摘要
采用短期饲喂试验研究了富硒麦芽硒在鸡蛋中的沉积以及蛋鸡对其相对生物利用率。将 30羽 70周龄 ,产蛋率 6 0 %的伊莎蛋鸡随机均分为 3组 ,A组为对照组 ,饲以基础日粮 (含硒 0 .2 3mg/kg) ;B、C组为试验组 ,B组饲以基础日粮加亚硒酸钠 ,日粮含硒 ( 0 .70± 0 .0 3) mg/kg,C组饲以基础日粮加富硒麦芽 ,日粮含硒 ( 0 .72± 0 .0 2 ) mg/kg。试验过程中观察蛋鸡的生产性能 ,定期从各组鸡所产蛋中随机抽取 5枚测定蛋清、蛋黄硒含量 ,计算总硒量。试验结束时 ,每组鸡全部扑杀 ,测定其全血、肝、肾硒含量和 GSH-Px的活性。结果显示 ,日粮中加硒可提高鸡蛋、肝、肾硒含量和全血、肝、肾 GSH-Px活性 ,但对蛋鸡生产性能无显著影响 ;与亚硒酸钠一样 ,饲喂富硒麦芽鸡所产蛋中的硒主要存在于蛋黄中 ;以亚硒酸钠的相对生物利用率为 1 0 0 %计 ,富硒麦芽硒提高肝、肾硒含量和 GSH-Px活性的相对生物利用率分别为 86 .4 %、98%、1 1 6 %、1 1 1 %。
A short term feeding experiment was conducted to study relative bioavailability of selenium from se enriched malt and sodium selenite to laying hen.Thirty ISAS hens,70 weeks old,were divided into three groups randomly and each was fed the following diets:①control basal diet,the selenium concentration was 0.23 mg/kg;②control basal diet+0.5 mg/kg Se from sodium selenite;③control basal diet+0.5 mg/kg selenium from se enriched malt.The experiment lasted four weeks.The results showed that egg production and other production performance were not affected by treatments.Selenium concentration in eggs was significantly higher in treated groups than that in control group(P<0.01).Selenium from sodium selenite and selenium enriched malt mainly deposited in egg yolk.When the Se contents in liver and kidney were used as the response criteria,the selenium relative bioavailability of se enriched malt,comparing to sodium selenite(arbitrary set at 100%),was 86.4% and 98%;while the bioavailability of se enriched malt,which was estimated by the activity of GSH Px in liver and kidney,comparing to sodium selenite(arbitrary set at 100%),was 116% and 111%.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2001年第4期395-398,共4页
Chinese Journal of Veterinary Science
基金
江苏省"九五"农业重点攻关资助项目 (Q983 7)
