复方中药超微粉对蛋鸡产蛋性能、生殖激素及相关基因表达的影响

【目的】研究复方中药超微粉对蛋鸡产蛋性能、生殖激素及相关基因表达的影响。【方法】试验选取307日龄的新杨黑羽蛋鸡216只，随机分为3组，每组8个重复，每个重复9只；对照组饲喂基础饲粮，试验组分别在基础饲粮中添加0.5%丹参Salvia miltiorrhiza+0.25%女贞子Ligustrum lucidum+0.25%蒲公英Taraxacum mongolicum(复方1)、0.3%益母草Leonurus japonicus+0.2%丹参+0.25%女贞子+0.25%蒲公英(复方2)的超微粉，均以质量分数计；预试期7 d，正试期120 d。测定产蛋性能、蛋品质、血浆生殖激素水平，用RT-PCR技术检测蛋品质相关基因表达。【结果】与对照组相比，试验1～30、31～60和1～120 d，复方1组产蛋率分别增加7.56%、4.00%和5.31%(P<0.05)；试验1～120 d，复方2组产蛋率增加5.22%(P<0.05)；试验第60天，复方1组血浆雌二醇水平、输卵管PMCA1的mRNA相对表达量分别增加21.45%和77.00%(P <0.05)，复方2组输卵管KC...

Effects of compound Chinese medicine ultrafine powders on egg production, reproductive hormone, and related gene expression in laying hens

Objective This study was aimed to determine the effect of compound Chinese medicine ultrafine powders on egg laying performance, reproductive hormone, and related gene expression in laying hens.Method A total of 216 Xinyang black-feather laying hens (307-day-old) were selected and randomly divided into three groups with eight replicates in each group and nine in each replicate. The control group was fed the basal diet, and the experimental groups were fed basal diets supplemented with 0.5% Salvia miltiorrhiza (SM) + 0.25% Ligustrum lucidum (LL) + 0.25% Taraxacum mongolicum (TM)(compound 1), and 0.3% Leonurus japonicus (LJ) + 0.2% SM + 0.25% LL + 0.25% TM (compound 2) ultrafine powders, respectively. The pre-trial period was seven days, and the formal trial period was 120 days. Egg production performance, egg quality, and plasma reproductive hormone level were determined. The expressions of genes related to egg quality were detected by RT-PCR technology.Result Compared with the control group, during days 1-30, 31-60, and 1-120 of the trial, the egg laying rates of the compound 1 group increased by 7.56%, 4.00%, and 5.31% (P<0.05), respectively, and during 1-120 days the egg laying rate of the compound 2 group increased by 5.22% (P<0.05). On day 60 after treatment the plasma estradiol level and relative expression of oviduct PMCA1 mRNA increased by 21.45% and 77.00% (P<0.05), respectively, in the compound 1 group, and the relative expression of oviduct KCNA1 mRNA increased by 70.00% (P<0.05) in the compound 2 group. On day 90, the thickness of the eggshells increased by 12.12% and 9.09% (P<0.05), respectively, in the compound 1 and 2 groups. On day 120, the relative expressions of oviduct CA2 mRNA increased by 86.00% and 66.00% (P<0.05), respectively, in the compound 1 and 2 groups, and the relative expressions of oviduct CDH6, KCNA1 and SLC26A9 mRNA increased by 99.00%, 86.00% and 99.00% (P<0.05), respectively, in the compound 2 group.Conclusion Dietary supplementation with compound Chinese medicine ultrafine powders consisting of LJ, SM, LL, and TM could increase the egg production rate, improve egg quality of laying hen, increase the level of reproductive hormone, and up-regulate mRNA expressions of genes associated with eggshell formation. In addition, compound 1 presents the better effect.