In this study, five immune traits including immunoglobulin G (IgG), delayed-type hypersensitivity (DTH), leukocyte counts (WBC), total erythrocytes (RBC) and total protein in serum (TP) were measured in Tong...In this study, five immune traits including immunoglobulin G (IgG), delayed-type hypersensitivity (DTH), leukocyte counts (WBC), total erythrocytes (RBC) and total protein in serum (TP) were measured in Tongcheng pigs, Swedish Landrace, British Large White and two three-way crossbreds of Landrace× (Large White×Tongcheng), Large White×(Swedish Landrace×Tongcheng). Tongcheng pigs had the highest values of IgG (45.04 mg/mL),DTH (8.87mm),RBC (7.05×1012/L) and TP (66.69 g/L) among these five pig populations. RBC had positive heterosis in these studied pigs and other four immune traits had negative heterosis. There were significantly positive correlation between IgG and DTH (r=0.33, P<0.01), IgG and TP (r=0.27, P<0.01), DTH and TP (r=0.25, P<0.01).展开更多
旨在基于SNP芯片信息分析通城猪保种群的群体结构和遗传多样性,对保种效果进行监测。本研究利用“中芯一号”50KSNP芯片对68头通城猪的全基因组SNP进行扫描,通过以下两方面评估保种效果:1)群体结构。通过群体分层、遗传距离、亲缘关系...旨在基于SNP芯片信息分析通城猪保种群的群体结构和遗传多样性,对保种效果进行监测。本研究利用“中芯一号”50KSNP芯片对68头通城猪的全基因组SNP进行扫描,通过以下两方面评估保种效果:1)群体结构。通过群体分层、遗传距离、亲缘关系以及公猪基因组家系等分析,研究通城猪个体间的群体结构;2)遗传多样性。估算等位基因频率、有效等位基因数、多态信息含量、多态性标记比例、杂合度、核苷酸多样性等多态性和杂合性相关参数估计遗传多样性,分析有效群体含量和连续性纯合片段(runs of homozygosity,ROH),综合评估保种效果。结果显示:1)保种群无明显分层,遗传距离为0.27,亲缘系数为0.17;2)基因组等位基因频率为0.77,有效等位基因数为1.52,多态信息含量均值为0.31,多态性标记比例为88.28%,观测杂合度为0.32,期望杂合度为0.31;20世代前通城猪有效群体含量为105头,当前世代有效群体含量为94头;ROH共计有184个,平均ROH长度为23.71Mb,其中28.80%的长度在15~20Mb之间;基因组近交系数为0.04%,具较低水平的近交程度。通城猪保种群是一个没有分层的纯种群体,具有丰富的遗传多样性,得到了有效保护。展开更多
文摘In this study, five immune traits including immunoglobulin G (IgG), delayed-type hypersensitivity (DTH), leukocyte counts (WBC), total erythrocytes (RBC) and total protein in serum (TP) were measured in Tongcheng pigs, Swedish Landrace, British Large White and two three-way crossbreds of Landrace× (Large White×Tongcheng), Large White×(Swedish Landrace×Tongcheng). Tongcheng pigs had the highest values of IgG (45.04 mg/mL),DTH (8.87mm),RBC (7.05×1012/L) and TP (66.69 g/L) among these five pig populations. RBC had positive heterosis in these studied pigs and other four immune traits had negative heterosis. There were significantly positive correlation between IgG and DTH (r=0.33, P<0.01), IgG and TP (r=0.27, P<0.01), DTH and TP (r=0.25, P<0.01).
文摘旨在基于SNP芯片信息分析通城猪保种群的群体结构和遗传多样性,对保种效果进行监测。本研究利用“中芯一号”50KSNP芯片对68头通城猪的全基因组SNP进行扫描,通过以下两方面评估保种效果:1)群体结构。通过群体分层、遗传距离、亲缘关系以及公猪基因组家系等分析,研究通城猪个体间的群体结构;2)遗传多样性。估算等位基因频率、有效等位基因数、多态信息含量、多态性标记比例、杂合度、核苷酸多样性等多态性和杂合性相关参数估计遗传多样性,分析有效群体含量和连续性纯合片段(runs of homozygosity,ROH),综合评估保种效果。结果显示:1)保种群无明显分层,遗传距离为0.27,亲缘系数为0.17;2)基因组等位基因频率为0.77,有效等位基因数为1.52,多态信息含量均值为0.31,多态性标记比例为88.28%,观测杂合度为0.32,期望杂合度为0.31;20世代前通城猪有效群体含量为105头,当前世代有效群体含量为94头;ROH共计有184个,平均ROH长度为23.71Mb,其中28.80%的长度在15~20Mb之间;基因组近交系数为0.04%,具较低水平的近交程度。通城猪保种群是一个没有分层的纯种群体,具有丰富的遗传多样性,得到了有效保护。