【摘要】 研究了苜蓿和胡萝卜中的类胡萝卜素以及化学合成的Ｂ－胡萝卜素（Ｂｅｔａ－Ｃａｒｏｔｅｎｅ，以下简称ＢＣ）在鸡体组织的沉积。试验分Ａ、Ｂ、Ｃ、Ｄ四组，Ａ为对照组，Ｂ、Ｃ、Ｄ在基础日粮中分别添加苜蓿汁、胡萝卜汁和１％水溶性ＢＣ（粉状），使各处理组日粮中胡萝卜素的添加量均为１０ｍｇ／ｋｇ。结果发现：各处理组肝脏和血清中类胡萝卜素的含量均高于对照组，但差异不显著；处理组脂肪组织类胡萝卜素的含量显著或极显著地高于对照组（Ｐ＜０．０５，Ｐ＜０．０１）。这表明鸡吸收并在脂肪组织中沉积日粮中的类胡萝卜素；不同来源的类胡萝卜素在鸡体组织的沉积存在差异，以苜蓿中类胡萝卜素沉积为最高。同天然来源的色素（胡萝卜汁）相比，合成色素（水溶性ＢＣ）更容易被鸡吸收并在鸡体内沉积。更多还原

【Abstract】 An experiment was conducted to study the accumulation of carotenoids in chicken tissues.In the trial,120 one-day-old ISA layers were divided randomly into 4 groups.A is control group fed by basal diet;B,C and D are treatment groups fed with basal diet suplemented with alfla juice,carrot juice and 1% water-dispersal Beta-carotene(i.e.BC)respectively.The experiment showed:in livers and serum,carotenoids content of each treatment group was higher than that of control group,but the difference was not significant;while in fat tissues,that of each treatment group was significantly or extremely significantly igher than that of control group;among treatment groups,the content in fat tissues was significantly different This suggests ditery carotenoids were uptaken and accumulated mainly in fat tissue;carotenoids from alfla other than caeeot was easily absorbed and accumulated by chicken;synthetic pigmnt was absorbed and accumulated more easily than natural one更多还原