桑叶粉对蛋鸡生产性能及蛋品质的影响研究

选用240只330日龄的健康罗曼商品蛋鸡,随机分为5个组,每组3个重复,每个重复16只。5组蛋鸡饲喂5种日粮,对照组饲喂基础日粮,其他处理组在基础日粮的基础上分别添加2%、4%、6%和8%的桑叶粉形成的试验日粮,试验期5周,研究桑叶粉对蛋鸡生产性能和蛋品质的影响。试验结果表明：在蛋鸡日粮中添加桑叶粉能降低蛋鸡每日的采食...

Study on Effect of Mulberry Leaves Powder on Productive Performance and Egg Quality of Layer

This experiment was conducted to test the effect of mulberry leaves powder on productive performance and egg quality of layer.240 48-w healthy Lohmann layers were allotted to five treatments randomly（three replicates of 16 layers per replicate）.The dietary treatments were：basic diet（C）,C＋2%,4%,6%and 8%mulberry leaf powder,respectively.Test period was 5 weeks.The results showed that：compared with the control group,experimental groups（1）The diets supplemented mulberry leaf powder could reduce daily feed intake of layers and egg productions.（2）There were no significant difference on egg weight,shell weight,yolk weight,egg shape index,eggshell thickness,eggshell strength,Hough unit,egg specific gravity and other physical indicators（P 0.05）;（3）the yolk color and red value increased extremely（P0.01）;the yellow value increased appropriately,but no significant difference（P0.05）;the yolk light value decreased significantly（P0.05）;（4）the content ofβ-carotene,vitamin E,monounsaturated fatty acids and polyunsaturated fatty acids could increased significantly（P0.01）;the lecithin content increased appropriately;the content of saturated fatty acids,amino acids,cholesterol were not significant（P0.05）.Therefore mulberry leaf powder can be appropriate to reduce the productive performance of layer,while can improve egg quality.