不同添加剂对蛋鸡生产性能和蛋品质的影响

为探讨不同添加剂对蛋鸡生产性能的影响，选用1 500只280日龄海兰褐蛋鸡，随机分为5组，每组5个重复，每个重复60只；对照组饲喂基础日粮，基础日粮中分别添加0015%土霉素、001%微生态制剂、01%中草药提取物和5%新型生物复合预混剂为试验Ⅰ\|Ⅳ组，研究几种添加剂对海兰褐蛋鸡生产性能和蛋品质指标的影响，试验期30 d。结果表明：基础日粮中添加微生态制剂、中草药提取物和新型生物复合预混剂，其蛋鸡产蛋性能和蛋白质均优于对照组和添加土霉素组，且以添加5%新型生物复合预混剂组蛋鸡生产性能更佳。

Effects of different additives on performance of laying hens

The objective of this study was to approach the effect of different additives on performance of laying hens. One thousand five hundred 280\|day\|old healthy Hyline laying hens were randomly divided to five treatments with five replicates for each and sixty hens in each replicate. The control group was fed with the corn\|soybean meal based diet， and the treated groups were added by 0015% hydroxytetracline， 001% microeco\|preparation， 01% Chinese herbal medicine extractive， and 5% biologic complex mixture on the basis of the control group respectively. We investigated the effect of different additives on performance and egg quality of laying hens for 30 days. The results showed that the groups added with microecologics， Chinese herbal medicine， and complex mixture significantly increased egg quantity and egg weight， improved the contents of cholesterin， ash， protein and the egg thickness. The results indicated that basal diet added by 5% biologic complex mixture can increase the performance of laying hens and showed a better egg quality.