AA鸡体内含硒量的试验

DETERMINATION OF SELENIUM DISTRIBUTION IN THE BODY OF AA CHICKENS

从先后饲养45d龄的3群AA鸡中各选择10羽,每羽体重约2kg,公母各半,口腔投人^(75)Seo_2 4 μci/羽,常规饲养24h,屠宰分别取其肌肉、心、肝、毛和粪便各1g,采用“ET-613自动计数^(125)I放免测量仪”测量^(75)Seo_2在鸡体内肌肉、心、肝、毛中的分布和在粪便中^(75)Seo_2的含量。按4μci/羽剂量的放射性^(75)Seo_2引入鸡体内,测量结果,经24h,在肝脏含量最多,而肌肉最少。用放射性^(75)Seo_2制剂,由4μci/羽至8μci/羽的范围内引入量,随着剂量增加所测器官放射性^(75)Seo_2无明显增加,而粪便的放射性^(75)Seo_2则随引入放射性^(75)Seo_2课题的增加而增加。

Three groups of 10 A A chickens which were 15 day-old with body weight of about 2 kg were selected in the trials. Each chicken was orally administrated with 4 nci 75SeO2 and slaughtered after 24 hours of conventional feeding. The per gram radioactivities of muscle, heart .liver, feather and feces were determined with a FT-613 Auto-counting 125I Radioimmunological Detector. The results showed that the maximum content could be found in the liver and the minimum in the muscles. Another trial was carried out by adopting increasing doses from 4 to 8 μci of 'SeO2 orally introduced into each chicken. The radioactivities of these organs and feces were determined with the method described. The resultcs indicated that the radioactivies of organs did not significantly increase as the intake of 'SeO2 increased, while the radioactivity of feces correlated with the dose of 75SeO2 introduced.