硒与抗坏血酸的生理作用

The Physiological Effect of Selenium on Ascorbic Acid

用红外光谱法分析硒蛋白的分布状态及硒蛋白与有机化合物作用关系。为研究硒与抗坏血酸的生理作用提供合理信息数据。硒是人和动物不可缺少的一种稀有分散性元素 ,由于其在生物体中生理作用比较特殊 ,已成为国内外学者重要研究课题之一。尽管人们将大部分注意力集中于硒与其它元素的相互作用 。

The infrared spectrum provides reasonable information data for distribution of selenium proteins qualitatively studies physiological effect of selenium compounds on ascorbic acid.PLEX SUPPLEMENTATION ON PERFORMANCE,CARCASS COMPOSITION,AND BLOOD BIOCHEMICAL PARAMETERS IN MEAT-TYPE DUCKS$$$$$$$$WU Yong-sheng,DONG Gou-zhong,WANG Li-chang,HUANG Yong,YU Chun-fang,LI Zhou-quan(College of Animal and Veterinary Sciences,Southwest Agricultural University,Chongqing 400716,China)ABSTRACT: This study was aimed to evaluate the effects of chromium-niacin complex on performance,carcass composition,and blood biochemical parameters in meat-type ducks.Two hundred forty female Cherry Valley ducks (1 day old)were randomly divided into 3 groups (80 ducks per group).The diet of each group was supplemented with 0,100 and 200μg/kg chromium from chromium-niacin complex respectively.These were fed for 49 days. The results showed:(1)Addition of chromium from chromium-niacin complex increased (P<0.01) weight,average daily gain,and decreased (P<0.01) feed/gain ratio,but average daily feed intake was not affected by Cr (P<0.05).(2)Dietary chromium supplementation increased (P<0.05) lean meat rate and crude protein content of carcass,but decreased (P<0.05) subcutanous fat rate and ether extract content of carcass.(3)Dietary chromium supplementation reduced (P<0.01)serum glucose,total fat,total cholesterol and triglyceride level,but increased (P<0.01) serum total protein level. The results indicate that dietary 200 μg/kg chromium from chromium-niacin complex supplementation can improve performance and carcass quality of meat-type ducks.Key words: chromium ; performance ; carcass composition ; blood biochemical parameters ; duck