植物精油和有机酸对21至35周龄蛋鸡生产性能及蛋品质的影响

Effects of Essential Oil and/or Organic Acids on the Performance and Egg Quality of Laying Hens from 21 to 35 weeks

为探讨植物精油和有机酸作为绿色饲料添加剂的可行性,通过单独添加植物精油和有机酸及其复合物,研究对蛋鸡生产性能和蛋品质的影响。将504羽21周龄罗曼粉壳产蛋鸡随机等分为4组,每组7重复,每重复18只,试验期15周。对照组饲喂基础饲粮,精油组在基础饲粮的基础上添加300mg/kg精油、有机酸组添加300mg/kg有机酸、精油有机酸复合组添加300mg/kg精油有机酸复合物。结果表明,饲粮中添加植物精油和有机酸及其复合物对21~27周龄及28~35周龄蛋鸡的产蛋率、蛋重、平均日采食量及料蛋比无显著影响(P>0.05);添加植物精油相比于添加复合物显著提高了27周龄蛋鸡的蛋黄颜色(P<0.05),饲粮中添加精油显著提高35周龄蛋鸡的蛋黄颜色(P<0.05),混合及单独添加植物精油和有机酸对蛋壳厚度、蛋壳强度、蛋白高度及哈氏单位无显著影响(P>0.05)。试验结果表明,饲粮中添加植物精油和有机酸及其复合物不影响21~35周龄蛋鸡生产性能,单独添加植物精油可改善35周龄蛋黄颜色。

This experiment was conducted to study the performance and egg quality of laying hens from21 to 35 weeks with diet supplementing essential oil or organic acid or esssential oil and organic acid complex as green feed additives.A total of 504 21-week-old laying hens were randomly allocated to 4 groups,with 7 replicates per group and 18 chicken per replicate.The experiment lasted 15 weeks and the treatments were designed as follows：control（basal diet）,control diet supplemented with essential oil（basal diet＋300 mg/kg essential oil）,control diet supplemented with organic acid（basal diet＋300 mg/kg organic acid）,control diet supplemented with essential oil and organic acid compound（basal diet＋300 mg/kg compound of organic acid and essential oil）.The results showed supplementing essential oil or organic acid or complex had no significant effect on laying rate,egg weight,daily feed intake and feed to egg ratio of 21~27 weeks old and 28~35 weeks old laying hens（P〉0.05）.Adding plant essential oil to the diet significantly improved the yolk color of laying hens at week 27 of age（P〈0.05）.The supplement of essential oil,however,could improve yolk color of laying hen aged 35 weeks（P〈0.05）.There was no significant difference on eggshell thickness,eggshell strength,egg albumen height and Haugh unit between groups（P〉0.05）.Supplementing essential oil or organic acid had no effect on performance of laying hen at 21~35 weeks,and essential oil supplemented alone in diet could improve yolk color of laying hens at 35 weeks.