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題 名 | 豬肋骨對數基因之定位=Gene Mapping for Porcine Rib-pair Number Loci |
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作 者 | 廖仁寶; 張秀鑾; 賴永裕; 劉錦條; 顏念慈; 劉振發; 吳明哲; | 書刊名 | 畜產研究 |
卷 期 | 39:2 民95.06 |
頁 次 | 頁131-138 |
分類號 | 437.653 |
關鍵詞 | 豬; 肋骨對數; 微衛星型標記; Swine; Number of rib pairs; Microsatellite marker; |
語 文 | 中文(Chinese) |
中文摘要 | 屠體長是豬種改良重要經濟性狀之一,且其與肋骨對數具有相當程度的正相關,因此,本研究利用肉豬屠體肋骨數最多與最少之肌肉樣品進行基因定位。應用分布於第一號染色體(11種)、第二號染色體(1種)、第六號染色體(1種)、第七號染色體(2種)、第10號染色體(1種)及第17號染色體(1種)等25種遺傳標記,檢測肉豬屠體為14對或17對肋骨數的肌肉樣本。經卡方分析顯示:肋骨對數與第一號染色體上的SW1824、SW1514、S0316及ESR和第七號染色體上的SW1122、SW252、SW1380及S0115有顯著的相關性,推測第一號染色體短臂的1p2.4-2.5與第七號染色體長臂的7q2.4-2.5區域可能含有控制肋骨對數的基因座。此外,藍瑞斯與盤克夏正反雜交豬後代具14對和17對肋骨數的豬隻頻率最低(<5%),具16對者則佔多數(54.6%)。左右側肋骨數不等的情形,其發生比率為4.6%(6/130),故肋骨對數可能非單一基因座所控制。 |
英文摘要 | Carcass length is one of the important economic traits in swine breeding and has positive relationship to the number of ribs. Therefore, we used the hog samples with extreme number of ribs to map the relative genes n this study. A total of 25 porcine microsatellite markers located on chromosome 1 (11 markers), chromosome 2 (1 marker), chromosome 6 (1 marker), chromosome 7 (8 marker), chromosome 2 (2 marker), chromosome 10 (1 marker), and chromosome 17 (1 marker) were used to genotype muscle samples of hogs having 14 or 17 pairs of ribs. The results of chi-square test between markers and number of rib pairs indicated that number of rib pairs and markers SW 1824, SW 1514, S0316, ESR, and S0316 on chromosome 1 and SW1122, SW252, SW1380, and S0115 on chromosome 7 were significantly related, respectively. By this, there were probably gene loci for number of rib pairs on porcine chromosome 1p2.4-2.5 and 7q 2.4-2.5. In the investigation of carcass traits of hybrids F1 and F2, the frequencies of the pigs with 14 and 17 rib pairs were in a tiny minority ( < 5%), but those with 16 rib pairs were in the majority (54.6%). Besides, the asymmetry of left and right rib pairs were found in the study and the frequency was 4.6% (6/130). We concluded that the trait of number of rib pairs was probably regulated just by one single gene. |
本系統中英文摘要資訊取自各篇刊載內容。