不同经济类型猪种脂肪细胞的发育及其脂肪合成能力的比较研究  

THE COMPARISON RESEARCH ON THE DEVELOPMENT OF ADIPOCYTE AND ITS LIPID SYNTHESIS FROM DIFFERENT ECONOMICAL PIGS

作　　者：孙金梅[1] 路兴中[1] 杨公社[1] 唐文花[1] 

机构地区：[1]西北农业大学动物科技学院,杨陵712100

出　　处：《畜牧兽医学报》2000年第2期131-136,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：国家自然科学基金!编号 39370 5 0 3

摘　　要：通过脂肪组织固定技术 ,将脂肪组织分离为体积不同的脂肪细胞 ,发现不同经济类型的猪种在不同年龄阶段其脂肪细胞的生长发育过程存在明显的差异。肥胖型香猪的脂肪沉积 ,在 5～ 8月龄期间是由脂肪细胞的肥大作用引起的 ;瘦肉型长白猪的脂肪细胞明显小于香猪 ,单位组织重的脂肪细胞数极显著地高于香猪。同时研究表明 ,体积不同的脂肪细胞合成脂肪的能力差异极显著 ,表现为细胞体积越大 ,其合成脂肪的能力越强 ,不受品种和年龄的影响。The adipocyte was seperated into different size ranges from O sO 4 fixed adipose tissue There was significant difference in the development of adipocyte between species and ages The fat accumulation in Xiang pig was mainly caused by the hypertropy during the age of 5～8 month That is:the adipocyte of 105～154μm was continuously increased with age,therefore the adipocytes of 38μm and 60μm was continuously decreased with age,and the adipocytes of 38μm was not exist at the age of 8 month In contrast,The hypertropy of adipocytes of Landrace was dominated by the adipocytes of 60～105μm Those cells increased sharply with age,the adipocytes of 105～154μm was increased marginly The fat accumulation at the age of 8 munth was not only caused by hypertropy but also by the hyperplasia That means to the limit of the adipocyte hypertropy,the hyperplasia was the necessary to the fat accumulation The adipocyte of Landrace was significantly smaller than that of Xiang pig,there fore the adipocyte number per unit weight was higher than Xiang pig There was significant difference between adipocytes of different size incorporate substrates into triglyceride The larger the adipocyte size,the more it synthesis its fat,and not affected by species and ages [WT5HZ]

关 键 词：脂肪细胞 生长发育 品种 年龄 猪 合成能力 

分 类 号：S828.1[农业科学—畜牧学] Q954.63[农业科学—畜牧兽医]