不同肠段中氨基酸螯合锌吸收特点的研究  

Absorption of Zinc amin-acid chelate in different parts of small intestine of rats

作　　者：董晓慧[1] 韩友文[2] 周桂莲[2] 许丽[2] 

机构地区：[1]广东省湛江海洋大学水产学院,广东湛江524025 [2]东北农业大学动物科技学院,黑龙江哈尔滨150000

出　　处：《畜牧与兽医》2003年第4期1-4,共4页Animal Husbandry & Veterinary Medicine

基　　金：黑龙江省九.五攻关课题 (G96B3 1 3 0 4 )

摘　　要：用 50日龄Wistar纯系雄性大鼠 ,以体内原位结扎肠段灌注技术结合放射性同位素示踪技术 ,通过与氯化锌比较 ,研究了十二指肠和空肠对氨基酸螯合锌 (以赖氨酸螯合锌和蛋氨酸螯合锌为代表 )的吸收特点。试验中观察了向结扎肠段灌注含不同形态锌的灌注液后 ,不同时间 (5 ,1 5 ,30 ,60 ,90 ,1 2 0min)血液中6 5Zn比放射性的动态变化 ,1 2 0min (试验结束 )时结扎肠段6 5Zn的消失率 ,不同组织器官中6 5Zn的比放射性的变化。试验结果表明 ,和空肠相比 ,十二指肠对 3种锌源的吸收率高 ;和氯化锌相比 ,十二指肠和空肠对The techniques of in vivo and in situ perfusing ligated intestinal segment wist radioactive isotope tracing were utilized to determine Zn absorption of Zinc amino acid chelate (Zn Lys and Zn Met of ligated duodenum of jejunum) in comparing with the ZnCl 2. and radioactivity of 65 Zn in blood at 5, 15, 30, 60, 90 and 120 minutes after perfusing different treating solutions, and in different tissues and organs at 120 minutes in 18 fifty day old male Wistar rats. The results indicated that duodenum was the main site of Zinc absorption comparing with the jejunum, duodenum and jejunam had higher absorption, and absorption rate of Zine amino acid chelates rather than ZnCl 2.

关 键 词：氨基酸螯合锌 吸收特点 体内原位结扎 十二指肠 空肠 

分 类 号：S816.72[农业科学—饲料科学]