Effects of Dietary Seaweed Powder and Antibacterial Peptides on Laying Performance of Hyline Brown Layer

A4 × 2(seaweed powder × antibacterial peptides) random experiment was designed to investigate the effect of different dietary levels of seaweed powder(0.0%,1.0%,3.0%,5.0%) and antibacterial peptides(300 mg/kg、600 mg/kg) on laying performance of Hyline Brown layer at 24 ~ 27 week-old and 28 ~ 31 week-old.Results indicated:(1) The supplementation of dietary seaweed powder significantly increased laying rate and ratio of feed to egg(P 0.05).(2) The supplementation of dietary antibacterial peptides significantly increased laying rate at 28 ~ 31 week-old.(P 0.05).(3) Interaction between seaweed powder and antibacterial peptides significantly increased laying rate and ratio of feed to egg(P 0.05).It is concluded that seaweed powder and antibacterial peptides interaction had a significant effect on the laying performance in Hyline Brown layer.The suitable level of dietary is 5% seaweed powder and300 mg/kg antibacterial peptides respectively in the whole period.