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ID 10578
Eprint ID
10578
フルテキストURL
Thumnail 93_59_65.pdf 1.08 MB
タイトル(別表記)
実際の遺伝的パラメータ,育種目標の変更を仮定した場合での3集団モデルの遺伝的有利性
著者
及川 卓郎 岡山大学
松井 宏吉 岡山大学
佐藤 勝紀 岡山大学
抄録
Breeding efficiency was compared among three population schemes; a single population, a population with two sub-populations and a population with three sub-populations when sets of realistics genetic parameters were assumed, and when breeding objectives were changed in the middle of selection program. A simulation experiment of selection was carried out for 10 generations with 20 replications each by comparing average breeding values and inbreeding coefficients among the three population schemes. Genetic gain of growth trait was the largest, then that of meat quality trait was the second largest, and that of reproductive trait was the smallest. The amount of the genetic gain was dependent on their genetic variance. Among the three population schemes, the single population scheme had similar genetic level with the other two schemes under a selection with same economic weights for the traits, however, the multiple sub-populations scheme had the highest genetic level after crossbreeding between sub-populations when inbreeding depression was assumed. The population shceme with three sub-populations can enjoy full advantage of heterosis when different economic weights were applied to the traits. The change of breeding objective made impact on genetic gain of population scheme when different economic weights were applied to the traits, where the population scheme with three sub-populations had higher genetic than the older population schemes.
キーワード
Computer simulation
Selection
Crossbreeding
Population structure
発行日
2004-02
出版物タイトル
岡山大学農学部学術報告
出版物タイトル(別表記)
Scientific reports of the Faculty of Agriculture, Okayama University
93巻
1号
出版者
岡山大学農学部
出版者(別表記)
Faculty of Agriculture,Okayama University
開始ページ
59
終了ページ
65
ISSN
0474-0254
NCID
AN00033029
資料タイプ
紀要論文
言語
English
論文のバージョン
publisher
査読
無し
Eprints Journal Name
srfa