| 摘要: |
| 【目的】研究富硒苜蓿对蛋鸡生产性能、蛋硒及蛋硒转化率的影响，为通过硒肥-牧草-饲料-动物(食物链)链的物质传导作用进行动物补硒提供理论基础和技术支持。【方法】选取健康罗曼蛋鸡480羽，随机均分成8组，每组4个重复，1组为对照组，饲喂基础日粮；2，3，4，5，6，7和8组为试验组，分别饲喂在基础日粮中添加15%的7种硒水平（硒含量分别为0.37，2.78，5.97，8.09，9.93，17.42和28.75 mg/kg）苜蓿草粉的试验日粮，试验期为38 d，分别在第7，14，21，28，38天取样，分析富硒苜蓿对蛋鸡生产性能、蛋硒及蛋硒转化率的影响。【结果】基础日粮适量添加富硒苜蓿能显著(P＜0.05)或极显著(P＜0.01)提高蛋鸡产蛋率，显著(P＜0.05)提高日产蛋量，降低料蛋比（P＜0.05），且产蛋率和日产蛋量均随添加富硒苜蓿硒含量的提升呈先升后降趋势，而料蛋比呈先降后升趋势；添加富硒苜蓿能显著(P＜0.05)或极显著(P＜0.01)影响蛋硒含量，蛋硒含量随着富硒苜蓿硒含量的提高而升高，但蛋硒转化率却随富硒苜蓿硒含量的升高而降低。【结论】基础日粮添加富硒苜蓿能提高蛋鸡产蛋率、日产蛋量、蛋硒含量，降低料蛋比。 |
| 关键词: 富硒苜蓿 蛋鸡 生产性能 蛋硒 蛋硒转化率 |
| DOI： |
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| 基金项目:国家“十二五”科技支撑计划项目(2011BAD17B04)；河南省重点科技攻关项目（132102110055）；河南省高等学校青年骨干教师资助计划项目(2012A232)；河南牧业经济学院博士基金项目(2012A20)；郑州市科技攻关项目（131PPTGG422-3） |
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| Effect of Se-rich alfalfa on production performance of laying hens, egg selenium concentration and egg selenium conversion rate |
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HU Hua-feng,ZANG Jin-can,JIE Xiao-lei,et al
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| Abstract: |
| 【Objective】The research was conducted to study the effect of plant selenium on the production performance of laying hens,egg selenium concentration and egg selenium conversion rate.【Method】480 Roman hens were randomly divided into 8 groups (4 replicates for each group).Group 1 was fed with the basal diet as the control.The experiment groups 2,3,4,5,6,7,and 8 were fed with basal diet with 15% alfalfa that contained different concentrations of selenium (selenium concentrations were 0.37,2.78,5.97,8.09,9.93,17.42 and 28.75 mg/kg,respectively).The experiment last 38 d,and samples were taken at the days of 7,14,21,28,and 38 d.Then the effects of plant selenium on the production performance of laying hens,egg selenium concentration and egg selenium conversion rate were analyzed.【Result】Adding Se-rich alfalfa to the basal diet significantly (P＜0.05) or very significantly (P＜0.01) increased the egg laying rates,significantly (P＜0.05) increased the daily egg yield and decreased the ratio of feed to egg.As the increase of Se- content,the egg laying rate and daily egg yield increased initially and then decreased,while the ratio of feed to egg behaved oppositely.Adding Se to the basal diet significantly (P＜0.05) or extremely significantly (P＜0.01) affected Se- content of eggs.As the increase of added Se content,the Se content in eggs increased while the egg selenium conversion rate decreased.【Conclusion】Adding Se-rich alfalfa to the basal diet could increase the egg laying rate,daily egg yield,and Se content in eggs while decrease the ratio of feed to egg. |
| Key words: Se-rich alfalfa laying hens production performance egg selenium egg selenium conversion rate |
