| 摘要: |
| 将216只105周龄北京红鸡，随机分为6个处理，每处理6个重复，每重复6只鸡，试验为期4周，试验组日粮分别添加125 mg/kg，铜，50 mg/kg大蒜素，125 mg/kg铜＋50 mg/kg大蒜素，1 mg/kg吡啶羧酸铬和50 mg/kg壳聚糖，在一致背景下，探讨日粮中添加铜，大蒜素，定到铬及壳聚糖对鸡蛋胆固醇的影响，结果表明:（1）日粮中添加铜和大蒜素，蛋黄胆固醇浓度（mg/g蛋黄）分别下降6.7％（P＞0.05）和11．0％（P＜0.05），鸡蛋胆固醇含量（mg/枚）分别降低11.0％和9.1％（P＜0.05），（2）铜，大蒜素，有机铬，壳聚糖4种物质中，铜降低鸡 胆固醇含量的作用最显著，蛋鸡采食含铜125 mg/kg日粮4周，在科蛋率的情况下显著降低了鸡蛋胆固醇含量。（3）铜和有机铬均极显著降低了蛋鸡血浆总胆固醇（P＜0.01），LDL-C（P＜0.01）水平，而且铜还显著升高了HDL-C水平（P＜0.05）。 |
| 关键词: 鸡蛋 胆固醇 铜 大蒜素 吡啶羧酸铬 壳聚糖 |
| DOI： |
| 分类号: |
| 基金项目:国家“九五”攻关项目(99-009-02-05);国家自然科学基金资助项目(39670540). |
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| Effects of dietary additives on egg yolk cholesterol content |
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| Abstract: |
| A trail was conducted with a duration of four weeks to investigate the influences of dietary Cu (from CuSO4.5H2O),garlic,Cr picolinate,chitosan on cholesterol content in the egg yolk. 216 Beijing Red laying hens of 105-week-age,were randomly divided into six group and was fed with 125 mg/kgCu,50 mg/kg garlic,125 mg/kg Cu 50 mg/kg garlic,1 mg/kg Cr picolinate and 50 mg/kg chitosan respectively.Per group had six replicates,which consisted of six layers. The result suggested:1.Egg yolk cholesterol concentration (mg/g egg yolk) were decreased by 6.7% (P＞0.05) and 11.0% (P＜0.05) respectively by commercial diet supplemented with Cu and garlic.2.The effect of dietary Cu's reducing egg yolk cholesterol-content (mg/egg) is the most significant among four dietary supplementation (Cu,garlic,Cr picolinate and chitosan).At the same time,the egg production was not influenced by supplementation of Cu.3.Both plasma cholesterol contents and LDL-C level in layer were significantly decreased by dietary Cu and Cr-picolinate respectively (P＜0.01). HDL-C level was increased significantly by adding dietary Cu. |
| Key words: egg cholesterol Cu garlic Cr picolinate chitosa |
