在重庆市金佛山地区采集10群东方蜜蜂样本，每群随机取15只工蜂，每只工蜂测定38个形态指标，对形态特征数据进行主成分分析和聚类分析。结果发现：金佛山地区东方蜜蜂主要分为两个类群；两个类群间体型大小差异较大。与邻近地区东方蜜蜂形态特征数据比较发现，金佛山地区东方蜜蜂与重庆荣昌和开县、湖南、湖北的东方蜜蜂遗传距离较近。
本试验选用24头初产母猪,研究叶酸对IUGR仔猪肝脏甲硫氨酸腺苷转移酶(MAT),胱硫脒-β-合酶(CBS),亚甲基四氢叶酸还原酶(MTHFR),DNA甲基化转移酶1(DNMT1),过氧化物酶增殖物激活受体(PPAR),糖皮质激素受体(GR),瘦素受体(ob-R)和乙酰辅酶A氧化酶(AOX)基因表达的影响.配种后母猪随机分到对照组(C,1.3mg/kg叶酸)和处理组(F,30mg/kg叶酸),每个
Highly pathogenic porcine reproductive and respiratory syndrome (PRRS) was large-scalely outbreaked in China and Vietnam in 2006 and 2007.To better understand host immune response to both highly virul
Western and indigenous Chinese pig breeds show obvious differences in muscle growth and meat quality,however,the underlying molecular mechanism remains unclear.In this study,proteome analysis of longi
Expression patterns and functional roles of protein-coding genes in the Dlk1-Dio3 imprinted domain have been extensively characterized in mammals,but the imprinting status of Retrotransposon-like gene
Piglet crushing is related to sow and piglet behaviours,and their behaviours are influenced by room temperature.Knowledge of the behavioural difference in lactating sow and the usage of the heated cre
If the acquisition of virulence genes (VGs) for pathogenicity were not solely acquired through horizontal gene transfers of pathogenicity islands,transposons and phages,then clonal clusters of enterot
以四川凉山半细毛羊资源群体为研究对象,选取位于绵羊3号染色体上的9个微卫星标记,构建遗传连锁图谱,用QTLExpress软件对影响绵羊生长发育的5个性状进行QTL定位分析.结果显示：①9个微卫星标记的平均多态信息含量和平均群体杂合度分别为0.606 (0.378～0.738)、0.650 (0.404～0.766)；②连锁图谱总长为339.8 cM,标记平均间距为42.5 cM,略长于国际主要绵羊