第四十三卷(2014)
畜試土雞高產蛋品系L7之微衛星遺傳標記多樣性分析
林德育(1) 曾淑貞(2) 林義福(1) 賴永裕(1) 張秀鑾(3) 吳明哲(1)
(1)行政院農業委員會畜產試驗所 (2)中華醫事科技大學 (3)國立屏東科技大學
畜試土雞高產蛋品系L7係以行政院農業委員會畜產試驗所畜試土雞台畜一號近親品系L7為基礎族群，進行6個世代產蛋數選育所育成的品系。為評估高產蛋品系L7選育族群的遺傳變異，本試驗利用FAO(2004)建議使用的23組雞微衛星標記組，以及LEI0258微衛星標記組，共24組微衛星標記組分析該族群候選種雞80隻之個體DNA。其中除MCW0216微衛星標記所檢測的基因型在所有檢測個體皆為單型外，其它23組微衛星標記皆有多態型的基因型。共檢測到80個對偶基因，平均每個基因座具有3.3個對偶基因(1~7個)，其期望異質度介於0到0.737，平均為0.42，觀測異質度介於0到0.850，平均為0.42，而多態性訊息含量平均為0.37。在選用的24組微衛星標記組中有7組呈現高度多態性資訊(PIC ≥ 0.5)，有11組呈現中度多態性資訊(0.5> PIC ≥ 0.25)，6組呈現低度多態性資訊(PIC < 0.25)。本結果提供此選育族群遺傳變異之基本分子資訊。
關鍵語：土雞、遺傳多樣性、微衞星標記
GENETIC DIVERSITY ANALYSIS OF HIGH EGG PRODUCTION LINE L7 NATIVE CHICKEN IN LRI-COA BY MICROSATELLITE MARKERS
D. Y. Lin(1), S. J. Tzeng(2), Y. F. Lin(1), Y. Y. Lai(1), H. L. Chang(3) and M. C. Wu(1)
(1)Livestock Research Institute (LRI), Council of Agriculture (2)Chung Hwa University of Medical Technology (3)National Pingtung University of Science and Technology
LRI high egg production line L7 native chicken, which was selected for number of egg based on the inbreeding line L7 native chicken of Council of Agriculture Livestock Research LRI for six generation. To assess the genetic variability of high egg production line L7 breeding population, we use a set of 24 microsatellite markers to analyze 80 candidate bred chickens from this flock. Except MCW0216, all the microsatellites were polymorphic. The average allelic number was 3.3, ranged from 1 to 7 per locus. The expected heterozygosity ranged from 0 to 0.737, and the average expected heterozygosity was 0.42±0.19 (mean ±SD). The observed heterozygosity of the population ranged from 0 to 0.850, and the average observed heterozygosity was 0.42±0.23. The estimated average polymorphic information content (PIC) was 0.37±0.17. In 24 markers, seven markers were highly informative with polymorphism information content (PIC ≥0. 50), eleven markers were reasonably informative (0.5> PIC≥ 0.25) and the other six markers were slightly informative (PIC < 0.25). These results could be provided basic molecular information for the research on the germplasm characteristics of high egg production line L7 native chicken in LRI-COA.
Key Words: Native chicken, Genetic diversity, Microsatellite marker
  
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