【摘 要】
：
The insulin-like growth factor binding protein-3 (IGFBP-3) was known as a key factor that regulates the effect of insulinlike growth factors (IGF-1 and IGF-2) o
【机 构】
：
College of Animal Science
【基金项目】
：
国家高技术研究发展计划(863计划);国家自然科学基金;The Key Program of Science and Technology of Guangdong Province,China
论文部分内容阅读
The insulin-like growth factor binding protein-3 (IGFBP-3) was known as a key factor that regulates the effect of insulinlike growth factors (IGF-1 and IGF-2) on pig growth and development. We first identified 38 single nucleotide polymorphisms (SNPs) from a fragment of the IGFBP-3 gene spanning 1 823 bp using the denaturing high-performance liquid chromatography (DHPLC) method and confirmed them by direct sequencing. Among these SNPs, 36 located in introns and the remaining 2 in the 3 prime untranslated region (3UTR). In addition, 16 PCR-RFLP polymorphisms were identified within these SNPs. Three SNPs were then selected to genotype 272 F2 individuals with PCR-RFLP method and the association of polymorphism with growth and carcass traits were analyzed. The results showed that no significant associations were observed between polymorphisms of A265G and A952G and traits. However, the A2670G significantly related with live body length, loin muscle area, and skin and fat percentage (P
其他文献
以具代表性的5个籼型超级稻为材料,用汕优63作对照,比较研究了超级中籼杂交稻物质生产与分配的特性。超级稻具有显著的物质生产与积累优势,产量随成熟期物质积累量的增加而提
在饲料中添加定量的酵母免疫多糖,投喂注射接种了福尔马林灭活的嗜水气单胞菌(Aeromonas hydrophila)菌苗的斑点叉尾(鮰)(Ictalurus punctatus),28 d后通过测定供试鱼的增重
目的 探讨胚胎干细胞(ESC)诱导分化为树突状细胞(DCs)的实验方法,实现体外大规模扩增高纯度DCs用于临床免疫治疗.方法 E14小鼠胚胎干细胞系在GM-CSF与IL-3联合作用下经胚胎体
选择6种大孔吸附树脂,比较其对桑叶中生物碱的吸附率和解析率的影响,筛选较优吸附树脂,对其吸附性能进行了考察,结果表明:NKA-9树脂对桑叶中生物碱类有较好的吸附和解析效果.
公路的养护涉及投资、经营、路况评估、养护对策、机械化作业、安全管理诸多方面，需要根据轻重缓急，有重点地分批研究，并在使用过程中，使之逐步完善，形成具有中国特色的、比较完整
通过分析高速公路交通事故的现状及特点,分别从人、车、路三方面探讨了诱发交通事故的原因.对在高速公路上行驶的车辆如何减少和预防交通事故的发生,将起到一定的警示、借鉴
本文简述了2007年国内城市生活垃圾处理的总体状况,归纳了2007年国家发布及实施的有关标准与政策以及在实施中存在的主要问题;重点分析了城市生活垃圾填埋、焚烧和堆肥的现状
分析并验证了光纤反射器的透过率在[0,1]范围内与耦合器耦合比偏离50∶50的程度呈二次曲线关系.环形腔中光纤的弯曲对透过率的影响不大,然而径向挤压和扭转通过双折射对透过
提出"心理作业空间"(Cognitive Operation Area)概念,"心理作业空间"是指对于某一作业,符合大多数作业者心理所认知的相应子作业空间.在由作业者、大型机电设备和周围环境组
参考资料在解说杜牧的《寄扬州韩绰判官》中的首句“青山隐隐水迢迢”时,显得扑朔迷离,作者经过仔细推断,认为此句是实写,理由如下:一是符合文学创作的规律,二是与词义相吻合