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机构地区:[1]甘肃省畜牧兽医研究所,西北农业大学动物科学系
出 处:《畜牧兽医学报》1998年第1期33-38,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA
摘 要:在甘肃黑猪本品种继代选育群中(Ⅰ系),由于选择与近交的作用,3世代在Pa位点发生了较大的遗传分化,PAa的固定指数为0.10998,Shannon信息指数为0.57461,比1世代下降了8.13%,纯合度为0.5319。导入杜洛克血液类群中(Ⅱ系),在PA0、TfB位点发生了较大的变异,纯合度0.4736。探讨了多态性位点在品种与品系间的交叉问题。オrotein polymorphisms at 6 loci in blood were investegated with polyacrylamide gel electrophoresis in line Ⅰ (systematic breeding group) and line Ⅱ (infusion of 1/4 Duroc blood) in Gansu Black Pig.The results showed that the fixation indexes of line Ⅰ at PAa locus was 0.10988 and the shannon information index at Pa locus was 0.57461,indicating that there was a big differentiation at Pa locus in generation 3 of line Ⅰ,due to the combined effect of inbreding and selection.Homogeneity of generation 3 in line Ⅰ was 0.5319,and the homogeneity in line Ⅱ was 0.4736.
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