Specific primers for the MC1R gene of alpacas(GenBank EU1358800) were designed to amplify the cDNA sequence using RT-PCR to seek variation in the sequence and explore the relationship between the expression level of M...Specific primers for the MC1R gene of alpacas(GenBank EU1358800) were designed to amplify the cDNA sequence using RT-PCR to seek variation in the sequence and explore the relationship between the expression level of MC1R gene and alpaca coat color.The MC1R gene from white alpaca was cloned successfully and sequence analysis verified that the MC1R gene,encoding 317 amino acids,was 1081 bp in length.Compared with the existing sequence in GenBank,sequence identity was 99.9%and 7 mutations were found.Primers,designed from the sequence obtained,were used to assess the relative expression of MC1R in alpacas of different coat color using QRT-PCR and SPSS 13.0 software.Relative expression of MC1R in the skin of brown alpacas was 4.32 times higher than that in white alpacas after normalization with GAPDH(P【0.01),indicating that MC1R expression may be related to coat color of alpacas.展开更多
本研究旨在探讨不同蛋白质水平日粮对绵羊胰岛素样生长因子-1(IGF-1)和生长激素(GH)分泌及基因mRNA表达量的影响,为科学配置肉羊饲料及研究肉羊生长发育提供基础。选择6月龄体重相近的多胎萨福克公羔18只,随机分为3组,分别饲喂不同蛋白...本研究旨在探讨不同蛋白质水平日粮对绵羊胰岛素样生长因子-1(IGF-1)和生长激素(GH)分泌及基因mRNA表达量的影响,为科学配置肉羊饲料及研究肉羊生长发育提供基础。选择6月龄体重相近的多胎萨福克公羔18只,随机分为3组,分别饲喂不同蛋白质水平的日粮(低蛋白日粮、中蛋白日粮和高蛋白日粮)。采用ELISA方法和SYBR Green Real-time PCR方法检测日粮不同蛋白质水平对不同生长发育阶段(30、60、90和120d)羔羊外周血中IGF-1、GH浓度和皮肤组织中基因表达的影响。结果显示,日粮蛋白质水平显著影响绵羊平均日增重、外周血中IGF-1和GH的浓度以及皮肤组织IGF-1基因的表达丰度,而未显著影响GH基因的表达丰度。结果提示,随着日粮蛋白质水平的升高,绵羊生长发育快,外周血中IGF-1浓度增加,GH浓度降低,IGF-1基因表达量增加。展开更多
基金supported by the National Natural Science Foundation of China(No.30501070)Shanxi Natural Science Foundation(No.20041099)President Foundation of Agricultural University of Hebei (BS2007023)
文摘Specific primers for the MC1R gene of alpacas(GenBank EU1358800) were designed to amplify the cDNA sequence using RT-PCR to seek variation in the sequence and explore the relationship between the expression level of MC1R gene and alpaca coat color.The MC1R gene from white alpaca was cloned successfully and sequence analysis verified that the MC1R gene,encoding 317 amino acids,was 1081 bp in length.Compared with the existing sequence in GenBank,sequence identity was 99.9%and 7 mutations were found.Primers,designed from the sequence obtained,were used to assess the relative expression of MC1R in alpacas of different coat color using QRT-PCR and SPSS 13.0 software.Relative expression of MC1R in the skin of brown alpacas was 4.32 times higher than that in white alpacas after normalization with GAPDH(P【0.01),indicating that MC1R expression may be related to coat color of alpacas.
文摘本研究旨在探讨不同蛋白质水平日粮对绵羊胰岛素样生长因子-1(IGF-1)和生长激素(GH)分泌及基因mRNA表达量的影响,为科学配置肉羊饲料及研究肉羊生长发育提供基础。选择6月龄体重相近的多胎萨福克公羔18只,随机分为3组,分别饲喂不同蛋白质水平的日粮(低蛋白日粮、中蛋白日粮和高蛋白日粮)。采用ELISA方法和SYBR Green Real-time PCR方法检测日粮不同蛋白质水平对不同生长发育阶段(30、60、90和120d)羔羊外周血中IGF-1、GH浓度和皮肤组织中基因表达的影响。结果显示,日粮蛋白质水平显著影响绵羊平均日增重、外周血中IGF-1和GH的浓度以及皮肤组织IGF-1基因的表达丰度,而未显著影响GH基因的表达丰度。结果提示,随着日粮蛋白质水平的升高,绵羊生长发育快,外周血中IGF-1浓度增加,GH浓度降低,IGF-1基因表达量增加。
文摘本试验旨在探讨不同蛋白质水平日粮对梅花鹿胰岛素样生长因子-1(IGF-1)基因和生长激素GH基因m RNA表达量的影响,为科学配置梅花鹿饲料及鹿茸生长提供理论基础。选取27头4岁梅花鹿公鹿为试验对象,随机分成3组,分别饲喂不同蛋白质水平的日粮(Ⅰ:20%,Ⅱ:24%,Ⅲ:28%)。采用SYBR Green Real-time PCR方法检测不同蛋白质水平日粮对梅花鹿鹿茸组织IGF-1基因和GH基因的表达情况。结果表明:不同蛋白质水平日粮显著影响鹿茸组织IGF-1和GH基因的表达风度,随着蛋白质水平的增加,IGF-1基因在鹿茸组织上的表达量降低,Ⅰ组鹿茸表达量最高,显著高于Ⅱ组、Ⅲ组(p<0.05),GH基因在Ⅲ组鹿茸表达量最高,显著高于Ⅰ组、Ⅱ组(p<0.05)。
