Effect of adding astaxanthin and antimicrobial peptides to the feed of parental laying hens on the hatching of breeding eggs
To investigate the effect of adding astaxanthin and antimicrobial peptides to the feed of parental laying hens on the hatching of breeding eggs.The trial was conducted with 600 healthy 16-week-old Iza Brown breeder hens with no significant difference in weight,randomly divided into 3 groups of 10 replicates each,with 20 hens per replicate.The control group(CT)was fed the basal diet,while the experimental groups(E1 and E2)were added different ratios(1.0％ astaxanthin+300 mg/kg antimicrobial peptide,1.0％ astaxanthin+500 mg/kg antimicrobial peptide)of astaxanthin and antimicrobial peptide to the basal diet.It was 9 weeks of feeding,and artificial insemination was performed at the end of 25 weeks of age.On the third day after insemination,50 eggs were randomly selected for hatching in each replicate,500 eggs per group,1500 eggs in total.The results showed that:(1)The fertilization rate of test group E1 and test group E2 increased by 4.34％and 3.04％,respectively,compared with the control group(P＜0.05).The hatching rate of fertilized and incubated eggs in the test group E1 increased by 2.76％ and 7.21％,respectively,compared with the control group(P＜0.05).The hatchability of fertilized eggs and hatchability of incubated eggs in the experimental group E2 increased by 2.24％ and 4.72％(P＜0.05)compared with the control group,respectively.(2)Compared with the control group,the healthy chick rate was increased by 4.64％and 3.65％in test group E1 and test group E2,respectively(P＜0.05).(3)The mean newborn weight of test group E1 and test group E2 increased by 13.69％ and 4.82％,respectively,compared with the control group(P＜0.05).In conclusion,the addition of astaxanthin and antimicrobial peptide to the feed significantly improved the fertilization rate,hatching rate,healthy chick rate and mean newborn weight of breeding eggs(P＜0.05),and the addition of 1.0％ astaxanthin and 300 mg/kg antimicrobial peptide in the feed had the best hatching effect.
NETL
NSTL
万方数据
维普
