夏季日粮中添加酵母硒对柴鸡生产性能及蛋中硒沉积的影响

Effect of dietary Se-enriched yeast on performance,selenium distribution in the eggs of loealhen in summer

选用30周龄河北柴鸡360只,随机分成5组,每组3个重复,基础日粮含硒(Se)0.08 mg/kg,试验组Se的添加水平分别是0、0.15、0.3、0.5、1.0 mg/kg;预试期1周,试验期为7周。探讨在夏季,添加不同水平的酵母硒对产蛋柴鸡生产性能及蛋中硒沉积的影响。结果表明,日粮中添加0.5 mg/kg Se,产蛋率极显著高于其它试验组(P<0.01),而蛋重差异不显著(P>0.05);日粮中添加1 mg/kg Se时,蛋中硒含量达到最高,为1.91μg/g。

360 thirty-week-old local laying- hens were randomly divided into five groups, with three replications per group. The control group were fed with basal diets containing 0.08 mg/kg Se, the testing group, with basal diets adding 0.15,0.3,0.5,1.0 mg/kg Se respectively. Pretest time is 1 week and experimental time is 7 weeks. Discussing the effect of dietary Se - enriched yeast on production performance, selenium content in the eggs of local hens in summer. The results showed as follows： at all supplemental levels, the laying hens fed with 0.50 mg/kg selenium had increased production significantly（P〈0.01）. With the increase of diet＇s selenium level, Se distribution in egg was improved, especially the diets containing 1.0 mg/kg Se, Se distribution in egg was at top （1.91 μg/g）.