT was 48% to 53% greater than that from PT . When h 2 = 0.3, progeny testing capacity had little effect on annual genetic gain from GS‐PT . However, when h 2 = 0.1, annual genetic gain from GS‐PT increased with increasing progeny testing capacity.