中药饲料添加剂对蛋鸡生产性能及蛋品质的影响

Effect of Chinese Herb Feed Additive on Layer Production and Egg Quality

目的研究探讨中药饲料添加剂微粉对蛋鸡生产性能及蛋品质的影响.方法将600只开产前100日龄罗曼蛋鸡随机分为5组,每组120只,其中4组为试验组,分别添加0.25%中药微粉、0.5%中药微粉、0.25%中药粗粉和0.5%中药粗粉,第5组为对照组.用药组连续用药5 d,然后停药3 d为一个周期,如此反复5个周期.定期测定产蛋量和鸡蛋品质.结果试验A组、B组的产蛋率均显著高于对照组和试验C组、D组（P〈0.05）,产蛋高峰期过后,两个超微粉试验组在整个试验期均保持90%以上的产蛋率,对照组和粗粉组产蛋率均下降到90%以下.添加不同剂量中药添加剂微粉对壳厚、蛋形指数无影响,但哈夫单位在试验后表现出显著或极显著差异.结论在蛋鸡产蛋日粮中添加中药微粉0.250.5%,可显著提高产蛋率和蛋内品质.

Objective To investigate the effect of Chinese herb feed additive on layer production and egg quality.Methods Six hundred pre-natal 100-day Roman layers were divided into 5 groups randomly.In four experimental groups,in group A and B,0.25% and 0.5% Chinese herb ultrafine powder were added into diet respectively.In group C and D,0.25% and 0.5% Chinese herb cribble were added into diet respectively.Group E was control group.Chinese herb feed additive were used in experimental groups for continuously 5 days,then stopped for 3 days.That was a cycle,which was repeated 5 times.Egg quantity and quality were measured periodically.Results Results shown that laying rate in group A and B were significantly higher than that in group C and D（P〈0.05）,and maintained above 90% in the whole experimental stage after egg laying crest-time,while laying rate in group C,D and E decreased to less than 90%.Adding different doses of Chinese herb feed additive had no effect on quality of shell thickness,egg-shaped index.Albumen in experimental groups were different significantly with those of control during anaphase.Conclusion Adding Chinese herb feed additive 0.25-0.5% fine powder to layers’diet may improve laying rate and egg quality significantly.