|J. Chin. Soc. Anim. Sci. 33(Suppl.)|
廖仁寶(1) 黃鈺嘉(1) 賴永裕(1) 張秀鑾(2) 吳明哲(1)
在豬隻第八號染色體上平均地選擇15個微衛星型遺傳標記，此15個標記在第八號染色體連鎖圖譜約佔130分摩根（cM），用以篩檢242頭種母豬DNA基因型。所分析之產仔性狀有三種，包括總產仔數、活仔數及仔豬存活率。基因型檢測結果顯示每個遺傳標記之交替基因分布，皆有品種間的差異。以一般線性模式和最小平方法分析母豬個別遺傳標記交替基因與其產仔性能之結果顯示：一些標記交替基因與四個品種母豬的產仔性能有極顯著相關並具正效應。例如KS188-B8對藍瑞斯母豬具有正效應，同時，KS141-B2與KS168-B3對約克夏母豬和KS148-B2, -B5, -B8、KS192-B5、KS141-B1、KS140-B3對杜洛克母豬及SW1843-B1, -B9、SW61-B15對盤克夏母豬具有正效應。同樣地，不同品種母豬具有某些交替基因，其產仔性能則會比未具有該交替基因者差。
ASSOCIATION STUDY BETWEEN MICROSATELLITE
MARKERS ON SWINE
CHROMOSOME 8 AND THE LITTER PERFORMANCE OF PAROUS SOWS
R. B. Liaw(1), Y. C. Huang(1), Y. Y. Lai(1), H. L. Chang(2) and M. C. Wu(1)
(1) Livestock Research Institute, Council of Agriculture,
(2) Department of Animal Science, National Pingtung University of Science and Technology
A total of fifteen microsatellite markers averagely spread on swine chromosome 8 (SSC8) were used to genotype 242 parous sows, including Landrace, Yorkshire, Duroc and Berkshire breeds. These markers spanned about 130 cM on the linkage map of SSC8. Three traits including litter size at birth and born alive as well as the corresponding survivability of piglets were considered in this study. The result indicated that there were significant breed effects existed in the distribution of allele frequency for all markers analyzed. The general linear model via least-squared method was further applied to study the relationship between litter performances described above and the presence of individual allele for parous sows in Landrace, Yorkshire and Duroc breeds. Both positive and negative effects of alleles on sows’ performances were observed. For example, the marker-allele groups (KS188-B8), (KS141-B2 and KS168-B3), (KS148-B2, -B5, -B8, KS192-B5, KS141-B1, and KS140-B3), and (SW1843-B1, -B9, and SW61-B15) were beneficial for Landrace, Yorkshire, Duroc, and Berkshire sows, respectively. However, alleles with inferior effects on sows’ litter performances were also found in this study.
Key Words: Microsatellite marker, Linkage map, Litter performance.